Barry Gendron, DO
NPI 1558441949 · Pain Medicine (Physical Medicine & Rehabilitation) Physician · Portsmouth, NH
Enrolled with Medicare as Practitioner - Physical Medicine and Rehabilitation · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Barry Gendron, DO is a Pain Medicine (Physical Medicine & Rehabilitation) Physician provider in Portsmouth, NH (NPI 1558441949).
Provider details
- NPI number
- 1558441949
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Physical Medicine & Rehabilitation) PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 8932 (NH)
Specialties & taxonomies
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
3 documented practice locations
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 · 1 distinct drug on file.
| Drug | Part D claims (2024) |
|---|---|
| Gabapentin | 13 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (2)
- 67 Corporate Dr Ste 200Portsmouth, NH 03801-2847Phone: (603) 431-5529
- 7 Marsh Brook Dr Ste 200Somersworth, NH 03878-6529Phone: (603) 742-4222
Registry dates
- Enumerated
- 2006-10-17
- Last updated
- 2024-03-07
- Certified
- 2024-03-07
Frequently asked questions
- What is Barry Gendron's NPI number?
- Barry Gendron's National Provider Identifier (NPI) is 1558441949, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Barry Gendron's specialty?
- Barry Gendron is listed in the NPPES registry with a primary specialty of Pain Medicine (Physical Medicine & Rehabilitation) Physician (Allopathic & Osteopathic Physicians).
- Where is Barry Gendron located?
- Barry Gendron's practice location on file with NPPES is 875 Greenland Rd, Portsmouth, NH 03801-4164.
- What is Barry Gendron's phone number?
- The practice phone number listed in the NPPES registry for Barry Gendron is (603) 431-5529.
- Does Barry Gendron accept Medicare?
- Barry Gendron is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Barry Gendron's NPI active?
- Yes — Barry Gendron's NPI (1558441949) is active in the NPPES registry as of the last update on 2024-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.