Quick answers
- Does Jeffrey A. Berenson accept Medicare assignment?
- Yes. Medicare's clinician data says Jeffrey A. Berenson 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 Jeffrey A. Berenson see?
- In 2024, CMS data shows 311 Original Medicare patients and 1,278 services for Jeffrey A. Berenson. This counts Original Medicare only and measures volume, not quality.
- What is Jeffrey A. Berenson's NPI number?
- 1902828619. 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 Jeffrey A. Berenson, 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 | 311 |
|---|---|
| Services billed to Medicare | 1,278 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)583 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)268 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)254 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)43 services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)22 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 cholesterol75%
- High blood pressure73%
- Arthritis33%
- Osteoporosis26%
- Atrial fibrillation21%
- Ischemic heart disease17%
Hospitals where Jeffrey A. Berenson works
Medicare's Facility Affiliation Data lists Jeffrey A. Berenson 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.
- Adventist Health Howard MemorialWillits, CA · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 051310
- Adventist Health Mendocino CoastFort Bragg, CA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 051325
- Adventist Health Ukiah ValleyUkiah, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050301
- Providence Santa Rosa Memorial HospitalSanta Rosa, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050174
- Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441
Practice locations
Addresses where Jeffrey A. Berenson is enrolled with Medicare (CMS data updated October 2, 2026).
- 45081 Little Lake StMendocino, CA 95460 (707) 937‑1055
Group practices
Medicare enrollment lists Jeffrey A. Berenson as a member of this group (CMS data updated October 2, 2026).
- Attenda Medical Group Inc3 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in Attenda Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 1978 (48 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) | 1902828619 |
| 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