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John Stark, MD
NPI 1710927769 · Family Medicine Physician · Portsmouth, NH
John Stark, MD is a Family Medicine Physician provider in Portsmouth, NH (NPI 1710927769).
Provider details
- NPI number
- 1710927769
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 9824 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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.
Practice location
161 Corporate Dr
Portsmouth, NH 03801-6825
Phone: (603) 431-5154
Fax: (603) 430-5033
Street-level locationGet directions
Mailing address
Po Box 9746
Portland, ME 04104-5040
Registry dates
- Enumerated
- 2006-06-07
- Last updated
- 2020-10-01
- Certified
- 2020-10-01
Frequently asked questions
- What is John Stark's NPI number?
- John Stark's National Provider Identifier (NPI) is 1710927769, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Stark's specialty?
- John Stark is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Stark located?
- John Stark's practice location on file with NPPES is 161 Corporate Dr, Portsmouth, NH 03801-6825.
- What is John Stark's phone number?
- The practice phone number listed in the NPPES registry for John Stark is (603) 431-5154.
- Is John Stark's NPI active?
- Yes — John Stark's NPI (1710927769) is active in the NPPES registry as of the last update on 2020-10-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.