Quick answers
- Does Mary Vaughn Greathouse accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Vaughn Greathouse accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mary Vaughn Greathouse see?
- In 2024, CMS data shows 324 Original Medicare patients and 341 services for Mary Vaughn Greathouse. This counts Original Medicare only and measures volume, not quality.
- What is Mary Vaughn Greathouse's NPI number?
- 1942240643. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mary Vaughn Greathouse, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 324 |
|---|---|
| Services billed to Medicare | 341 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)111 services
- Anesthesia for other procedure on large bowel using an endoscope (00811)105 services
- Anesthesia for exam of colon using an endoscope (00812)74 services
- Anesthesia for procedure on small and large bowel using an endoscope (00813)19 services
- Anesthesia for other procedure on neck area (1 year or older) (00320)13 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure71%
- Arthritis51%
- Anxiety34%
- Ischemic heart disease26%
- Diabetes24%
Hospitals where Mary Vaughn Greathouse works
Medicare's Facility Affiliation Data lists Mary Vaughn Greathouse at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Avita OntarioOntario, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 360365
- Bucyrus Community HospitalBucyrus, OH · Critical Access Hospital · Emergency services: listed by Medicare · CCN 361316
- Camden Clark Medical CenterParkersburg, WV · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 510058
Practice locations
Addresses where Mary Vaughn Greathouse is enrolled with Medicare (CMS data updated October 2, 2026).
- 1001 Bellefontaine AveLima, OH 45804 (419) 998‑4575
- 1805 27th StPortsmouth, OH 45662 (740) 356‑8681
- 269 Portland Way SGalion, OH 44833 (419) 468‑4841
- 715 Richland MallOntario, OH 44906 (567) 307‑7557
- 800 Garfield AveParkersburg, WV 26101 (304) 424‑2111
Group practices
Medicare enrollment lists Mary Vaughn Greathouse as a member of these groups (CMS data updated October 2, 2026).
- Somc Medical Care Foundation, Inc.389 clinicians in the group
- Camden-Clark Physician Corporation348 clinicians in the group
- North Central Ohio Family Care Center Inc195 clinicians in the group
- Lima Memorial Professional Corporation165 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Ohio →
Other nurse anesthetists in Lima
Clinicians with the same Medicare primary specialty in Lima, OH — not a recommendation.
Other clinicians in Somc Medical Care Foundation, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942240643 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians