Margaret Koehm, MD
NPI 1255315545 · Family Medicine Physician · Nantucket, MA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Koehm, MD is a Family Medicine Physician provider in Nantucket, MA (NPI 1255315545).
Provider details
- NPI number
- 1255315545
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD213100 (RI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 106 | 26 |
| Metoprolol Succinate | 42 | 12 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 32 | — |
| Simvastatin | 32 | — |
| Gabapentin | 31 | — |
| Lisinopril | 30 | — |
| Amlodipine Besylate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-01
- Last updated
- 2018-01-16
Frequently asked questions
- What is Margaret Koehm's NPI number?
- Margaret Koehm's National Provider Identifier (NPI) is 1255315545, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Koehm's specialty?
- Margaret Koehm is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Koehm located?
- Margaret Koehm's practice location on file with NPPES is 57 Prospect St, Nantucket, MA 02554-2799.
- What is Margaret Koehm's phone number?
- The practice phone number listed in the NPPES registry for Margaret Koehm is (508) 325-9981.
- Does Margaret Koehm accept Medicare?
- Margaret Koehm is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Koehm's NPI active?
- Yes — Margaret Koehm's NPI (1255315545) is active in the NPPES registry as of the last update on 2018-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.