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 257 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. Elizabeth Sibilsky Enselman, ATCAthletic Trainer1699915876
  2. Malcolm Sickels, MDFamily Medicine Physician1841392354
  3. Adam Siddiqui, PA-CPhysician Assistant1952975724
  4. Asma Siddiqui, MDFamily Medicine Physician1871517516
  5. Madiha Naqsh Siddiqui, MDInternal Medicine Physician1053940197
  6. Mariam Siddiqui, BDS, MSOrofacial Pain Dentistry1912585126
  7. Razia Siddiqui, PH.DClinical Psychologist1093964777
  8. Gurkanwal Sidhu, M.D.Student in an Organized Health Care Education/Training Program1598184665
  9. Vickie Sidon, RNPeritoneal Dialysis Registered Nurse1245505106
  10. Christopher Sidwell, MDCardiovascular Disease Physician1033855382
  11. Lauren SiebenalerNurse Practitioner1497363287
  12. Ronald Siebenaler, MD, PHDStudent in an Organized Health Care Education/Training Program1821734187
  13. Daniel Siebenaller, PA-CPhysician Assistant1730735895
  14. Jean Siedel, D.O.Gynecologic Oncology Physician1134448657
  15. Charles Siedlecki, MDInternal Medicine Physician1588023113
  16. Andrea Sieg, MSWSocial Worker1487099297
  17. Geoffrey Siegel, MDOrthopaedic Surgery Physician1295963916
  18. Christine Siegert, RRTRegistered Respiratory Therapist1316183692
  19. Martha Siegmund, RDNRegistered Dietitian1932070984
  20. Georgiana Siehl, MA, CCC-SLPSpeech-Language Pathologist1073830329
  21. Alan Sielaff, M.D.Emergency Medicine Physician1679837801
  22. Kurt Sieloff, MDNeurology Physician1700222650
  23. Rachel Sienko, PHDClinical Psychologist1134617731
  24. Andres SierraaltaGeneral Practice Dentistry1790188274
  25. Maxwell SieversStudent in an Organized Health Care Education/Training Program1518642313
  26. Karen Sievert, PTPhysical Therapist1982821427
  27. Marilyn Sievert, MS, LLPClinical Psychologist1932688983
  28. Catherine Siew, DONeonatal-Perinatal Medicine Physician1992333496
  29. Ali Siewert, PSY.D.Clinical Psychologist1265138994
  30. Claudia SiewertProfessional Counselor1518536481
  31. Frederik Siewertsz Van Reesema, LLMSWClinical Social Worker1871063636
  32. Brian Sifrig, DOVascular & Interventional Radiology Physician1801244587
  33. Jose Sifuentes Cervantes, DDSOral and Maxillofacial Surgery (Dentist)1811553308
  34. Matthew Sigakis, M.D.Anesthesiology Physician1487881975
  35. Shannon Siira, MS, AT, ATCAthletic Trainer1881168409
  36. Athina Sikavitsas, DOPediatric Emergency Medicine (Pediatrics) Physician1275618241
  37. Rachel SikkemaSocial Worker1750700944
  38. Miriam SikoraStudent in an Organized Health Care Education/Training Program1275098048
  39. Adina Silber, OTR/LOccupational Therapist1306363809
  40. Robert Silbergleit, MDEmergency Medicine Physician1245260249
  41. Andrew SilerPharmacist1831441229
  42. Melody Sills Butt, M.A., CCC-SLPSpeech-Language Pathologist1700191756
  43. Amber Silva, LLMSWClinical Social Worker1437914579
  44. Anne Silva, NPNurse Practitioner1720455561
  45. Maria Silveira, MDHospice and Palliative Medicine (Internal Medicine) Physician1689751471
  46. Sara Silvennoinen, LPCProfessional Counselor1740315381
  47. Alexander Silver, MDClinical Pathology Physician1538954359
  48. Andrea SilvermanBehavior Technician1205509015
  49. Brittany Silverman, MDPediatric Endocrinology Physician1114675568
  50. Elizabeth Silverman, MDEmergency Medicine Physician1760112007

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.