NPPES file of Aug 9, 2026

Doctors and health care providers in Troy, MI

3,809 individual NPPES records list a practice address in Troy, 14th of 515 Michigan cities. The largest group is behavior technician: 462, 12% of the city's records, against 22% across Michigan. Page 50 of 77.

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

The 8 largest groups in Troy

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

Troy in Michigan

  • Rank in Michigan14th of 515 cities by records
  • Share of the state1.3% of Michigan's records
  • Specialties present25 or more taxonomy codes
  • Top three groups24.5% of all records

Compared with Michigan as a whole, Troy has 2.5× the state's share of physician assistant records and 0.55× its share of behavior technician records.

Providers in Troy, alphabetically

  1. Marcy NgHome Health Aide1821858671
  2. Leynna Nguyen, RBT 16-24847Behavior Technician1205327509
  3. Tony Nguyen, M.D.Internal Medicine Physician1396741567
  4. Catherine Nichols, NPNurse Practitioner1770565632
  5. Matthew Nickel, LLPPsychologist1679357032
  6. Paul Nickola, ODOptometrist1689880395
  7. Alicya NiecalekMassage Therapist1770075707
  8. Monika NiemasikPsychologist1598318636
  9. Tracy NiemiLicensed Practical Nurse1497323513
  10. Dana Nierman, PTAPhysical Therapy Assistant1023964251
  11. Corey NierzwickBehavior Technician1063210755
  12. Kanon NishijimaBehavior Technician1831946599
  13. Deanna NobouphasavanhSocial Worker1861101552
  14. Laura Nolan, PAPhysician Assistant1376738864
  15. Renee Noomie, DCChiropractor1871515833
  16. Nayantara NooraniSpeech-Language Pathologist1316742257
  17. Eric Nordquist, MA, LPC, NCCProfessional Counselor1669565727
  18. Ashley Nordstrom, M.S., PA-CPhysician Assistant1861279754
  19. Adam Norman, PTAPhysical Therapy Assistant1891295648
  20. Matthew NormanCertified Registered Nurse Anesthetist1043198732
  21. Kurt NorrisBehavior Technician1578276226
  22. Shailyn NorriseBehavior Technician1740153683
  23. Joelle NorthCase Manager/Care Coordinator1881559870
  24. Kathleen Norton, MDInternal Medicine Physician1215915087
  25. Earlexia Norwood, M.D.Family Medicine Physician1225102734
  26. Renee NoteboomBehavior Technician1063112803
  27. Jennifer NovakMassage Therapist1417273566
  28. Kelsey NovakSocial Worker1295499804
  29. Patricia NovakAnatomic Pathology & Clinical Pathology Physician1750342945
  30. Emily Nowicki, M.D.Pediatrics Physician1699201251
  31. Gregory Nowinski, MDOrthopaedic Surgery Physician1205826427
  32. James Nugent, PTPhysical Therapist1225087927
  33. Jennifer Nugent, PTPhysical Therapist1215988662
  34. Kevin Nurmi, MDInternal Medicine Physician1942261938
  35. Michael NuttPhysician Assistant1538137138
  36. Ifechide Nwabueze, DMDPediatric Dentistry1043591472
  37. Danielle NykanenBehavior Technician1760258461
  38. Amy O'BrienBehavior Analyst1184034233
  39. Daniel O'Brien, D.D.S.General Practice Dentistry1154300804
  40. Knute O'Brien, PAPhysician Assistant1407537517
  41. John O'ConnorAcute Care Nurse Practitioner1447832316
  42. Devon O'Connor-Kutz, PA-CPhysician Assistant1033150727
  43. Amanda O'Dell, NPNurse Practitioner1740637602
  44. Erin O'Dowd, CPNPPediatric Adolescent Medicine Physician1922576214
  45. Cynthia O'Flynn, ME.D, ATR-BC, CTSArt Therapist1841365350
  46. Neala O'Hara, TLLPCounseling Psychologist1033631122
  47. Daniel O'Neil, M.A.Athletic Trainer1073636924
  48. Ann O'Neill, LPCProfessional Counselor1891340626
  49. Kristen O'Neill, OTRL, RYTOccupational Therapist1881195758
  50. Ellen O'Niel, DDSDentist1801180336

The largest Michigan cities

  1. Farmington Hills36,305
  2. Detroit19,832
  3. Grand Rapids18,005
  4. Ann Arbor15,616
  5. Novi7,641

All of Michigan →

How to read this directory

Troy, Michigan appears in the CMS National Plan and Provider Enumeration System with 3,809 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 Troy - 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 Troy 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 Troy is weighted toward Behavior Technician (462 clinicians, followed by Physician Assistant with 237 and Physical Therapist with 235). 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, Troy reports roughly 37.9 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, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Troy practice address, a coverage gap Troy patients typically fill by traveling to a larger nearby hub.

For Troy 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 Troy, MI?

There are 3,809 registered healthcare providers in Troy, MI, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Troy?

The most common specialties in Troy are Behavior Technician, Physician Assistant, Physical Therapist, Clinical Social Worker, Family Nurse Practitioner. Behavior Technician has the most providers with 462.

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.