NPPES file of Aug 9, 2026

Doctors and health care providers in Mason, OH

1,495 individual NPPES records list a practice address in Mason, 33rd of 711 Ohio cities. The largest group is behavior technician: 205, 14% of the city's records, against 2% across Ohio. Page 7 of 30.

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

Mason in Ohio

  • Rank in Ohio33rd of 711 cities by records
  • Share of the state0.5% of Ohio's records
  • Specialties present25 or more taxonomy codes
  • Top three groups25.8% of all records

Compared with Ohio as a whole, Mason has 197.8× the state's share of electroneurodiagnostic specialist/technologist records and 0.39× its share of social worker records.

Providers in Mason, alphabetically

  1. Jensen De Nijs, RRTRegistered Respiratory Therapist1902774813
  2. Jennifer Dean, CNIMTechnician/Technologist1790263770
  3. David Dearworth, M.D. (AND R.PH)Internal Medicine Physician1669556890
  4. Leslie Deckter, M.D.Psychiatry Physician1447576301
  5. Cailah DefoorBehavior Technician1245926062
  6. Mary DefrankSpeech-Language Pathologist1124425533
  7. Jacqueline Dell, LPCCounselor1285248203
  8. Sharlene Demehri, D.D.SPeriodontics1720763535
  9. Connie Dengler-Brockway, LSWSocial Worker1417454026
  10. Kaela DennisBehavior Technician1912470071
  11. Tabitha DennisOther Specialist/Technologist1629920327
  12. Ryan Denome, DCChiropractor1063207173
  13. Isabella DessartElectroneurodiagnostic Specialist/Technologist1427942838
  14. Hima Devgan, PT, DPTPhysical Therapist1346924412
  15. Courtney DevlinElectroneurodiagnostic Specialist/Technologist1144998691
  16. Carol Dewald, MSNAdult Psychiatric/Mental Health Clinical Nurse Specialist1891793220
  17. Susan Dewitt-Jones, OTROccupational Therapist1598996332
  18. Dana DeyhleBehavior Technician1285252841
  19. Sunny DiangeloHomemaker1417607425
  20. Joshua DiazElectroneurodiagnostic Specialist/Technologist1962217612
  21. Hailey Dick, BCBABehavior Analyst1619541794
  22. Vivian DimeoBehavior Technician1700707908
  23. Jessica Ditommaso, MS, RD, LDRegistered Dietitian1336381086
  24. Tabitha DittmanBehavior Technician1467241364
  25. Jamee Diver, IBCLCLactation Consultant (Non-RN)1447622279
  26. Amanda Dixon, APRNFamily Nurse Practitioner1053883751
  27. Heather Dlugosz, MDPsychiatry Physician1811108111
  28. Haley Dobrzynski, LPCProfessional Counselor1710617667
  29. Anissa DobzyneckiOptician1982302675
  30. Kyla Doepel, MED, BCBA, COBA, LBABehavior Analyst1659887321
  31. Alyssa Donahue, O.D.Optometrist1497136873
  32. John Doscher, MDPediatrics Physician1598735318
  33. Linda Douglas, LICDC-CS, LISW-SSocial Worker1932112935
  34. Brett Dowdy, PSYDClinical Psychologist1003854712
  35. Brian Dowling, MDPsychiatry Physician1316956535
  36. Jane DowneyProfessional Counselor1811742422
  37. Macon Doyel, BSBehavior Technician1336758150
  38. Aaron DoyleBehavior Technician1437948304
  39. Ann Doyle, RBTBehavior Technician1003617820
  40. Amanda Dozier, PMHNPPsychiatric/Mental Health Nurse Practitioner1558156778
  41. Amy Drees, OTR/LOccupational Therapist1851861157
  42. Brandi Dressler, CRNACertified Registered Nurse Anesthetist1619115193
  43. Madisyn Driller, FNPFamily Nurse Practitioner1326967282
  44. Elizabeth Dritt, MA CCC-SLPSpeech-Language Pathologist1326329087
  45. Stephanie Duffey, PT, DPTPhysical Therapist1215467451
  46. Christina Dumont, M.D.Pediatrics Physician1740280106
  47. Melonie Duncan, ATCAthletic Trainer1205048758
  48. Twonneisha Dunson GibsonHomemaker1275418154
  49. Gretchen Dyer, D.C.Chiropractor1336295179
  50. Marissa Earls, LSWClinical Social Worker1689058596

The largest Ohio cities

  1. Columbus36,491
  2. Cincinnati31,362
  3. Cleveland30,748
  4. Toledo13,583
  5. Dayton12,431

All of Ohio →

How to read this directory

Mason, Ohio appears in the CMS National Plan and Provider Enumeration System with 1,495 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 Mason - 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 Mason 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 Mason is weighted toward Behavior Technician (205 clinicians, followed by Electroneurodiagnostic Specialist/Technologist with 120 and Pharmacist with 61). 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 Ohio's population, Mason reports roughly 12.7 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 Ohio's most common specialties, Case Manager/Care Coordinator is the most prominent one with no provider currently listing a Mason practice address, a coverage gap Mason patients typically fill by traveling to a larger nearby hub.

For Mason 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 Mason, OH?

There are 1,495 registered healthcare providers in Mason, OH, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Mason?

The most common specialties in Mason are Behavior Technician, Electroneurodiagnostic Specialist/Technologist, Pharmacist, Physical Therapist, Professional Counselor. Behavior Technician has the most providers with 205.

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.