Michael Marshall, M.D.
NPI 1902906670 · Family Medicine Physician · Amherst, NH
Michael Marshall, M.D. is a Family Medicine Physician provider in Amherst, NH (NPI 1902906670).
Provider details
- NPI number
- 1902906670
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 9547 (NH)
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
19 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-23
- Last updated
- 2007-07-08
Frequently asked questions
- What is Michael Marshall's NPI number?
- Michael Marshall's National Provider Identifier (NPI) is 1902906670, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Marshall's specialty?
- Michael Marshall is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Marshall located?
- Michael Marshall's practice location on file with NPPES is 199 State Route 101, Amherst, NH 03031-1735.
- What is Michael Marshall's phone number?
- The practice phone number listed in the NPPES registry for Michael Marshall is (603) 672-0044.
- Is Michael Marshall's NPI active?
- Yes — Michael Marshall's NPI (1902906670) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.