Doctors and health care providers in Marietta, OH
1,141 individual NPPES records list a practice address in Marietta, 47th of 711 Ohio cities. The largest group is addiction (substance use disorder) counselor: 91, 8% of the city's records, against 3% across Ohio. Page 16 of 23.
The 8 largest groups in Marietta
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Marietta in Ohio
- Rank in Ohio47th of 711 cities by records
- Share of the state0.4% of Ohio's records
- Specialties present25 or more taxonomy codes
- Top three groups20.3% of all records
Compared with Ohio as a whole, Marietta has 5.3× the state's share of emergency medicine physician records and 0.37× its share of home health aide records.
Providers in Marietta, alphabetically
- Jane Niswonger, CFNPNurse Practitioner1356425565
- Andre NixonCertified Registered Nurse Anesthetist1295477818
- Wolfgang Nnchiiffor, MDAnesthesiology Physician1215432844
- Carly Nolan, RNRegistered Nurse1548939382
- Shelly Noll, LPTAPhysical Therapy Assistant1669355772
- Reagan Norgan, M.D.Family Medicine Physician1487877999
- Glenn Norosky, BSPharmacist1275832859
- Stephen Novicki, PHARM.D, RPHPharmacist1477135424
- Briana NunnCommunity Health Worker1801508338
- Garrett NunnPeer Specialist1235758319
- Virginia O'Connor, MACCC-SLPSpeech-Language Pathologist1518182690
- Constance Oates, FNPNurse Practitioner1013956945
- Gary Oates, MDEmergency Medicine Physician1518169986
- Hallie ObliskAddiction (Substance Use Disorder) Counselor1477351021
- Karl Ohly, DOPediatrics Physician1851322358
- Brady OhrnCase Manager/Care Coordinator1982228326
- Barbara Oliver, CDCAAddiction (Substance Use Disorder) Counselor1083065353
- Alexandra Olson, DPTPhysical Therapist1578312138
- Ornella Oluwole, MDAnesthesiology Physician1487279220
- Darla Ondreko, D.O.Internal Medicine Physician1982609020
- Clint Oommen, M.D.Cardiovascular Disease Physician1548588775
- Sherrie Padden, CRNAAnesthesiology Physician1659368587
- Elaine PadmanGeneral Practice Registered Nurse1659203180
- Rachael Pahl, PTAPhysical Therapy Assistant1912337049
- Alexis Palazzo, M.S., OTR/LOccupational Therapist1013890680
- Mallory Palmer, CRNACertified Registered Nurse Anesthetist1609278688
- Sarah Palmer, DDSStudent in an Organized Health Care Education/Training Program1861125072
- Hanzara Panol, DMDGeneral Practice Dentistry1417473885
- Omar Panol, DMDGeneral Practice Dentistry1144841701
- Alyssa ParkerAddiction (Substance Use Disorder) Counselor1598330268
- Lucas Parks, CDCAAddiction (Substance Use Disorder) Counselor1528817905
- Jennifer ParsonsCase Manager/Care Coordinator1194286708
- Jessica ParsonsPeer Specialist1548120918
- Anil Patel, M.D.Anesthesiology Physician1568459949
- Shinoj Pattali Jayavalsan, M.DHematology & Oncology Physician1275849788
- Austin Patterson, DOSports Medicine (Family Medicine) Physician1972123222
- Monica Paxton, RPHPharmacist1437449899
- Gharanai Payind, MDHospitalist Physician1184702581
- Matthew Peck, MDEmergency Medicine Physician1376006338
- Brian Peppel, PAPhysician Assistant1487021200
- Brittany Peppel, PA-CMedical Physician Assistant1811247927
- Andrew PernaCommunity Health Worker1386418424
- Alaina Perry, D.M.D.Dentist1235473331
- Matthew PerryFamily Nurse Practitioner1053041822
- Sajid Pervaiz, M.D.Family Medicine Physician1518133776
- Clare Petty, APRN, BCFamily Nurse Practitioner1366622185
- Dallas Phelps, MSW ICSWClinical Social Worker1790954493
- Drew Phillips, DOOtolaryngology Physician1093343915
- Jane PhillipsAddiction (Substance Use Disorder) Counselor1437005204
- Matthew PhillipsEmergency Medicine Physician1538622584
The largest Ohio cities
- Columbus36,491
- Cincinnati31,362
- Cleveland30,748
- Toledo13,583
- Dayton12,431
How to read this directory
Marietta, Ohio appears in the CMS National Plan and Provider Enumeration System with 1,141 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 Marietta - 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 Marietta 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 Marietta is weighted toward Addiction (Substance Use Disorder) Counselor (91 clinicians, followed by Physician Assistant with 73 and Case Manager/Care Coordinator with 68). 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, Marietta reports roughly 9.7 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, Mental Health Counselor is the most prominent one with no provider currently listing a Marietta practice address, a coverage gap Marietta patients typically fill by traveling to a larger nearby hub.
For Marietta 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 Marietta, OH?
There are 1,141 registered healthcare providers in Marietta, OH, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Marietta?
The most common specialties in Marietta are Addiction (Substance Use Disorder) Counselor, Physician Assistant, Case Manager/Care Coordinator, Emergency Medicine Physician, Family Nurse Practitioner. Addiction (Substance Use Disorder) Counselor has the most providers with 91.
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.