Francisco Nieves-Santiago, M.D.
Family Medicine Physician · Guayanilla, PR
Francisco Nieves-Santiago, M.D. is a family medicine physician with a practice address in Guayanilla, Puerto Rico, and NPI 1407827066, issued on Jan 31, 2006. Check the license (Puerto Rico 11820, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Francisco Nieves-Santiago
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 11820 PR
Self-reported in NPPES; status is on the state search - Practice location
- C1 Calle Santoni, Guayanilla, PR 00656
- Phone
- (787) 835-3705
- Enumerated
- Jan 31, 2006
- Record last updated
- Feb 12, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081226000135); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 604 in Puerto Rico → Look up another NPI →
Verify Francisco Nieves-Santiago 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 11820Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average family medicine physician in 2024
10,349 Medicare Part D claims for 419 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. 19 claims were for opioids.
Most prescribed
- Atorvastatin Calcium646 claims
- Gabapentin588 claims
- Synthroid457 claims
- Famotidine435 claims
- Metformin Hcl355 claims
- Simvastatin350 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.
Bills Medicare through one group practice
- Med Centro IncPonce, PR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Francisco Nieves-Santiago among 604 family medicine physician records in Puerto Rico
Francisco Nieves-Santiago, M.D. 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 fileYes · 39% of these records are
- Graduated1992 · median 1995 among the 234 with a school on file
- Record last updated2015 · 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).
3 family medicine physician records list a practice address in Guayanilla
They are 3 of the 85 NPPES records with a practice address in Guayanilla, and 604 family medicine physician records in Puerto Rico.
All 604 in Puerto Rico → Every provider in Guayanilla → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Juan Pillot Costas, MDGuayanilla, PR 006561154307015
- Anabis Vera Gonzalez, MDGuayanilla, PR 006561447290739
- Adrian Arroyo, MDHatillo, PR 006591417961145
- Kathy Caraballo Rivera, MDBayamon, PR 006591992164230
- Luis VelezHatillo, PR 006591154874121
- Xavier Alers-Cardona, M.DHormigueros, PR 006601386966455
- Eric Figueroa - Rios, M.D.Garrochales, PR 006521194765701
- Ana Qulies Ruiz, MDHormigueros, PR 006601235112368
Common questions
What is Francisco Nieves-Santiago, M.D.'s NPI number?
Francisco Nieves-Santiago, M.D.'s National Provider Identifier (NPI) is 1407827066, issued on Jan 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Francisco Nieves-Santiago, M.D. located?
The NPPES record lists a practice address at C1 Calle Santoni, Guayanilla, PR, 00656. Phone: (787) 835-3705. Providers update this record themselves, so call before visiting.
How can I verify Francisco Nieves-Santiago, M.D.'s license?
NPPES lists Puerto Rico license number 11820, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Francisco Nieves-Santiago, M.D. prescribe under Medicare Part D?
In 2024, Francisco Nieves-Santiago, M.D. had 10,349 Medicare Part D claims for 419 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.