NPPES file of Aug 9, 2026

Doctors and health care providers in Derry, NH

597 individual NPPES records list a practice address in Derry, 12th of 146 New Hampshire cities. The largest group is mental health counselor: 74, 12% of the city's records, against 7% across New Hampshire. Page 11 of 12.

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

The 8 largest groups in Derry

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

Derry in New Hampshire

  • Rank in New Hampshire12th of 146 cities by records
  • Share of the state1.8% of New Hampshire's records
  • Specialties present25 or more taxonomy codes
  • Top three groups22.3% of all records
  • Mental Health Counselor rank8th of the 10 New Hampshire cities with the most

Compared with New Hampshire as a whole, Derry has 18.3× the state's share of community health worker records and 0.57× its share of occupational therapist records.

Providers in Derry, alphabetically

  1. William Simons, DPMPodiatrist1427049485
  2. Colleen Skeirik, APRNFamily Medicine Physician1437813979
  3. Dane Slentz, M.D.Ophthalmology Physician1639580327
  4. Robin SlocombPharmacist1962781112
  5. Cynthia Smiddy, CNM-APRNAdvanced Practice Midwife1265250898
  6. Julie SmithOccupational Therapist1114315850
  7. Richard Smith, PTAPhysical Therapy Assistant1932708856
  8. Jonathan Sobel, MDSpecialist1467563973
  9. Paige SordeletBehavior Analyst1508645706
  10. Heather Souther, LCMHCMental Health Counselor1154374452
  11. Zachary Spigelman, MDHematology & Oncology Physician1063470011
  12. Gerald Spindel, MDOphthalmology Physician1750463162
  13. Ashley SpinelliClinical Social Worker1568288298
  14. Michael Stafford, CSASurgical Assistant1730788373
  15. Taryn StaplesClinical Social Worker1831535400
  16. Olga Stetsyuk, DOGlaucoma Specialist (Ophthalmology) Physician1689064719
  17. Robyn Stewart, DOFamily Medicine Physician1497741441
  18. Marjorie Stock, M.D.Sleep Medicine (Otolaryngology) Physician1518914209
  19. Seth StoddardPhysical Therapist1003122771
  20. Richard Straub, M.D.Orthopaedic Surgery Physician1861471393
  21. Brittany StringfellowCase Manager/Care Coordinator1386123412
  22. Alexia Strzalka, MDFamily Medicine Physician1457796633
  23. Brian Sullivan, DMDDentist1740859966
  24. Lauri Sullivan, BASpecialist1205041878
  25. Colleen Summers, APN-BCNurse Practitioner1184934978
  26. Ryan Sychterz, PA-CMedical Physician Assistant1518226661
  27. Jessica Szalowski, D.C.Chiropractor1336129766
  28. Philip Szalowski, D.C.Chiropractor1306893557
  29. Bernadette SzumieszMental Health Counselor1518125129
  30. Kimberly Talbot, RD LDNRegistered Dietitian1053750638
  31. Valerie TayPharmacist1134581879
  32. Colleen Taylor, APRNPrimary Care Nurse Practitioner1457642654
  33. Steven Taylor, MDGastroenterology Physician1134106990
  34. Kristen Thibodeau, PSYDClinical Psychologist1336734193
  35. Anne Thomassen, APRN,NP-CFamily Nurse Practitioner1144534298
  36. Heidi TobinMental Health Counselor1326351180
  37. Katelin Tolman, RNRegistered Nurse1629830476
  38. Brianna TrainorRegistered Dietitian1437939618
  39. Michelle Tran, RPHPharmacist1225752264
  40. Stephen Trask, RPHPharmacist1255715447
  41. Sarah Tremblay, APRN-FNPFamily Nurse Practitioner1023776333
  42. Charlotte Trenholm, MSW, LICSW, MLADCClinical Social Worker1215329131
  43. Alicia Triplett, MFTCase Manager/Care Coordinator1437576097
  44. Kristine Trontz, D.D.S.Pediatric Dentistry1538523808
  45. Alison Trow, PTPhysical Therapist1730108457
  46. Steven Tsistrakis, M.DGastroenterology Physician1992168389
  47. Lydia TuittMental Health Counselor1942742663
  48. Emily TullgrenMental Health Counselor1851646681
  49. Nicholas Tzavalas, M.D.Anesthesiology Physician1255319687
  50. Danielle UgasMental Health Counselor1154508000

The largest New Hampshire cities

  1. Manchester4,401
  2. Lebanon3,530
  3. Nashua3,140
  4. Concord3,103
  5. Portsmouth1,860

All of New Hampshire →

How to read this directory

Derry, New Hampshire appears in the CMS National Plan and Provider Enumeration System with 597 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 Derry - 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 Derry 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 Derry is weighted toward Mental Health Counselor (74 clinicians, followed by Family Nurse Practitioner with 33 and Pharmacist with 26). 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 New Hampshire's population, Derry reports roughly 42.6 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 New Hampshire's most common specialties, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Derry practice address, a coverage gap Derry patients typically fill by traveling to a larger nearby hub.

For Derry 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 Derry, NH?

There are 597 registered healthcare providers in Derry, NH, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Derry?

The most common specialties in Derry are Mental Health Counselor, Family Nurse Practitioner, Pharmacist, Physical Therapist, Family Medicine Physician. Mental Health Counselor 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.