Quick answers
- Does Oliver P. Herfort accept Medicare assignment?
- Yes. Medicare's clinician data says Oliver P. Herfort accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Oliver P. Herfort see?
- In 2024, CMS data shows 372 Original Medicare patients and 670 services for Oliver P. Herfort. This counts Original Medicare only and measures volume, not quality.
- What is Oliver P. Herfort's NPI number?
- 1497774848. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Oliver P. Herfort, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 372 |
|---|---|
| Services billed to Medicare | 670 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)294 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)152 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)110 services
- Transitional care management services for problem of at least moderate complexity (99495)38 services
- 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 and (G0180)17 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure58%
- High cholesterol45%
- Arthritis35%
- Diabetes22%
- Depression19%
- Anxiety19%
Hospitals where Oliver P. Herfort works
Medicare's Facility Affiliation Data lists Oliver P. Herfort at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Alice Peck Day Memorial HospitalLebanon, NH · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 301305
- Mary Hitchcock Memorial HospitalLebanon, NH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 300003
- Mt Ascutney HospitalWindsor, VT · Critical Access Hospital · Emergency services: listed by Medicare · CCN 471302
- New London HospitalNew London, NH · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 301304
- Valley Regional HospitalClaremont, NH · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 301308
Practice locations
Addresses where Oliver P. Herfort is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Medical Ctr DrLebanon, NH 03756 (603) 650‑5000
- 18 Old Etna RdLebanon, NH 03766 (603) 650‑4000
Group practices
Medicare enrollment lists Oliver P. Herfort as a member of this group (CMS data updated October 2, 2026).
- Mary Hitchcock Memorial Hospital1,280 clinicians in the group
Specialties
- Internal Medicineprimary
- Infectious Diseasealso
Other internal medicine doctors in Lebanon
Clinicians with the same Medicare primary specialty in Lebanon, NH — not a recommendation.
Other clinicians in Mary Hitchcock Memorial Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1497774848 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians