Doctor profile · Federal record
Dr. Jan Gajewski, M.D.
Anesthesiology Physician (CMS: Anesthesiology) · Pain Medicine (Anesthesiology) Physician · Somerset, NJ
- NPI 1437114097
- Accepts Medicare
- 36 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
285 Davidson Ave, Acnj - Suite 204
Somerset, NJ 088734153
(732) 271-1400
fax (732) 271-3543
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- April 17, 2013
- Year of graduation
- 1990 — 36 yrs since
- Specialty taxonomy
- 207L00000X — NUCC code
- State licenses (2)
- New Jersey #MA60425 · New Jersey #MA06042500
- Medicaid
- NJ #6499805
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1437114097. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
48
Distinct HCPCS
3
Medicare allowed
$5,908
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
00731 |
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 20 | 20 | $134 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 15 | 14 | $53 | |
01922 |
Anesthesia for x-ray or radiation therapy | 13 | 13 | $186 |
In context: peer comparison
Among 19 peers in Somerset Anesthesiology Physician, average services per provider: 41. This provider delivers 1.2× the peer median.Open Payments
Industry payments received
All-time total
$36
Transactions
2
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Merck Sharp & Dohme LLC | 1 | $21.54 | |
| La Jolla Pharmaceutical Company | 1 | $14.52 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Jan Gajewski's medical specialty?
Dr. Jan Gajewski practices Anesthesiology Physician in Somerset, NJ.
Where does Dr. Jan Gajewski practice?
Dr. Jan Gajewski practices at 285 Davidson Ave, Somerset, NJ 088734153. Office phone: 7322711400.
What is Dr. Jan Gajewski's NPI?
Dr. Jan Gajewski's National Provider Identifier (NPI) is 1437114097, issued by NPPES.
Does Dr. Jan Gajewski accept Medicare assignment?
Yes. Dr. Jan Gajewski accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jan Gajewski commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (HCPCS 00731); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Anesthesia for x-ray or radiation therapy (HCPCS 01922). Source: CMS Medicare Physician & Other Practitioners file.