Pediatric Gastroenterologists in Michigan
Data updated monthly · Last refresh October 2026
61 Pediatric Gastroenterology providers practice in Michigan. The largest concentration is in Ann Arbor. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
61providers
Ann Arbortop city
Pediatric Gastroenterology by city in Michigan
Choose a city to see providers there.
Where Pediatric Gastroenterologists in Michigan practice
From CMS Medicare enrollment records covering 18 of the 61 providers listed here (30%). Providers who do not bill Medicare are not included in these figures.
Largest practice groups
| Group (as registered with Medicare) | Pediatric Gastroenterologists | All clinicians in group | Main city |
| Regents of the University of Michigan | 8 | 3,344 | Ann Arbor |
| Spectrum Health Primary Care Partners | 2 | 2,283 | Grand Rapids |
| University Pediatricians | 2 | 121 | Detroit |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Pediatric Gastroenterology providers in Michigan
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Adam Cardullo, M.D.Ann Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4000 Dr. Alan Baldridge, M.D.Ann Arbor, MI · $41 in drug and device payments (2025) ·
(734) 773-3105 Dr. Alejandro Velez Lopez, MDAnn Arbor, MI · $28 in drug and device payments (2025) ·
(734) 936-4000 Dr. Alexander Lyons, DOAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4000 Dr. Andrew Singer, M.D.Ann Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4185 Dr. Anushree Algotar, MDAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4000 Dr. George Zacur, M.D., M.S.Ann Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4185 Dr. Grace Lee, MDAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4185 Dr. James Reed, MDAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4000 Dr. Jeremy Adler, MDAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4185 Dr. Jessica RutskyAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4000 Dr. John Decaro, MDAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 946-4717 Dr. Lindsey Lawrence, M.D.Ann Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4000 Dr. Macie Markello, DOAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4717 Dr. Mohannad AbusalemAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4717 Dr. Nicholas Litchin, MDAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 763-9650 Dr. Noah Kline, MDAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 647-5299 Dr. Pamela Brown, MDAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4000 Dr. Samantha Saul, M.D.Ann Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4000 Dr. Shuemein Mar, M.D.Ann Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4185 Dr. Thomas Larouere, MDAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4000 Dr. Wei-wei Lee, MDAnn Arbor, MI · No drug or device payments recorded (2025) ·
(734) 936-4000 Dr. Vasundhara Tolia, MBBSBloomfield Hills, MI · No drug or device payments recorded (2025) ·
(248) 647-3243 Dr. Hernando Lyons, MDDetroit, MI · $358 in drug and device payments (2025) ·
(313) 343-3481 Dr. Kristen Cares, M.D.Detroit, MI · $2,115 in drug and device payments (2025) ·
(313) 745-5427 Dr. Mohammad El-baba, MDDetroit, MI · $164 in drug and device payments (2025) ·
(313) 745-4045 Dr. Salman Salman, M.D.Detroit, MI · $212 in drug and device payments (2025) ·
(614) 722-3361 Dr. Sanjay Kumar, M.D.Detroit, MI · $188 in drug and device payments (2025) ·
(313) 343-3481 Dr. Seth Iskowitz, M.D.Detroit, MI · No drug or device payments recorded (2025) ·
(313) 916-2408 Dr. Suhasini Macha, MDDetroit, MI · $109 in drug and device payments (2025) ·
(313) 745-5585 Dr. Tony Lulgjuraj, M.D.Detroit, MI · No drug or device payments recorded (2025) ·
(313) 745-5585 Dr. Alexander Redman, MDGrand Rapids, MI · $70 in drug and device payments (2025) ·
(616) 267-2100 Dr. Amie Hinshaw, M.D.Grand Rapids, MI · $390 in drug and device payments (2025) ·
(616) 267-2100 Dr. Deborah Cloney, MDGrand Rapids, MI · $166 in drug and device payments (2025) ·
(616) 267-2100 Dr. Harold Conrad, MDGrand Rapids, MI · No drug or device payments recorded (2025) ·
(616) 267-2100 Dr. Kara Ashby, M.D., M.P.HGrand Rapids, MI · No drug or device payments recorded (2025) ·
(616) 267-2100 Dr. Miriam Vos, MD, MSPHGrand Rapids, MI · $4,404 in drug and device payments (2025) ·
(616) 267-4100 Dr. Ryan Cox, M.D.Grand Rapids, MI · $405 in drug and device payments (2025) ·
(616) 267-2100 Dr. Vanessa Cardenas Kimball, M.D.Grand Rapids, MI · $335 in drug and device payments (2025) ·
(616) 267-2100 Dr. Ashley Ross, MSN, CPNPKalamazoo, MI · $268 in drug and device payments (2025) ·
(269) 341-7784 Dr. Patrick Jones, M.D.Kalamazoo, MI · $246 in drug and device payments (2025) ·
(269) 341-7784 Dr. Russell Cameron, M.D.Kalamazoo, MI · $474 in drug and device payments (2025) ·
(269) 341-7784 Dr. Tanbeena Imam, M.D.Kalamazoo, MI · $82 in drug and device payments (2025) ·
(269) 341-7784 Dr. Safwan Malas, M.D.Lansing, MI · $963 in drug and device payments (2025) ·
(517) 364-5490 Dr. Janice Heikenen, MDMohawk, MI · No drug or device payments recorded (2025) ·
(906) 289-4316 Dr. Shamel Amin, M.D.Mt Pleasant, MI · No drug or device payments recorded (2025) ·
(989) 779-5270 Dr. Ayesha FatimaRoyal Oak, MI · No drug or device payments recorded (2025) ·
(248) 551-0311 Dr. Courtney RuschRoyal Oak, MI · No drug or device payments recorded (2025) ·
(248) 546-2110 Common questions
How many Pediatric Gastroenterology providers are in Michigan?There are 61 Pediatric Gastroenterology providers with active NPI records practicing in Michigan, according to federal NPPES data refreshed monthly.
Which cities in Michigan have the most Pediatric Gastroenterology providers?Ann Arbor (22), Royal Oak (11), Detroit (9) have the highest concentration of Pediatric Gastroenterology providers in Michigan.
How many Pediatric Gastroenterology providers in Michigan received drug or device company payments?28 of 61 Pediatric Gastroenterology providers in Michigan (46%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
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