Charles Hammer, M.D.
NPI 1063456226 · Dermatology Physician · Littleton, NH
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Hammer, M.D. is a Dermatology Physician provider in Littleton, NH (NPI 1063456226).
Provider details
- NPI number
- 1063456226
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 9247 (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 tenure28% of score
20 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
3,309 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 | 1,188 | $90 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,025 | $7 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 373 | $61 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 114 | $111 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 107 | $127 |
| Biopsy of Related Skin Growth, First Growth |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 190 | 120 |
| Ketoconazole | 87 | 42 |
| Fluorouracil | 87 | 81 |
| Methotrexate Sodiumbrand: Methotrexate | 76 | 27 |
| Secukinumabbrand: Cosentyx Sensoready (2 Pens) | 60 | — |
| Adalimumabbrand: Humira Pen | 59 | — |
| Imiquimod | 58 | 45 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-16
- Last updated
- 2013-12-29
Frequently asked questions
- What is Charles Hammer's NPI number?
- Charles Hammer's National Provider Identifier (NPI) is 1063456226, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Hammer's specialty?
- Charles Hammer is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Hammer located?
- Charles Hammer's practice location on file with NPPES is 580 Saint Johnsbury Rd, Littleton, NH 03561-3437.
- What is Charles Hammer's phone number?
- The practice phone number listed in the NPPES registry for Charles Hammer is (603) 444-2002.
- Does Charles Hammer accept Medicare?
- Charles Hammer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Hammer's NPI active?
- Yes — Charles Hammer's NPI (1063456226) is active in the NPPES registry as of the last update on 2013-12-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.