NPPES file of Aug 9, 2026

Doctors and health care providers in Derby, CT

453 individual NPPES records list a practice address in Derby, 47th of 200 Connecticut cities. The largest group is students in training: 74, 16% of the city's records, against 6% across Connecticut. Page 4 of 10.

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

Derby in Connecticut

  • Rank in Connecticut47th of 200 cities by records
  • Share of the state0.5% of Connecticut's records
  • Specialties present25 or more taxonomy codes
  • Top three groups36.9% of all records
  • Students in training rank10th of the 10 Connecticut cities with the most

Compared with Connecticut as a whole, Derby has 4.6× the state's share of surgical physician assistant records.

Providers in Derby, alphabetically

  1. Richard Gorman, LPCProfessional Counselor1851863294
  2. Amanda Graham, LMSWClinical Social Worker1588033997
  3. Carrie Gray, D.M.DDentist1619393972
  4. William Gray, M.D.Internal Medicine Physician1033402862
  5. Tiana GriffinMental Health Counselor1396521514
  6. Mark Grogan, MDInterventional Cardiology Physician1306909379
  7. Joseph Guarnaccia, M.D.Neurology Physician1235164427
  8. Julie Guilmette, LCSWClinical Social Worker1255582508
  9. Feng Guo, MDUrology Physician1336594399
  10. Patricia Haag, OTPediatric Occupational Therapist1255544078
  11. Maryann Hagberg, RD,CDNDietary Manager1851573687
  12. Dawn Hall, LPC-ACounselor1235916362
  13. Dwayne Hall, DNPNurse Practitioner1013624535
  14. Edward Halstead, M.D.Addiction Medicine (Psychiatry & Neurology) Physician1316967649
  15. Sana Hanif, M.DCardiovascular Disease Physician1841607397
  16. James Haswell, M.D.Anatomic Pathology & Clinical Pathology Physician1487792065
  17. Sarah HatahetStudent in an Organized Health Care Education/Training Program1447010970
  18. Alexander Hayden, PA-CSurgical Physician Assistant1336592013
  19. Thomas Heffernan, MSCounselor1053565762
  20. Bradley Herold, PA-CSurgical Physician Assistant1457658791
  21. Trudi Hewell, LMSWClinical Social Worker1922545391
  22. Arren Hill, DOStudent in an Organized Health Care Education/Training Program1770386682
  23. Chelsea Hinchey, APRN, PMHPsychiatric/Mental Health Nurse Practitioner1891115754
  24. Sheena Hines, L.P.C.Mental Health Counselor1346772845
  25. Saul Hochman, DCChiropractor1497846539
  26. Russell Holliday, DOEmergency Medicine Physician1598884900
  27. Samantha Holzman, PA-CPhysician Assistant1336571165
  28. Melina Hosseiny, MDStudent in an Organized Health Care Education/Training Program1750960258
  29. Linda Hricz-Borges, PA-CPhysician Assistant1528016755
  30. Robert Hyde, MDInternal Medicine Physician1902011885
  31. Rhianon Iassogna-Roman, APRN, RNFamily Nurse Practitioner1457422057
  32. Peter Integlia, CRNACertified Registered Nurse Anesthetist1013943430
  33. Ashley Jackson, LCSWClinical Social Worker1790091544
  34. Don-Andre JacksonRheumatology Physician1508250952
  35. Megan Jackson, LMSWClinical Social Worker1790223378
  36. Osman JafferInterventional Cardiology Physician1730446329
  37. Hassam Jaffry, MDInternal Medicine Physician1992332324
  38. Deepali Jain, MDSurgery Physician1013203082
  39. Sanjay Jaiswal, M.D.Hospitalist Physician1184319790
  40. Shivani Jani, MDInternal Medicine Physician1396521951
  41. Muhammad Huzaifa Javaid, MDStudent in an Organized Health Care Education/Training Program1033964119
  42. Kevin Jon, MDStudent in an Organized Health Care Education/Training Program1154024594
  43. Kaitlynn Jones, PA-CMedical Physician Assistant1619392370
  44. Sarah Jones, LPCProfessional Counselor1881369718
  45. Angela JulianPsychiatric/Mental Health Nurse Practitioner1528441805
  46. Sabin K C, M.DStudent in an Organized Health Care Education/Training Program1780436022
  47. Tamara Kaliszewski, P.A..Physician Assistant1316987621
  48. Lauren Karamavros, R.D.Registered Dietitian1477084069
  49. Faith Kasor, PROVIDERSocial Worker1972764769
  50. David Katz, MDInternal Medicine Physician1528138435

The largest Connecticut cities

  1. New Haven9,793
  2. Hartford6,317
  3. Waterbury3,148
  4. Farmington2,993
  5. Bridgeport2,980

All of Connecticut →

How to read this directory

Derby, Connecticut appears in the CMS National Plan and Provider Enumeration System with 453 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 Derby - 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 Derby 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 Derby is weighted toward Student in an Organized Health Care Education/Training Program (74 clinicians, followed by Internal Medicine Physician with 47 and Clinical Social Worker with 46). 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, Derby reports roughly 12.5 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, Marriage & Family Therapist is the most prominent one with no provider currently listing a Derby practice address, a coverage gap Derby patients typically fill by traveling to a larger nearby hub.

For Derby 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 Derby, CT?

There are 453 registered healthcare providers in Derby, CT, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Derby?

The most common specialties in Derby are Student in an Organized Health Care Education/Training Program, Internal Medicine Physician, Clinical Social Worker, Surgical Physician Assistant, Physician Assistant. Student in an Organized Health Care Education/Training Program has the most providers with 74.

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.