Gregory Seymour, M.D.
NPI 1851316152 · Dermatology Physician · Keene, NH
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Seymour, M.D. is a Dermatology Physician provider in Keene, NH (NPI 1851316152).
Provider details
- NPI number
- 1851316152
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 10542 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,837 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 934 | $65 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 612 | $95 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 557 | $16 |
| Biopsy of Related Skin Growth, First Growth11102 | 414 | $33 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 357 | $2 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 129 | 86 |
| Doxycycline Hyclate | 88 | 24 |
| Betamethasone/Propylene Glycbrand: Betamethasone Diprop Augmented | 69 | 48 |
| Metronidazole | 52 | 26 |
| Valacyclovir Hclbrand: Valacyclovir | 47 | 16 |
| Fluocinonide | 45 | 25 |
| Fluorouracil | 35 | 34 |
| Apremilast |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-13
- Last updated
- 2017-03-10
Frequently asked questions
- What is Gregory Seymour's NPI number?
- Gregory Seymour's National Provider Identifier (NPI) is 1851316152, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Seymour's specialty?
- Gregory Seymour is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Seymour located?
- Gregory Seymour's practice location on file with NPPES is 590 Court St, Keene, NH 03431-1719.
- What is Gregory Seymour's phone number?
- The practice phone number listed in the NPPES registry for Gregory Seymour is (603) 354-5454.
- Does Gregory Seymour accept Medicare?
- Gregory Seymour is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Seymour's NPI active?
- Yes — Gregory Seymour's NPI (1851316152) is active in the NPPES registry as of the last update on 2017-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.