Carlos Guerra-Santiago, MD
Specialist · San Juan, PR
Carlos Guerra-Santiago, MD is a specialist with a practice address in San Juan, Puerto Rico, and NPI 1831182773, issued on Aug 25, 2005. Check the license (Puerto Rico 4047, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Carlos Guerra-Santiago
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- 4047 PR
Self-reported in NPPES; status is on the state search - Practice location
- Torre Auxilio Mutuo Suite 712, San Juan, PR 00917
- Phone
- (787) 773-8040
- Enumerated
- Aug 25, 2005
- Record last updated
- Jan 13, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (787) 773-8041
- Medicare enrollment
- Enrolled (PECOS I20100802000480); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest specialist records → All 574 in Puerto Rico → Look up another NPI →
Verify Carlos Guerra-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 4047Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average specialist in 2024
197 Medicare Part D claims for 12 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
Most prescribed
- Sevelamer Carbonate40 claims
- Gabapentin23 claims
- Lanthanum Carbonate14 claims
- Losartan Potassium13 claims
- Rosuvastatin Calcium13 claims
- Clonazepam12 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.
Industry payments in 2024: $122.45
2 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Carlos Guerra-Santiago among 574 specialist records in Puerto Rico
Carlos Guerra-Santiago, MD is one of 574 specialist records with a practice address in Puerto Rico. 54% 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, 83% newer
- In a Medicare fileYes · 54% of these records are
- In the CMS Doctors and Clinicians fileYes · 26% of these records are
- Graduated1971 · median 1985 among the 147 with a school on file
- Record last updated2010 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
162 specialist records list a practice address in San Juan
They are 162 of the 8,960 NPPES records with a practice address in San Juan, and 574 specialist records in Puerto Rico.
All 574 in Puerto Rico → Every provider in San Juan → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Vanessa Casillas Burgos, SLTSan Juan, PR 009171104719111
- Juan Gotos, MDSan Juan, PR 009171710962717
- Edig Lopez TorresSan Juan, PR 009171275454100
- Hugo Montes-Cardona, M.D.San Juan, PR 009171922001577
- Josue Pabon Landron, MDSan Juan, PR 009171932105863
- Gloria Rodriguez, MD, CEC, FACESan Juan, PR 009171649256736
- Edna Zayas, MDSan Juan, PR 009171710961396
- Eliezer Benero-Natal, M.D.San Juan, PR 009181316939648
Common questions
What is Carlos Guerra-Santiago, MD's NPI number?
Carlos Guerra-Santiago, MD's National Provider Identifier (NPI) is 1831182773, issued on Aug 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Carlos Guerra-Santiago, MD located?
The NPPES record lists a practice address at Torre Auxilio Mutuo Suite 712, San Juan, PR, 00917. Phone: (787) 773-8040. Providers update this record themselves, so call before visiting.
How can I verify Carlos Guerra-Santiago, MD's license?
NPPES lists Puerto Rico license number 4047, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Carlos Guerra-Santiago, MD prescribe under Medicare Part D?
In 2024, Carlos Guerra-Santiago, MD had 197 Medicare Part D claims for 12 beneficiaries; the average among specialist prescribers was 1,380. 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.