Quick answers
- Does Clifford J. Bierman accept Medicare assignment?
- Yes. Medicare's clinician data says Clifford J. Bierman 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 Clifford J. Bierman see?
- In 2024, CMS data shows 892 Original Medicare patients and 1,006 services for Clifford J. Bierman. This counts Original Medicare only and measures volume, not quality.
- What is Clifford J. Bierman's NPI number?
- 1003890021. 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 Clifford J. Bierman, 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 | 892 |
|---|---|
| Services billed to Medicare | 1,006 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Anesthesia for lens surgery (00142)644 services
- Anesthesia for other procedure on eye (00140)250 services
- Anesthesia for retinal surgery (00145)102 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 pressure69%
- Arthritis42%
- Anxiety24%
- Ischemic heart disease22%
- Diabetes21%
Practice locations
Addresses where Clifford J. Bierman is enrolled with Medicare (CMS data updated October 2, 2026).
- 1440 Main StWaltham, MA 02451 (781) 891‑9300
Group practices
Medicare enrollment lists Clifford J. Bierman as a member of this group (CMS data updated October 2, 2026).
- JJM Medical Services PC35 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Waltham
Clinicians with the same Medicare primary specialty in Waltham, MA — not a recommendation.
Other clinicians in JJM Medical Services PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Connecticut School Of Medicine |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003890021 |
| 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
- 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