Quick answers
- Does Bartholomew R. Clayton accept Medicare assignment?
- Yes. Medicare's clinician data says Bartholomew R. Clayton 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 Bartholomew R. Clayton see?
- In 2024, CMS data shows 21 Original Medicare patients and 22 services for Bartholomew R. Clayton. This counts Original Medicare only and measures volume, not quality.
- What is Bartholomew R. Clayton's NPI number?
- 1417998949. 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 Bartholomew R. Clayton, 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 | 21 |
|---|---|
| Services billed to Medicare | 22 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 82 |
Most frequent services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)15 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 blood pressure75%
- Chronic kidney disease67%
- High cholesterol57%
- Arthritis52%
- Atrial fibrillation52%
Hospitals where Bartholomew R. Clayton works
Medicare's Facility Affiliation Data lists Bartholomew R. Clayton 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.
- Mount Desert Island HospitalBar Harbor, ME · Critical Access Hospital · Emergency services: listed by Medicare · CCN 201304
Practice locations
Addresses where Bartholomew R. Clayton is enrolled with Medicare (CMS data updated October 2, 2026).
- 10 Wayman LnBar Harbor, ME 04609
Group practices
Medicare enrollment lists Bartholomew R. Clayton as a member of this group (CMS data updated October 2, 2026).
- Mount Desert Island Hospital65 clinicians in the group
Specialties
- Hospitalistprimary
Other hospitalists in Bar Harbor
Clinicians with the same Medicare primary specialty in Bar Harbor, ME — not a recommendation.
Other clinicians in Mount Desert Island Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Cincinnati College Of Medicine |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417998949 |
| 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