Gladys C. Sastre, MD
Internal Medicine Physician · San Juan, PR
Gladys C. Sastre, MD is an internal medicine physician with a practice address in San Juan, Puerto Rico, and NPI 1962491258, issued on Oct 19, 2005. Check the license (Puerto Rico 13011, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gladys C. Sastre
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 13011 PR
Self-reported in NPPES; status is on the state search - Practice location
- 369 Ave DE Diego, San Juan, PR 00923
- Phone
- (787) 753-8778
- Enumerated
- Oct 19, 2005
- Record last updated
- Jun 11, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (787) 731-7717
- Medicare enrollment
- Enrolled (PECOS I20050415000213); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,146 in Puerto Rico → Look up another NPI →
Also registered at 369 Ave DE Diego
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Fernando Vizcarrondo, M.D.Surgery Physician1336121425
Verify Gladys C. Sastre in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
Search for license 13011Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,130 Medicare Part D claims for 160 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium143 claims
- Gabapentin120 claims
- Metformin Hcl106 claims
- Atorvastatin Calcium105 claims
- Irbesartan83 claims
- Prednisone81 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Gladys C. Sastre among 1,146 internal medicine physician records in Puerto Rico
Gladys C. Sastre, MD is one of 1,146 internal medicine physician records with a practice address in Puerto Rico. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated1973 · median 1996 among the 595 with a school on file
- Record last updated2010 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
322 internal medicine physician records list a practice address in San Juan
They are 322 of the 8,960 NPPES records with a practice address in San Juan, and 1,146 internal medicine physician records in Puerto Rico.
All 1,146 in Puerto Rico → Every provider in San Juan → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nestor AllendeSan Juan, PR 009231528285202
- Rosa Allende, M.D.San Juan, PR 009231578782728
- Jose Diaz-Correa, M.D.San Juan, PR 009231821126095
- Anibal Feliciano Deliz, MDSan Juan, PR 009231124248315
- Arnaldo Marrero Rodriguez, M.DSan Juan, PR 009231598822512
- Eliut Melendez Ortiz, MDSan Juan, PR 009231891761896
- Angel Miro-Diaz, MDSan Juan, PR 009231821064346
- Eileen Ramirez-Vilches, M.D.Rio Piedras, PR 009231942277918
Common questions
What is Gladys C. Sastre, MD's NPI number?
Gladys C. Sastre, MD's National Provider Identifier (NPI) is 1962491258, issued on Oct 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gladys C. Sastre, MD located?
The NPPES record lists a practice address at 369 Ave DE Diego, San Juan, PR, 00923. Phone: (787) 753-8778. Providers update this record themselves, so call before visiting.
How can I verify Gladys C. Sastre, MD's license?
NPPES lists Puerto Rico license number 13011, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Gladys C. Sastre, MD prescribe under Medicare Part D?
In 2024, Gladys C. Sastre, MD had 2,130 Medicare Part D claims for 160 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
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.