Isamir Santiago Mendez, MD
Family Medicine Physician · Manati, PR
Isamir Santiago Mendez, MD is a family medicine physician with a practice address in Manati, Puerto Rico, and NPI 1639101264, issued on Jul 6, 2006. Check the license (Puerto Rico 15556, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Isamir Santiago Mendez
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 15556 PR
Self-reported in NPPES; status is on the state search - Practice location
- Carr. # 2 Intl 668, Manati, PR 00674
- Phone
- (787) 621-3700
- Enumerated
- Jul 6, 2006
- Record last updated
- Oct 23, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (787) 621-3798
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 604 in Puerto Rico → Look up another NPI →
Verify Isamir Santiago Mendez 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 15556Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% more Medicare Part D claims than the average family medicine physician in 2024
4,470 Medicare Part D claims for 124 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 35 claims were for opioids.
Most prescribed
- Famotidine316 claims
- Atorvastatin Calcium294 claims
- Omeprazole270 claims
- Synthroid243 claims
- Gabapentin232 claims
- Losartan Potassium213 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.
Isamir Santiago Mendez among 604 family medicine physician records in Puerto Rico
Isamir Santiago Mendez, MD is one of 604 family 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 43% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 39% of these records are
- Record last updated2012 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
34 family medicine physician records list a practice address in Manati
They are 34 of the 729 NPPES records with a practice address in Manati, and 604 family medicine physician records in Puerto Rico.
All 604 in Puerto Rico → Every provider in Manati → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Wilfredo Aviles, MDManati, PR 006741285611780
- Felix Betancourt-Bojos, M.D.Manati, PR 006741841244159
- Carlos Cabrera, MDManati, PR 006741902893316
- Vielka Cintron Rivera, MDManati, PR 006741295837516
- Jose Delgado, MDManati, PR 006741699791764
- Felix Falcon-Torres, M.D.Manati, PR 006741841404209
- Jorge Jimenez Maldonado, MDManati, PR 006741942220181
- Omar Morales, M.D.Manati, PR 006741013974989
Common questions
What is Isamir Santiago Mendez, MD's NPI number?
Isamir Santiago Mendez, MD's National Provider Identifier (NPI) is 1639101264, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Isamir Santiago Mendez, MD located?
The NPPES record lists a practice address at Carr. # 2 Intl 668, Manati, PR, 00674. Phone: (787) 621-3700. Providers update this record themselves, so call before visiting.
How can I verify Isamir Santiago Mendez, MD's license?
NPPES lists Puerto Rico license number 15556, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Isamir Santiago Mendez, MD prescribe under Medicare Part D?
In 2024, Isamir Santiago Mendez, MD had 4,470 Medicare Part D claims for 124 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.