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 9 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. Peter Stein, O.D.Optometrist1487661914
  2. Celeste StewartSocial Worker1740143478
  3. Nicholas Stroumbakis, PA-CSurgical Physician Assistant1871002147
  4. Deepak Subedi, M.D.Student in an Organized Health Care Education/Training Program1174465579
  5. Sirjana Subedi, M.D.Student in an Organized Health Care Education/Training Program1013769009
  6. Thanathip Suenghataiphorn, M.D.Student in an Organized Health Care Education/Training Program1679325906
  7. Debra Sullivan, PAMedical Physician Assistant1396836714
  8. Alecia Swaby GrierPsychiatric/Mental Health Nurse Practitioner1104689397
  9. Mark Taafel, PAMedical Physician Assistant1912923889
  10. Laura Tarini, RPHPharmacist1225499247
  11. Jennifer Taylor, M.D.Cardiovascular Disease Physician1700148962
  12. Pratima Thapa, MDStudent in an Organized Health Care Education/Training Program1962342709
  13. Mark Thimineur, MDInterventional Pain Medicine Physician1336180314
  14. Sudha Thiruvengadam, MDInternal Medicine Physician1639433832
  15. Olivia Thomas, PA-CPhysician Assistant1114757820
  16. Robert Thompson, P.T.Physical Therapist1770539959
  17. Jessica Thongparn, RDRegistered Dietitian1093305674
  18. Michael Tichy, D.M.D.General Practice Dentistry1598908428
  19. Amy Tinney, LCSWClinical Social Worker1063918571
  20. Joanna TorresCounselor1023980323
  21. Nicholas Totalo, DDSOral and Maxillofacial Surgery (Dentist)1669698411
  22. Daniel UnderhillPhysician Assistant1083251490
  23. Rabia Usman, M.DStudent in an Organized Health Care Education/Training Program1477016376
  24. Beth Vankeuren Maldonado, LCSWClinical Social Worker1346261153
  25. Nimeshayan Varatharajah, M.D.Student in an Organized Health Care Education/Training Program1811485758
  26. Edward Vergara, LOOptician1942315916
  27. Saumya VermaStudent in an Organized Health Care Education/Training Program1831038090
  28. Nadine Vidor, MDInternal Medicine Physician1477747962
  29. Jovana Vidovic, MDInternal Medicine Physician1922680909
  30. Christian Vitug, M.D.Student in an Organized Health Care Education/Training Program1154267045
  31. Deepika VunnamStudent in an Organized Health Care Education/Training Program1407601156
  32. Jody WagnerRegistered Dietitian1669860409
  33. Stephanie Wain, MDAnatomic Pathology & Clinical Pathology Physician1710027040
  34. Jackson Waldrip, DOStudent in an Organized Health Care Education/Training Program1184374704
  35. Lindsay WalkerProfessional Counselor1164114013
  36. Joyce Wamsele, M.DInternal Medicine Physician1407238165
  37. Longqian WangDentist1669086575
  38. Muhammad Waqar, M.D.Student in an Organized Health Care Education/Training Program1033964945
  39. Robert Wasnick, M.D.Hospitalist Physician1508057571
  40. Linda Weisheit, RPHPharmacist1508158411
  41. Ryan Weiss, PA-CMedical Physician Assistant1093417768
  42. Emily Wengertsman, MS, LPCProfessional Counselor1295378073
  43. Dorothea Wild, M.D.Internal Medicine Physician1912989187
  44. Jennifer Williams, PA-CSurgical Physician Assistant1659557643
  45. Banya Win, MDInternal Medicine Physician1043960206
  46. Nicole Wolf, PA-CSurgical Physician Assistant1932821345
  47. Abigail Wolff-France, LMFTMarriage & Family Therapist1154831394
  48. Lihong Xia, MDAnatomic Pathology & Clinical Pathology Physician1548482474
  49. Mark YerushalmiPharmacist1881919991
  50. Tiji Zehring, PAPhysician Assistant1346750692

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.