NPPES file of Aug 9, 2026

Doctors and health care providers in Old Greenwich, CT

161 individual NPPES records list a practice address in Old Greenwich, 79th of 200 Connecticut cities. The largest group is behavior technician: 20, 12% of the city's records, against 2% across Connecticut. Page 2 of 4.

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

The 8 largest groups in Old Greenwich

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

Old Greenwich in Connecticut

  • Rank in Connecticut79th of 200 cities by records
  • Share of the state0.2% of Connecticut's records
  • Specialties present25 or more taxonomy codes
  • Top three groups29.8% of all records

Compared with Connecticut as a whole, Old Greenwich has 5.5× the state's share of behavior technician records and 0.74× its share of clinical social worker records.

Providers in Old Greenwich, alphabetically

  1. Lucia Grady, OTR/LPediatric Occupational Therapist1881383560
  2. Alexa GrecoMental Health Counselor1437939147
  3. Kimberly Gronski, PTPhysical Therapist1265947139
  4. Daniel Guarini, RBTBehavior Analyst1083354443
  5. Cristina GuzmanOccupational Therapist1457042749
  6. Jamie HalcomRegistered Dietitian1053767657
  7. Mary Heaven, L.AC.Acupuncturist1073083622
  8. Jaydel HernandezBehavior Technician1235919002
  9. Victor HernandezPhysical Therapist1508647694
  10. Tania Hill, MSPediatric Occupational Therapist1215693114
  11. Lindsay HodgesBehavior Technician1023908795
  12. Sarah HoytBehavior Technician1033999743
  13. Elizabeth Hutchins, MSMental Health Counselor1588132195
  14. Juliana IppolitoSpeech-Language Pathologist1669248266
  15. Taya Jefferson, MPSArt Therapist1811471576
  16. Amy Kappelman, M.D.Pediatrics Physician1275733651
  17. Mary Karlan, LCSWSocial Worker1871976431
  18. Abigail KellyBehavior Technician1306550694
  19. Melanie Kelton, M.D.Internal Medicine Physician1083918577
  20. Natasha Khosla, M.D.Pediatrics Physician1689747842
  21. Nicholas KirkpatrickPhysical Therapist1659619294
  22. Jamie Klintberg, LCSWClinical Social Worker1396879797
  23. Christine Knorr, LCSWClinical Social Worker1699059816
  24. Arnold Korval, M.D.Pediatrics Physician1770656878
  25. Nancy Koury, MSWSocial Worker1366570830
  26. Elizabeth Krowitz, M.D.Pediatrics Physician1700959970
  27. Lisa Kurian, M.D.General Practice Physician1003876228
  28. Rosa LavouraPharmacist1457720005
  29. Inna Lazar, ODOptometrist1255713079
  30. Sarah LeaheySpeech-Language Pathologist1023344462
  31. Samantha LeichtnerBehavior Technician1346998929
  32. Allison LepontoisOccupational Therapist1932976156
  33. Madeleine LeroseBehavior Technician1174336580
  34. Leonard Leven, M.D.Child & Adolescent Psychiatry Physician1821098245
  35. Eileen Li, PT, DPT, L.ACAcupuncturist1295156610
  36. Courtney Liebowitz, PA-CPhysician Assistant1013454099
  37. Johnny Lin, PHARMDPharmacist1477211746
  38. Alison Lomazow, M.S., CCC-SLPSpeech-Language Pathologist1578800553
  39. Laurence Lorefice, M.D.Psychiatry Physician1609094549
  40. Mary Ellen Lorefice, MSW, LCSWClinical Social Worker1033345574
  41. Lauren Lukason, MT-BCMusic Therapist1841409463
  42. Joanna MackenzieMarriage & Family Therapist1740950633
  43. Amanda MackeyMental Health Counselor1649754334
  44. Kevin Makarewicz, LPCMental Health Counselor1487879250
  45. Edward Mamelok, LOOptician1588702559
  46. Suzette Mantaring-Harris, PTOrthopedic Physical Therapist1750684585
  47. Ranya MarjiehMental Health Counselor1700443652
  48. Jamie McRoberts Griffin, PTPhysical Therapist1205235181
  49. Jennifer Millman, MDPediatrics Physician1104243013
  50. Judith MosessoSocial Worker1023477064

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

Old Greenwich, Connecticut appears in the CMS National Plan and Provider Enumeration System with 161 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 Old Greenwich - 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 Old Greenwich 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 Old Greenwich is weighted toward Behavior Technician (20 clinicians, followed by Physical Therapist with 17 and Clinical Social Worker with 11). 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, Old Greenwich reports roughly 4.5 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, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Old Greenwich practice address, a coverage gap Old Greenwich patients typically fill by traveling to a larger nearby hub.

For Old Greenwich 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 Old Greenwich, CT?

There are 161 registered healthcare providers in Old Greenwich, CT, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Old Greenwich?

The most common specialties in Old Greenwich are Behavior Technician, Physical Therapist, Clinical Social Worker, Pediatrics Physician, Mental Health Counselor. Behavior Technician has the most providers with 20.

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.