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

Stephen P Sullivan, MD

Individual provider Psychiatry Physician · NPI 1891738597

Stephen P Sullivan, MD is a Psychiatry in Tarrytown, New York. Graduated from State University of New York Downstate Medical Center in 1997, 29 years ago. Practices with Westchester Psychiatric Associates, PLLC, a 3-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
29
Trained at
State University of New York Downstate Medical Center
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

120 White Plains Rd Ste 420
Tarrytown, NY 10591-5522
Phone: (914) 909-5838
Fax: (914) 909-5840
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 100 Woods Rd., Valhalla, NY 10595 — (914) 493-7124

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 219553 (NY)

Record details

NPI number1891738597
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 13, 2006
Last updated in NPPESOctober 31, 2025
Certification dateOctober 31, 2025
Mailing address120 White Plains Rd Ste 420, Tarrytown, NY 10591-5522

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolSTATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Graduated 1997 (29 years in practice)
Group practice Westchester Psychiatric Associates, Pllc — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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