Jonathan Mazer, M.D.
NPI 1902288194ActiveIndividual· Anesthesiology· Boston, MA
Anesthesiology (M.D.) with Rwjbh Observation Associates LLC and 3 other groups, practicing in Boston, Massachusetts. Medicare paid $40,871 for services to 243 patients in 2024. Janssen Biotech, Inc. was the largest of 2 companies reporting payments in 2025, $36.15 in all, mostly food and beverage. Lists Valley Hospital as a hospital affiliation.
Overview
| NPI | 1902288194 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 24, 2015 |
| Last updated in NPPES | May 22, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 25MA10401500 | NJ |
| Student in an Organized Health Care Education/Training Program | 390200000X | 263741 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Anesthesiology (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 243 |
|---|---|
| Services billed | 263 across 42 procedure codes |
| Paid by Medicare | $40,871 |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Anesthesiology |
Medical groups
- Rwjbh Observation Associates LLCJersey City, NJ · 1,008 clinicians
- Bay AnesthesiaEast Brunswick, NJ · 80 clinicians
- Bergen Anesthesia Group, P.C.Ridgewood, NJ · 66 clinicians
- Centurion Anesthesia Surgical Centers LLCSaddle Brook, NJ · 48 clinicians
Hospital affiliation
- Valley HospitalParamus, NJ
Industry payments (Open Payments)
- 2025$36.15 · 2 payments from 2 companies
- 2024$3,252 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $21.87 | 1 |
| Vertex Pharmaceuticals Incorporated | $14.28 | 1 |
What the 2025 payments were for
- Food and Beverage$36.15 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Anesthesiology providers in Boston
- 1952874737
- 1588682025
- 1093756629
- 1699456483
- 1346811510
- 1326085390
- 1831688555
- 1891937298
- 1699120550
- 1902097736
- 1730839333
- 1669447835