Sympathetic nerve blocks

Ayah Zegar

Ayah Zegar, MD
Ayah Zegar
Ayah Zegar
MD
Specialties
Pain Medicine
National Provider Identifier
1487115523
Employment Status/Appointment
Assistant
Female
    1487115523 - 11544 - Endeavor Health Medical Group 1487115523 - 5507 - Endeavor Health Medical Group 1487115523 - 8305 - Endeavor Health Medical Group
Provider Status
Active
Accepting Patients
No
Employed
Yes
Open Scheduling
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Ayah Zegar, MD, a pain medicine and anesthesiology specialist at Endeavor Health, provides comprehensive care for patients managing chronic and acute pain. She addresses a wide range of conditions including abdominal pain, arthritic pain, facial pain and cancer-related pain. Dr. Zegar offers interventional treatments such as celiac plexus blocks, dorsal root ganglion stimulation and epidural steroid injections, tailoring therapies to each patient’s needs. Her expertise spans anesthesiology and advanced pain management techniques that improve quality of life.

Years Experience
7
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Paul Guillod

Paul Guillod, MD
Paul Guillod
Paul Guillod
MD
Specialties
Pain Medicine
National Provider Identifier
1215464383
Employment Status/Appointment
Attending
Male
    1215464383 - 11544 - Endeavor Health Medical Group 1215464383 - 30998 - Endeavor Health Medical Group 1215464383 - 31716 - Endeavor Health Medical Group 1215464383 - 6658 - Endeavor Health Medical Group 1215464383 - 8305 - Endeavor Health Medical Group
Provider Status
Active
Accepting Patients
No
Employed
Yes
Overall Rating
4.8
Total Ratings
40
Total Comments
17
Comments
[{"id":1757560424,"surveyKey":"10102189464","source":"PG Survey- MD","mentionTime":"2025-11-02T05:00:00Z","wordCount":53,"comment":"Dr Paul Guillod was recommended by [...] and because I totally respect him as a Dr I trusted his reccommendation. Dr Paul Guilliad has worked to get me in when needed and takes time with you as a patient. I will give his name to anyone who could use a good Dr.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1757560693,"surveyKey":"10089603384","source":"PG Survey- MD","mentionTime":"2025-11-01T05:00:00Z","wordCount":7,"comment":"Very knowledgeable, compassionate and communicative! Quite professional","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1739518922,"surveyKey":"9958864187","source":"PG Survey- MD","mentionTime":"2025-10-10T05:00:00Z","wordCount":23,"comment":"Dr. GUILLOD and his staff are highly competent and excellent listeners. They are thoughtful, careful and sensitive to the patient's pain and needs.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1722721449,"surveyKey":"9794648786","source":"PG Survey- MD","mentionTime":"2025-09-11T05:00:00Z","wordCount":14,"comment":"As is always the case, everyone I encountered was very kind, attentive and caring.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1722720918,"surveyKey":"9794657651","source":"PG Survey- MD","mentionTime":"2025-09-09T05:00:00Z","wordCount":19,"comment":"I was impressed with his ability to make a good evaluation of my condition and how would treat it","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706708894,"surveyKey":"9652030689","source":"PG Survey- MD","mentionTime":"2025-08-22T05:00:00Z","wordCount":4,"comment":"Gives full attention. Cares.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706707626,"surveyKey":"9652017257","source":"PG Survey- MD","mentionTime":"2025-08-17T05:00:00Z","wordCount":2,"comment":"Very good","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706698712,"surveyKey":"9408436414","source":"PG Survey- MD","mentionTime":"2025-07-10T05:00:00Z","wordCount":40,"comment":"Dr. Guillod has helped me to regain some quality of life. I have tremendous respect for him and his entire team. I highly recommend him to anyone having to deal with chronic pain while avoiding the pitfalls of drug dependency.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768132551,"surveyKey":"9283000601","source":"PG Survey- MD","mentionTime":"2025-06-13T05:00:00Z","wordCount":4,"comment":"Outstanding skill, empathy, efficiency.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768132769,"surveyKey":"9197533187","source":"PG Survey- MD","mentionTime":"2025-06-12T05:00:00Z","wordCount":57,"comment":"What can I sayDr. Guillod has been treating me for well over a year and I'm satisfied that he is doing everything possible for my painful arthritic condition. He's a good listener and takes the time to advise me.I expect to continue with him on a tri-monthly procedure basis which he recommended and helps the pain.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768136676,"surveyKey":"9197532062","source":"PG Survey- MD","mentionTime":"2025-05-30T05:00:00Z","wordCount":77,"comment":"My doctor actually is sent by the God like an angel. He heal me, give me medication which help me with the pain. I suffer with my pain for five years and finally, IMy doctor actually is sent by the god like an angel. He heal me, give me medication which help me with the pain. I suffer with my pain for five years and finally, I got relief which he gives me good medication.THANK YOU","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768139513,"surveyKey":"9121686690","source":"PG Survey- MD","mentionTime":"2025-05-17T05:00:00Z","wordCount":6,"comment":"Staff were kind, thorough and pleasant","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768149783,"surveyKey":"8818958371","source":"PG Survey- MD","mentionTime":"2025-04-04T05:00:00Z","wordCount":16,"comment":"Dr. Guillod took time to explain & discuss options & procedure.Personable.Like & would recommend.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768158941,"surveyKey":"8550449493","source":"PG Survey- MD","mentionTime":"2025-02-26T05:00:00Z","wordCount":14,"comment":"Clear discussion of issues and options in a kind manner==very pleasant to deal with","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768159847,"surveyKey":"8557336744","source":"PG Survey- MD","mentionTime":"2025-02-23T05:00:00Z","wordCount":126,"comment":"I have full confidence in Dr. Guillod and his Pain Team.I am grateful to Dr. Guillod and the team for their prompt response to questions and concerns.Their outstanding patience and politeness In dealing with all of us making appointments and waiting for pain treatment is remarkable. Dr. Guillod has my full trust. Dr. Guillod's calm demeanor, ability to communicate effectively, coupled with his experience Is second to no other doctor, I have personally experienced through the Endeavor Group. I have had the care of great doctors within the Endeavor system. Unfortunately,I have experienced a few I plan never to cross paths with again.Thank you for the good work you are doing. I have confidence you are working to weed out the problems.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768161402,"surveyKey":"8543207250","source":"PG Survey- MD","mentionTime":"2025-02-18T05:00:00Z","wordCount":27,"comment":"Paul is very patient, kind and thorough. He has helped me tremendously with my pain. Now I am feeling, better than I have in a long time.","ratings":[]},{"id":1768162535,"surveyKey":"8550463785","source":"PG Survey- MD","mentionTime":"2025-02-14T05:00:00Z","wordCount":2,"comment":"Great staff","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}}]

My endeavor is to be at the forefront of pain management so that I can offer patients the full gamut of treatment options that we have for them.

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I meet patients where they are, learn what ails them and use a multidisciplinary approach to help them find relief. I want patients to feel empowered and informed in terms of the services we offer, and to feel comfortable whether they’re receiving a new medication or undergoing a procedure. It’s important that they feel in charge of their own health.

Paul Guillod, MD, an anesthesiologist and pain medicine physician at Endeavor Health, cares for patients experiencing acute and chronic pain using a personalized, multidisciplinary approach. With a background in engineering and a deep interest in science, Dr. Guillod is especially focused on the role of neuromodulation and regenerative therapies in pain management. He values working closely with patients to identify the most effective treatment options for each individual.

Years Experience
9
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Nirav Shah

Nirav Shah, MD
Nirav Shah
Nirav Shah
MD
Specialties
Pain Medicine
National Provider Identifier
1306282439
Employment Status/Appointment
Attending
Male
    1306282439 - 11544 - Endeavor Health Medical Group 1306282439 - 30998 - Endeavor Health Medical Group 1306282439 - 31716 - Endeavor Health Medical Group 1306282439 - 5507 - Endeavor Health Medical Group 1306282439 - 6658 - Endeavor Health Medical Group 1306282439 - 8305 - Endeavor Health Medical Group
Provider Status
Active
Accepting Patients
No
Employed
Yes
Overall Rating
4.9
Total Ratings
45
Total Comments
12
Comments
[{"id":1739516283,"surveyKey":"10013695588","source":"PG Survey- MD","mentionTime":"2025-10-18T05:00:00Z","wordCount":5,"comment":"Dr Shah is absolute best!","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706710561,"surveyKey":"9692690478","source":"PG Survey- MD","mentionTime":"2025-08-30T05:00:00Z","wordCount":23,"comment":"Dr. Shah was thorough and kind during the examination and very good at communicating and explaining. He was of great help to me.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706710284,"surveyKey":"9692638986","source":"PG Survey- MD","mentionTime":"2025-08-29T05:00:00Z","wordCount":19,"comment":"I think he shows compassion and understanding for the patient. Although he is time conscious, I never feel rushed","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706707124,"surveyKey":"9639908854","source":"PG Survey- MD","mentionTime":"2025-08-15T05:00:00Z","wordCount":23,"comment":"Dr. Shah was a good listener, he explained everything thoroughly. If his medical expertise matches his bedside manner, I will be very happy.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706707157,"surveyKey":"9646287360","source":"PG Survey- MD","mentionTime":"2025-08-15T05:00:00Z","wordCount":4,"comment":"Dr. Shaw is great","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706704364,"surveyKey":"9576776686","source":"PG Survey- MD","mentionTime":"2025-08-04T05:00:00Z","wordCount":3,"comment":"He was excellent","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706702795,"surveyKey":"9551415954","source":"PG Survey- MD","mentionTime":"2025-07-29T05:00:00Z","wordCount":1,"comment":"Excellent","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768147661,"surveyKey":"8914994133","source":"PG Survey- MD","mentionTime":"2025-04-13T05:00:00Z","wordCount":20,"comment":"I was very impressed w Dr Shah. He listened so carefully and his plan of action makes so much sense.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768149072,"surveyKey":"8888061396","source":"PG Survey- MD","mentionTime":"2025-04-08T05:00:00Z","wordCount":18,"comment":"Dr. Shaw was great! He explained things in a calm and direct manner. He displayed the utmost professionalism.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768149727,"surveyKey":"8870949607","source":"PG Survey- MD","mentionTime":"2025-04-05T05:00:00Z","wordCount":19,"comment":"First time visit. Dr educated me on my condition. Felt he knew what he was talking about. Very helpful.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768153446,"surveyKey":"8729549967","source":"PG Survey- MD","mentionTime":"2025-03-19T05:00:00Z","wordCount":16,"comment":"This was prior to recent appointmentDr. Shah is very caring and accepted my apology to staff","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768165514,"surveyKey":"8477426802","source":"PG Survey- MD","mentionTime":"2025-02-04T05:00:00Z","wordCount":16,"comment":"The doctor was very thorough and answered my many questions . It was a very good visit.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":4}}]

My endeavor is to use cutting-edge science and evidence-based medicine to relieve acute and chronic pain and improve quality of life through integrated, team-based care.

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I use the latest and greatest evidence-based treatment techniques to improve my patients’ quality of life in a holistic sense. I strive to provide care that promotes overall wellness, minimizing the use of opioids and instead leveraging the most advanced technologies and multidisciplinary approaches to treat pain. Chronic and interventional pain management is so much more than medication—it’s about restoring function and wellbeing.

Professional Title

Nirav Shah, MD, a pain medicine specialist and anesthesiologist at Endeavor Health, integrates the latest evidence-based treatments to care for patients with acute and chronic pain. With expertise in interventional pain management, he focuses on improving quality of life through opioid-sparing strategies and multidisciplinary care. Dr. Shah also leverages advancements in neuromodulation and technology to provide personalized, long-term solutions.

Years Experience
13
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David Dickerson

David Dickerson, MD
David Dickerson
David Dickerson
MD
Specialties
Pain Medicine
National Provider Identifier
1548581226
Employment Status/Appointment
Attending
Male
    1548581226 - 11544 - Endeavor Health Medical Group 1548581226 - 31716 - Endeavor Health Medical Group 1548581226 - 5507 - Endeavor Health Medical Group 1548581226 - 6658 - Endeavor Health Medical Group 1548581226 - 8305 - Endeavor Health Medical Group
Provider Status
Active
Accepting Patients
No
Employed
Yes
Overall Rating
4.9
Total Ratings
62
Total Comments
25
Comments
[{"id":1768119433,"surveyKey":"10406646988","source":"PG Survey- MD","mentionTime":"2025-12-22T05:00:00Z","wordCount":46,"comment":"Dr Dickerson took the time to understand the complexity of my health condition, he was thorough, helpful and kind. It was clear he understood my condition and explained his thinking well. He had several suggestions for treatment. He and his office followed immediately on several things.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1739512961,"surveyKey":"10089610560","source":"PG Survey- MD","mentionTime":"2025-10-29T05:00:00Z","wordCount":40,"comment":"Dr. Dickerson is warm, funny, thoughtful. He explained the procedure in layman's terms. It was pain free & quick. All staff were similarly caring & patient with my questions. I'd rate them higher than a 5 if that were available.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1722722918,"surveyKey":"9801974877","source":"PG Survey- MD","mentionTime":"2025-09-17T05:00:00Z","wordCount":37,"comment":"Dr. Dickerson took time with us to make sure we understood the procedure and illustrated my problem on my MRI. Dr. D was very personable and visited me both before and after the procedure. Very pleased patient","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706707232,"surveyKey":"9652015770","source":"PG Survey- MD","mentionTime":"2025-08-16T05:00:00Z","wordCount":17,"comment":"I was listened to and I felt that he really cared about making the pain go away.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706697610,"surveyKey":"9414201982","source":"PG Survey- MD","mentionTime":"2025-07-04T05:00:00Z","wordCount":5,"comment":"Everything went well. Very informative","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1706697360,"surveyKey":"9394035828","source":"PG Survey- MD","mentionTime":"2025-07-03T05:00:00Z","wordCount":25,"comment":"He's one of the best doctors I have. I am impressed with his knowledge, skills and experience.I truly appreciate the care that I received.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768134311,"surveyKey":"9202861862","source":"PG Survey- MD","mentionTime":"2025-06-06T05:00:00Z","wordCount":17,"comment":"Dr.Dickerson is an excellent Dr. I'm so fortunate to have him as my Dr. Thank you.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768136674,"surveyKey":"9197543988","source":"PG Survey- MD","mentionTime":"2025-05-30T05:00:00Z","wordCount":5,"comment":"Compassionate and passionate, stellar clinician.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768136859,"surveyKey":"9197557346","source":"PG Survey- MD","mentionTime":"2025-05-29T05:00:00Z","wordCount":4,"comment":"All good no complaints!","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768137190,"surveyKey":"9145853489","source":"PG Survey- MD","mentionTime":"2025-05-27T05:00:00Z","wordCount":3,"comment":"Very impressive team","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768138272,"surveyKey":"9116081741","source":"PG Survey- MD","mentionTime":"2025-05-22T05:00:00Z","wordCount":18,"comment":"Dr. David Dickerson Is a sensitive and brilliant physician. Endeavor Is most fortunate to have on the staff.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768153836,"surveyKey":"8753560722","source":"PG Survey- MD","mentionTime":"2025-03-18T05:00:00Z","wordCount":7,"comment":"Everyone was professional, caring, understanding and friendly.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768156269,"surveyKey":"8684082178","source":"PG Survey- MD","mentionTime":"2025-03-07T05:00:00Z","wordCount":7,"comment":"Seemed very smart but talked very fast","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768157142,"surveyKey":"8619321343","source":"PG Survey- MD","mentionTime":"2025-03-04T05:00:00Z","wordCount":31,"comment":"Just moved from out of state to the Chicago area. My previous pain management doctor in California recommended Dr David Dickinson. I am very impressed with him and his entire staff.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768158037,"surveyKey":"8595863992","source":"PG Survey- MD","mentionTime":"2025-03-01T05:00:00Z","wordCount":13,"comment":"Dr. Dickerson is very knowledgeable and informative. He has an excellent bedside manner.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768160485,"surveyKey":"8595865969","source":"PG Survey- MD","mentionTime":"2025-02-21T05:00:00Z","wordCount":4,"comment":"He is very good","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768162884,"surveyKey":"8527473887","source":"PG Survey- MD","mentionTime":"2025-02-13T05:00:00Z","wordCount":41,"comment":"Dr Dickerson is OUTSTANDING! Not only is he the BEST of the Best he is compassionate, caring, professional and totally patient centered. Dr Dickerson goes ABOVE AND BEYOND to explain the procedure, he makes everything painless and comfortable. He is AWESOME.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768163175,"surveyKey":"8527471796","source":"PG Survey- MD","mentionTime":"2025-02-12T05:00:00Z","wordCount":15,"comment":"Dr Dickerson is an outstanding doctor. He was able to diagnose my pain problems immediately","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768164774,"surveyKey":"8477410892","source":"PG Survey- MD","mentionTime":"2025-02-06T05:00:00Z","wordCount":28,"comment":"The Doctor was excellent and took the time to discuss everything, He did not rush and was so informative. I really appreciated it . His nurse practicsoner alsowas excellent.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768165498,"surveyKey":"8477403065","source":"PG Survey- MD","mentionTime":"2025-02-04T05:00:00Z","wordCount":25,"comment":"Five years with Dr. David Dickerson as my pain medicine doctor providing exceptional care for various pain issues, has made my life much more comfortable.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768166289,"surveyKey":"8441402987","source":"PG Survey- MD","mentionTime":"2025-02-01T05:00:00Z","wordCount":25,"comment":"It was my first appointment and was only a consult. Will have treatment next week. I am hopeful that it will help with my pain.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768167673,"surveyKey":"8433365848","source":"PG Survey- MD","mentionTime":"2025-01-28T05:00:00Z","wordCount":19,"comment":"This dude really know his stuff. I believe he can help me, where others have not been able to.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768167784,"surveyKey":"8410706209","source":"PG Survey- MD","mentionTime":"2025-01-27T05:00:00Z","wordCount":48,"comment":"Dr Dickerson came prepared & patiently listened to my concerns. He made me feel like he was genuinely interested & cared about helping me. His kind and positive demeanor was comforting & reassuring. I will recommend him to family and friends. I'm so grateful to be his patient.","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768168217,"surveyKey":"8369845766","source":"PG Survey- MD","mentionTime":"2025-01-26T05:00:00Z","wordCount":1,"comment":"Excellent!","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}},{"id":1768169077,"surveyKey":"8380294785","source":"PG Survey- MD","mentionTime":"2025-01-23T05:00:00Z","wordCount":1,"comment":"Excellent","ratings":[],"overallRating":{"name":"Likelihood to recommend","value":5}}]

My endeavor is providing individualized, high-impact care for all of the members of our community.

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My treatment philosophy is to build systems that help us reach patients who need us most, using effective therapies delivered by integrated teams. Through timely diagnosis and treatment, we aim to reduce suffering and improve lives while ensuring every patient has access to the care they need.

Professional Title

David Dickerson, MD, an anesthesiologist and pain medicine specialist at Endeavor Health, provides individualized, evidence-based care for patients with complex pain conditions. With more than a decade of experience, he uses advanced technologies, including image-guided procedures and microelectrodes, to help patients reduce pain and improve function. Dr. Dickerson also leads efforts to improve opioid safety and expand access to non-opioid treatments across the health system.

Years Experience
18
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