NPPES file of Aug 9, 2026

Doctors and health care providers in New Haven, CT

9,793 individual NPPES records list a practice address in New Haven, 1st of 200 Connecticut cities. The largest group is students in training: 1,845, 19% of the city's records, against 6% across Connecticut. Page 133 of 196.

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

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in New Haven

  1. Students in training1,845
  2. Clinical Social Worker556
  3. Internal Medicine Physician329
  4. Psychiatry Physician285
  5. Pharmacist276
  6. Physician Assistant256
  7. Medical Physician Assistant248
  8. Family Nurse Practitioner239

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

New Haven in Connecticut

  • Rank in Connecticut1st of 200 cities by records
  • Share of the state11.6% of Connecticut's records
  • Specialties present25 or more taxonomy codes
  • Top three groups27.9% of all records
  • Students in training rank1st of the 10 Connecticut cities with the most

Compared with Connecticut as a whole, New Haven has 4.2× the state's share of pharmacist clinician (phc)/ clinical pharmacy specialist records and 0.36× its share of mental health counselor records.

Providers in New Haven, alphabetically

  1. Kristin Oliveira, M.D.Surgical Critical Care Physician1396983565
  2. Raissa Oliveira, PAMedical Physician Assistant1497483598
  3. Tadeu Oliveira, MDStudent in an Organized Health Care Education/Training Program1104762806
  4. Paul Oliver, PASurgical Physician Assistant1124132089
  5. Kathlyn Oliverio, MOT, OTR/LPediatric Occupational Therapist1134731565
  6. Benedicta Olonilua, MDStudent in an Organized Health Care Education/Training Program1144168584
  7. Gregory OlsenAnatomic Pathology & Clinical Pathology Physician1922460955
  8. Julianna Olsen, FNPFamily Nurse Practitioner1528859014
  9. Kristin Olsen, LADCAddiction (Substance Use Disorder) Counselor1801221577
  10. Douglas Olson, M.D.Internal Medicine Physician1972788792
  11. Kristine Olson, M.D.Hospitalist Physician1043372600
  12. Nancy Olson, M.D.Psychiatry Physician1003832049
  13. Adam Olszyk, LPCProfessional Counselor1184489478
  14. Reilly Oluanaigh, LPCAMental Health Counselor1457283111
  15. Mopeninujesu Oluyinka, MD,MPHStudent in an Organized Health Care Education/Training Program1194395616
  16. Shannon Omalley, MDPediatrics Physician1194255943
  17. Sacit Omay, M.D.Neurological Surgery Physician1275704207
  18. William Omdahl, PHARMDPharmacist1528722121
  19. Ariel OmiunuStudent in an Organized Health Care Education/Training Program1285371013
  20. Simon Onderi, M.DNeuroradiology Physician1871850438
  21. Emily Ong, MDCardiovascular Disease Physician1689028508
  22. Shawn Ong, M.D.Student in an Organized Health Care Education/Training Program1154778512
  23. Yewande Onodipe, DMD, MPHGeneral Practice Dentistry1356694533
  24. Maria Onofrio, PA-CSurgical Physician Assistant1760551741
  25. Trusenia Onofrio, LPCProfessional Counselor1821211061
  26. Fernando Onuchic, MDStudent in an Organized Health Care Education/Training Program1558006247
  27. Laura Onuchic, MDStudent in an Organized Health Care Education/Training Program1912695297
  28. Ifeyinwa Onyiuke, MDDiagnostic Radiology Physician1427055094
  29. Ireoluwatomiwa Opayemi, MDStudent in an Organized Health Care Education/Training Program1720874563
  30. Britany OpokuStudent in an Organized Health Care Education/Training Program1689224263
  31. Stephen Opoku, NURSE PRACTITIONERAdult Health Nurse Practitioner1396167086
  32. Adriana Oprea, M.D.Anesthesiology Physician1770622334
  33. Felipe Ordonez-Caro, DDSGeneral Practice Dentistry1972764124
  34. Zachary Orellana, PHARMDAmbulatory Care Pharmacist1225721095
  35. Amit Oren, PH.DPsychologist1497961817
  36. Dan Oren, M.D.Psychiatry Physician1841435153
  37. Ronald Orencia, APRNPsychiatric/Mental Health Nurse Practitioner1720868847
  38. Julia Oricchio, APRN, PMHNPPsychiatric/Mental Health Nurse Practitioner1205495785
  39. Cordelia OrillacStudent in an Organized Health Care Education/Training Program1376106856
  40. Jennifer Orlando, LCSWClinical Social Worker1710864749
  41. Michael Orlosky, M.D.Psychiatry Physician1689984171
  42. Martha Ormanoski, MD, MSCStudent in an Organized Health Care Education/Training Program1306690763
  43. Raymond Orosz, BSPharmacist1861778698
  44. Jesus OrozcoStudent in an Organized Health Care Education/Training Program1346095890
  45. Luis Orozco, CRNACertified Registered Nurse Anesthetist1144555087
  46. Katherine Orr, MDInternal Medicine Physician1285217422
  47. Barbara Orrok, M.D.Psychiatry Physician1639248404
  48. Maisie Orsillo, DOInternal Medicine Physician1083233639
  49. Marisol OrthPsychiatric/Mental Health Nurse Practitioner1528669181
  50. Leidy Ortiz, MDStudent in an Organized Health Care Education/Training Program1649021668

The largest Connecticut cities

  1. Hartford6,317
  2. Waterbury3,148
  3. Farmington2,993
  4. Bridgeport2,980
  5. Stamford2,774

All of Connecticut →

How to read this directory

New Haven, Connecticut appears in the CMS National Plan and Provider Enumeration System with 9,793 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 New Haven - 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 New Haven 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 New Haven is weighted toward Student in an Organized Health Care Education/Training Program (1,845 clinicians, followed by Clinical Social Worker with 556 and Internal Medicine Physician with 329). 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 Connecticut's population, New Haven reports roughly 270.7 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 Connecticut's most common specialties, Physical Therapist is the most prominent one with no provider currently listing a New Haven practice address, a coverage gap New Haven patients typically fill by traveling to a larger nearby hub.

For New Haven 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 New Haven, CT?

There are 9,793 registered healthcare providers in New Haven, CT, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in New Haven?

The most common specialties in New Haven are Student in an Organized Health Care Education/Training Program, Clinical Social Worker, Internal Medicine Physician, Psychiatry Physician, Pharmacist. Student in an Organized Health Care Education/Training Program has the most providers with 1,845.

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.