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

Marie E. Castillo-Alcasid, MD

Individual provider Internal Medicine Physician · NPI 1124135025

Marie E. Castillo-Alcasid, MD is an Internal Medicine in Fulton, New York. Qualified in 1990, 36 years ago. Practices with Oswego Hospital, a 59-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
36
Licensed in
NY
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

522 S 4th St Ste 500
Fulton, NY 13069-2946
Phone: (315) 598-4740
Fax: (315) 598-4719
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 237698 (NY)

Record details

NPI number1124135025
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 24, 2006
Last updated in NPPESJuly 8, 2007
Mailing address239 Oneida St, Fulton, NY 13069-1228

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1990 (36 years in practice)
Group practice Oswego Hospital — 59 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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