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 206 of 313.
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
- Alexandra Offerman, FNPFamily Nurse Practitioner1730588559
- Alexandra Ogando VelezStudent in an Organized Health Care Education/Training Program1881323319
- Emmanuel OgbonnaPsychiatric/Mental Health Registered Nurse1992685747
- Janet Oglemater, MA LLPSocial Worker1073657508
- Chyna OgletreeCase Manager/Care Coordinator1821782152
- Mikhail Ognenovski, MDNeurology Physician1851917009
- Vladimir Ognenovski, MDRheumatology Physician1831274349
- Susan Ogoe, PA-CPhysician Assistant1316034085
- Lola OgundipeBehavior Technician1003513623
- Oludotun Ogunsola, MDNeurological Surgery Physician1043839350
- Hoon OhStudent in an Organized Health Care Education/Training Program1467250175
- Seo Oh, DDSDentist1982085056
- Won-Suck Oh, DDSDentist1164647780
- Gracie Ohannasian, LMSWClinical Social Worker1255050787
- Dana Ohl, MDUrology Physician1912099375
- Linda Ohl, LMSWMental Health Counselor1619415619
- Sarah Ohm, CNMAdvanced Practice Midwife1689742892
- Michael Ohonbamu, LMSWClinical Social Worker1962061846
- Israel Ojalvo, MDOphthalmology Physician1972182160
- Cristina Ojeda, MSWClinical Social Worker1225581671
- Akinlolu Ojo, MBBS, PHD, MPHNephrology Physician1649352550
- Dorathy- Okafor, RNRegistered Nurse1750215836
- Lazarus Okammor, NPNurse Practitioner1366971558
- Oluwaferanmi Okanlami, M.D.Family Medicine Physician1912298084
- Uchenna OkereaforBehavior Technician1659252419
- Alyssa Okey, LLMSWClinical Social Worker1649533597
- Donna Okoli, MDEmergency Medicine Physician1205464088
- Julia Okuly, PTOrthopedic Physical Therapist1417459330
- Lewis Okun, PH.D.Clinical Psychologist1265581458
- Catalina Olano-Ayerbe, MDAnesthesiology Physician1689243107
- Ann OldaniClinical Social Worker1114887635
- Christine Oldenburg-McGee, PAPhysician Assistant1376706242
- Ann Oldendorf, MDUrology Physician1710079173
- Justin Oldham, MDPulmonary Disease Physician1447448444
- Julie Olechnowicz, MSN NP CNurse Practitioner1730151978
- Sean Olinger, MDSurgery Physician1619436573
- Rocio Oliva, MD, MSDermatology Physician1932802659
- Anthony OliveiraStudent in an Organized Health Care Education/Training Program1659138592
- Andrea Oliverio, MDNephrology Physician1982997813
- Antoinette OliverioRegistered Nurse1366775678
- Rebecca Olivier, MSW, LLMSWClinical Social Worker1275372757
- Melissa Olken, MD, PHDInternal Medicine Physician1265540611
- Layal OllaikPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1336975564
- Tanner OlmosBehavior Technician1144817057
- Pamela Olmstead, N.P.Family Nurse Practitioner1730286311
- Joseph Olofsson, PT, DPTPhysical Therapist1992206189
- Michael Olp, MD PHDAnatomic Pathology & Clinical Pathology Physician1467026716
- James Olsen, DDSGeneral Practice Dentistry1174526131
- Tracy Olsen, NPNurse Practitioner1558624858
- David Olson, MDPediatric Endocrinology Physician1831268283
The largest Michigan cities
- Farmington Hills36,305
- Detroit19,832
- Grand Rapids18,005
- Novi7,641
- Kalamazoo6,553
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.