NPPES file of Aug 9, 2026

Doctors and health care providers in Ann Arbor, MI

15,616 individual NPPES records list a practice address in Ann Arbor, 4th of 515 Michigan cities. The largest group is clinical social worker: 1,236, 8% of the city's records, against 6% across Michigan. Page 103 of 313.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Ann Arbor

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Ann Arbor in Michigan

  • Rank in Michigan4th of 515 cities by records
  • Share of the state5.5% of Michigan's records
  • Specialties present25 or more taxonomy codes
  • Top three groups22.1% of all records
  • Clinical Social Worker rank3rd of the 10 Michigan cities with the most

Compared with Michigan as a whole, Ann Arbor has 4.2× the state's share of anesthesiology physician records and 0.29× its share of behavior technician records.

Providers in Ann Arbor, alphabetically

  1. Mary Gregory, PAPhysician Assistant1649302464
  2. Anet GreibStudent in an Organized Health Care Education/Training Program1629713599
  3. Andrew Greifer, PH.D., M.S.W.Clinical Social Worker1780825802
  4. Lindsey GreigRegistered Nurse1275467672
  5. Emma Greimann, MDAllergy & Immunology Physician1528704384
  6. Colin Greineder, MDEmergency Medicine Physician1679648232
  7. Mary Greiner, DOFamily Medicine Physician1467483024
  8. Allison Grekin, CNMAdvanced Practice Midwife1376003111
  9. Rebecca Grekin, PHDClinical Psychologist1982266607
  10. Rachael GrelockBehavior Technician1205302379
  11. Sonny Grendel, OTRGerontology Occupational Therapist1790254266
  12. Paul Grenier, O.D.Optometrist1386608081
  13. John Grenillo, DCChiropractor1023210358
  14. Nicole Grennell, FNP-CNurse Practitioner1699322909
  15. Alison GrenonClinical Psychologist1760210769
  16. Sara Greschuk, LMSWClinical Social Worker1164882817
  17. Veronica Greve, CGCGenetic Counselor (M.S.)1689247496
  18. Hannah Grewal, PA-SStudent in an Organized Health Care Education/Training Program1245003326
  19. Harneet Grewal, BDS,DDSPediatric Dentistry1730520214
  20. Rinko Grewal, DOInternal Medicine Physician1659995777
  21. Dina Griauzde, MDInternal Medicine Physician1194018028
  22. William Gribbin, MDStudent in an Organized Health Care Education/Training Program1932840931
  23. Janice Grichor, RDRegistered Dietitian1972641512
  24. Anita Griffin, LMSW ACSW CAC1Clinical Social Worker1770601890
  25. Brandi Griffin, AUDAudiologist1235387887
  26. Bryce Griffin, MDStudent in an Organized Health Care Education/Training Program1902591407
  27. Kara Griffin, PA-CPhysician Assistant1568054187
  28. Andrea Griffith, NPNurse Practitioner1417386061
  29. Brian Griffith, MDStudent in an Organized Health Care Education/Training Program1881257681
  30. Diane Griffith, MSWSocial Worker1871628420
  31. Maryann Griffith, DDSDentist1881773471
  32. Robert GriffithSocial Worker1164897153
  33. Angela Griffiths, CRNACertified Registered Nurse Anesthetist1164401683
  34. Ronald Grifka, MDPediatric Cardiology Physician1386624666
  35. Wendy Grigg, CRNACertified Registered Nurse Anesthetist1265896492
  36. Jennifer Griggs, MD, MPHHematology (Internal Medicine) Physician1700949609
  37. Julia Grigorian, MDNeurological Surgery Physician1780318204
  38. David Grillo, MSWClinical Social Worker1275790354
  39. Jamie GrilloElectroneurodiagnostic Specialist/Technologist1750747549
  40. Lisa Grilly, MDAnesthesiology Physician1154538080
  41. Andrew Grim, MDPediatric Rheumatology Physician1952714875
  42. Connor Grimes, D.D.S.Student in an Organized Health Care Education/Training Program1790660892
  43. Jane Grimes, OTRLOccupational Therapist1649486275
  44. Katelyn Grimes, MS, ATCAthletic Trainer1285031336
  45. Spring Grimes, SW LBSWClinical Social Worker1275609695
  46. Cynthia Grimston, PA-CPhysician Assistant1467940817
  47. Sharon Grob, MSWMarriage & Family Therapist1467514307
  48. Nicole GrodeBehavior Technician1669005765
  49. Celia Groenhout, MDAnesthesiology Physician1083624696
  50. Suzanne Groff, FNPFamily Nurse Practitioner1932695608

The largest Michigan cities

  1. Farmington Hills36,305
  2. Detroit19,832
  3. Grand Rapids18,005
  4. Novi7,641
  5. Kalamazoo6,553

All of Michigan →

How to read this directory

Ann Arbor, Michigan appears in the CMS National Plan and Provider Enumeration System with 15,616 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Ann Arbor - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Ann Arbor practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Ann Arbor is weighted toward Clinical Social Worker (1,236 clinicians, followed by Student in an Organized Health Care Education/Training Program with 1,217 and Behavior Technician with 1,000). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Michigan's population, Ann Arbor reports roughly 155.6 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

Of Michigan's most common specialties, Family Nurse Practitioner is the most prominent one with no provider currently listing a Ann Arbor practice address, a coverage gap Ann Arbor patients typically fill by traveling to a larger nearby hub.

For Ann Arbor patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in Ann Arbor, MI?

There are 15,616 registered healthcare providers in Ann Arbor, MI, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Ann Arbor?

The most common specialties in Ann Arbor are Clinical Social Worker, Student in an Organized Health Care Education/Training Program, Behavior Technician, Nurse Practitioner, Physician Assistant. Clinical Social Worker has the most providers with 1,236.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.