Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Jan Gajewski, MD

Individual provider Anesthesiology Physician · NPI 1437114097

Dr. Jan Gajewski, MD is an Anesthesiology in Somerset, New Jersey. Graduated from Rutgers New Jersey Medical School in 1990, 36 years ago. Practices with Rwjbh Observation Associates LLC, a 971-clinician group and accepts Medicare assignment. Licensed in New Jersey.

Years since qualifying
36
Trained at
Rutgers New Jersey Medical School
Licensed in
NJ
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

285 Davidson Ave Acnj - Ste 204
Somerset, NJ 08873-4153
Phone: (732) 271-1400
Fax: (732) 271-3543
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Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MA60425 (NJ)
Pain Medicine (Anesthesiology) Physician Taxonomy 207LP2900X · Licence MA06042500 (NJ)

Record details

NPI number1437114097
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 18, 2006
Last updated in NPPESApril 17, 2013
Mailing address285 Davidson Ave, Suite 204, Somerset, NJ 08873-4153

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolRUTGERS NEW JERSEY MEDICAL SCHOOL
Graduated 1990 (36 years in practice)
Group practice Rwjbh Observation Associates Llc — 971 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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