Oliver Herfort, MD
NPI 1497774848 · Internal Medicine Physician · Claremont, NH
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oliver Herfort, MD is a Internal Medicine Physician provider in Claremont, NH (NPI 1497774848).
Provider details
- NPI number
- 1497774848
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 11828 (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
624 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 294 | $96 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 152 | $68 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 110 | $128 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 38 | $136 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians andG0180 | 17 | $53 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 101 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 362 | 114 |
| Lisinopril | 331 | 99 |
| Losartan Potassium | 197 | 64 |
| Amlodipine Besylate | 183 | 55 |
| Omeprazole | 145 | 48 |
| Levothyroxine Sodium | 142 | 41 |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-18
- Last updated
- 2012-02-22
Frequently asked questions
- What is Oliver Herfort's NPI number?
- Oliver Herfort's National Provider Identifier (NPI) is 1497774848, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oliver Herfort's specialty?
- Oliver Herfort is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Oliver Herfort located?
- Oliver Herfort's practice location on file with NPPES is 241 Elm Street, Claremont, NH 03743.
- What is Oliver Herfort's phone number?
- The practice phone number listed in the NPPES registry for Oliver Herfort is (603) 543-6900.
- Does Oliver Herfort accept Medicare?
- Oliver Herfort is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Oliver Herfort's NPI active?
- Yes — Oliver Herfort's NPI (1497774848) is active in the NPPES registry as of the last update on 2012-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.