NPPES file of Aug 9, 2026

Mary Grace Aguilar Santos, M.D.

Geriatric Medicine (Internal Medicine) Physician · Sinajana, GU

Mary Grace Aguilar Santos, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Sinajana, Guam, and NPI 1669647772, issued on Apr 29, 2008. Check the license (Guam M-1792, as entered in NPPES) with the Guam board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1669647772
Name
Mary Grace Aguilar Santos
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License numbers
M-1792 GU
125052317 IL
Self-reported in NPPES; status is on the state search
Practice location
736 Route 4, Sinajana, GU 96910
Phone
(671) 649-7232
Enumerated
Apr 29, 2008
Record last updated
Jul 28, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(671) 649-7233
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 736 Route 4

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Robert Nerves, MD, FACP, FPCPNephrology Physician1881834109
  2. Saied Safabakhsh, M.D.Nephrology Physician1437251808
  3. Tiffany Troxel, PACMedical Physician Assistant1124082227

Verify Mary Grace Aguilar Santos in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Guam board licenses this profession
    Search for license M-1792    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Guam license search

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1 geriatric medicine (internal medicine) physician records list a practice address in Sinajana

They are 1 of the 11 NPPES records with a practice address in Sinajana, and 1 geriatric medicine (internal medicine) physician records in Guam. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1 in Guam → Every provider in Sinajana →

Common questions

What is Mary Grace Aguilar Santos, M.D.'s NPI number?

Mary Grace Aguilar Santos, M.D.'s National Provider Identifier (NPI) is 1669647772, issued on Apr 29, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Mary Grace Aguilar Santos, M.D. located?

The NPPES record lists a practice address at 736 Route 4, Sinajana, GU, 96910. Phone: (671) 649-7232. Providers update this record themselves, so call before visiting.

How can I verify Mary Grace Aguilar Santos, M.D.'s license?

NPPES lists Guam license number M-1792, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.