Marcia Alayon-Rosario, MD
Surgery Physician · Ponce, PR
Marcia Alayon-Rosario, MD is a surgery physician with a practice address in Ponce, Puerto Rico, and NPI 1508205246, issued on Jun 16, 2013. Check the license (Puerto Rico 21540, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marcia Alayon-Rosario
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 21540 PR
Self-reported in NPPES; status is on the state search - Practice location
- 2520 Ave Obispado, Ponce, PR 00716
- Phone
- (787) 461-0808
- Enumerated
- Jun 16, 2013
- Record last updated
- Oct 1, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (787) 848-1100
- Medicare enrollment
- Enrolled (PECOS I20191016001246); accepts Medicare assignment
- Medical or professional school
- University Of Puerto Rico School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 230 in Puerto Rico → Look up another NPI →
Also registered at 2520 Ave Obispado
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gerardo Alayon Anta, M.D.Cardiovascular Disease Physician1508855644
Verify Marcia Alayon-Rosario 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 21540Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average surgery physician in 2024
72 Medicare Part D claims for 32 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 11 claims were for opioids.
Most prescribed
- Ozempic11 claims
- Tramadol Hcl11 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: $584.00
10 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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.
Marcia Alayon-Rosario among 230 surgery physician records in Puerto Rico
Marcia Alayon-Rosario, MD is one of 230 surgery physician records with a practice address in Puerto Rico. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 73% of them.
- NPI issued2013 · 73% of these records are older, 25% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2013 · median 1996 among the 140 with a school on file
- Record last updated2019 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
32 surgery physician records list a practice address in Ponce
They are 32 of the 3,338 NPPES records with a practice address in Ponce, and 230 surgery physician records in Puerto Rico.
All 230 in Puerto Rico → Every provider in Ponce → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Raul Armstrong, M.D.Ponce, PR 007161215948518
- Zuleika Diaz Negron, MD FACSPonce, PR 007161710189402
- Ashla Gaibi RodriguezPonce, PR 007161962878140
- Juan Gonzalez Cruz, M.D.Ponce, PR 007161265491963
- Hector Lopez Gonzalez, MD, MHAPonce, PR 007161871158667
- Emanuel Mejias Lafontaine, MDPonce, PR 007161578087250
- Jose Nieves-Munoz, MDPonce, PR 007161770105017
- Jose Ortiz-FullanaPonce, PR 007161275182388
Common questions
What is Marcia Alayon-Rosario, MD's NPI number?
Marcia Alayon-Rosario, MD's National Provider Identifier (NPI) is 1508205246, issued on Jun 16, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Marcia Alayon-Rosario, MD located?
The NPPES record lists a practice address at 2520 Ave Obispado, Ponce, PR, 00716. Phone: (787) 461-0808. Providers update this record themselves, so call before visiting.
How can I verify Marcia Alayon-Rosario, MD's license?
NPPES lists Puerto Rico license number 21540, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Marcia Alayon-Rosario, MD prescribe under Medicare Part D?
In 2024, Marcia Alayon-Rosario, MD had 72 Medicare Part D claims for 32 beneficiaries; the average among surgery physician prescribers was 147. 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.