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John Ryan, M.D.
NPI 1487016622 · Pediatrics Physician · Portsmouth, NH
John Ryan, M.D. is a Pediatrics Physician provider in Portsmouth, NH (NPI 1487016622).
Provider details
- NPI number
- 1487016622
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 21475 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(72/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
330 Borthwick Ave Ste 101
Portsmouth, NH 03801-4102
Phone: (603) 436-7171
Street-level locationGet directions
Mailing address
330 Borthwick Ave Ste 101
Portsmouth, NH 03801-4102
Registry dates
- Enumerated
- 2016-03-27
- Last updated
- 2021-07-30
- Certified
- 2021-07-30
Frequently asked questions
- What is John Ryan's NPI number?
- John Ryan's National Provider Identifier (NPI) is 1487016622, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ryan's specialty?
- John Ryan is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is John Ryan located?
- John Ryan's practice location on file with NPPES is 330 Borthwick Ave Ste 101, Portsmouth, NH 03801-4102.
- What is John Ryan's phone number?
- The practice phone number listed in the NPPES registry for John Ryan is (603) 436-7171.
- Is John Ryan's NPI active?
- Yes — John Ryan's NPI (1487016622) is active in the NPPES registry as of the last update on 2021-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.