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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARIA GEMA DECAIN MD
NPI 1609511641
Family Medicine in Washington, DC

Active since May 04, 2022
3800 RESERVOIR RD NW FL PHC7, WASHINGTON, DC 20007(202) 256-7639 Get Directions Write a Review

NPPES record last updated: July 20, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 20, 2026, May 4, 2022 (2 updates tracked since 2022).

About Maria Gema Decain Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARIA GEMA DECAIN MD (NPI 1609511641) is an individual family medicine provider in Washington, District Of Columbia, licensed in Puerto Rico (25054) and active in the NPI registry since May 2022.

NPPES Registry Identity

NPI1609511641
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameMARIA GEMA DECAINCredential: MD
Location Address3800 RESERVOIR RD NW FL PHC7Washington, DC 20007-2113
Mailing AddressMedstar Georgetown University Hospital, 3800 Reservoir Rd Nw. Dept Of NeurologyWashington, DC 20007 · (202) 444-1037 · Fax (202) 444-2813
Phone(202) 256-7639
Sole ProprietorNo
Enumeration DateMay 4, 2022
Last NPPES UpdateJuly 20, 20262 updates tracked since enumeration
NPPES CertifiedJuly 20, 2026
✔ NPI 1609511641 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in PR · 25054
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
3800 RESERVOIR RD NW FL PHC7, Washington, DC 20007
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Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ASHLEY CARLSON SINGH NP
Nurse Practitioner (Acute Care)
3800 RESERVOIR RD NW FL PHC7
WASHINGTON, DC 20007
District of Columbia (202) 444-8525

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Maria Decain's NPI number?

The NPI number for Maria Decain is 1609511641. It was assigned to this individual provider in the NPPES registry on May 4, 2022.

Where is Maria Decain located?

Maria Decain practices at 3800 Reservoir Rd NW Fl Phc7, Washington, DC 20007. The listed phone number is (202) 256-7639.

What is Maria Decain's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

When was this NPI record last updated?

The NPPES record for Maria Decain was last updated on July 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.