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Dr. Mary Grace Aguilar Santos, M.D.

Geriatric Medicine (Internal Medicine) Physician in Sinajana, GU · enumerated 2008.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669647772

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Registry record

Entity type Individual (Type 1)
Name Dr. Mary Grace Aguilar Santos
Credential M.D.
Sex Female
Practice address 736 Route 4, Suite 103, Sinajana, GU, 96910
Phone (671) 649-7232
Fax (671) 649-7233
Enumeration date Apr 29, 2008
Last updated in NPPES Jul 28, 2016

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 125052317 (IL) Secondary
207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License M-1792 (GU) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Mary Grace Santos's NPI record?
Cross-check NPI 1669647772 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1669647772 active?
Yes, as of the latest NPPES snapshot, NPI 1669647772 is active (record last updated 2016-07-28).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-07-28.