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

Dr. Jacob J. Oyer, MD

Individual provider Psychiatry Physician · NPI 1376961235

Dr. Jacob J. Oyer, MD is a Psychiatry in Amherst, Massachusetts. Graduated from Tufts University School of Medicine in 2013, 13 years ago. Practices with Baystate Medical Practices Inc, a 1,346-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
13
Trained at
Tufts University School of Medicine
Licensed in
MA
In the registry since
2014
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

150 Infirmary Way
Amherst, MA 01003-9288
Phone: (413) 577-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 274373 (MA)

Record details

NPI number1376961235
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 28, 2014
Last updated in NPPESOctober 23, 2024
Certification dateOctober 23, 2024
Mailing address111 County Cir, Amherst, MA 01003-9255

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolTUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Baystate Medical Practices Inc — 1346 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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