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

Stephen Jay Seiner, MD

Individual provider Psychiatry Physician · NPI 1245298835

Stephen Jay Seiner, MD is a Psychiatry in Belmont, Massachusetts. Graduated from Washington University School of Medicine in 1994, 32 years ago. Practices with The McLean Hospital Corporation, a 186-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
32
Trained at
Washington University School of Medicine
Licensed in
MA
In the registry since
2006
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

115 Mill St McLean Hospital
Belmont, MA 02478-1041
Phone: (617) 855-2204
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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 150292 (MA)

Record details

NPI number1245298835
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 3, 2006
Last updated in NPPESJuly 13, 2026
Mailing address115 Mill St, McLean Hospital, Belmont, MA 02478-1041

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1994 (32 years in practice)
Group practice The McLean Hospital Corporation — 186 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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