Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Megan Desai, DO

Individual provider Psychiatry Physician · NPI 1861955338

Megan Desai, DO practises Psychiatry in Stony Brook, New York. Qualified in 2019, 7 years ago. Practices with John T Mather Memorial Hospital, a 180-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
7
Licensed in
NY
In the registry since
2019
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

101 Nicolls Rd Rm 20
Stony Brook, NY 11794-0001
Phone: (646) 444-3005
Fax: (631) 444-7534
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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 325042 (NY)

Record details

NPI number1861955338
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 10, 2019
Last updated in NPPESMay 15, 2025
Certification dateMay 15, 2025

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice John T Mather Memorial Hospital — 180 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients41
Services billed 84 a service is one billed item, such as a visit, a test or a procedure
Average patient age59

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at John T Mather Memorial Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 180 clinicians in the practice; 12 are shown here.

Other providers in Stony Brook