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

MS. Glennis Mercedes Alvarado

Individual provider Internal Medicine Physician · NPI 1932442100

MS. Glennis Mercedes Alvarado is an Internal Medicine Physician in East Setauket, New York. Licensed in North Carolina and New York. Registered with an NPI since 2013.

Licensed in
NC, NY
In the registry since
2013
Specialties on file
2
Claim this listing Report a problem Suggest an edit

Practice location Address checks out

205 N Belle Mead Rd
East Setauket, NY 11733-3483
Phone: (212) 659-8551
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 283155 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 239933 (NC)

Record details

NPI number1932442100
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedApril 5, 2013
Last updated in NPPESAugust 26, 2020
Certification dateAugust 26, 2020

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 patients79
Services billed 95 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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.

Other providers in East Setauket