Marcos A. Ayala Rivera, M.D.
General Practice Physician · Mayaguez, PR
Marcos A. Ayala Rivera, M.D. is a general practice physician with a practice address in Mayaguez, Puerto Rico, and NPI 1194772640, issued on May 30, 2006. Check the license (Puerto Rico 6806, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marcos A. Ayala Rivera
- Credential
- M.D.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- 6806 PR
Self-reported in NPPES; status is on the state search - Practice location
- 167E Calle Ramos Antonini, Mayaguez, PR 00680
- Phone
- (787) 833-5235
- Enumerated
- May 30, 2006
- Record last updated
- Aug 16, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081105000428); accepts Medicare assignment
- Entity
- Type 1 · individual
Verify Marcos A. Ayala Rivera 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 6806Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average general practice physician in 2024
9,460 Medicare Part D claims for 302 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium677 claims
- Losartan Potassium592 claims
- Gabapentin480 claims
- Montelukast Sodium428 claims
- Omeprazole414 claims
- Synthroid395 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: $314.39
3 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 4,259 providers of this specialty with any payment received $1,273.40 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.
154 general practice physician records list a practice address in Mayaguez
They are 154 of the 1,408 NPPES records with a practice address in Mayaguez, and 4,170 general practice physician records in Puerto Rico.
All 154 in Mayaguez → All 4,170 in Puerto Rico → Every provider in Mayaguez →
Other general practice physician records in Puerto Rico
- Veronica Abraham, MDBayamon, PR1881204089
- Manuel Abraham Gonzalez, M.D.San Juan, PR1811297534
- Jennifer Abraham Vega, MDSan Juan, PR1366030595
- Jose M. Abreu Guzman, M.D.Manati, PR1982745816
- Steven Abreu Reyes, M.D.Las Piedras, PR1801146667
- Caren Abreu Takemura, MDCarolina, PR1669110805
- Ibrahim Abu-Usbaabdel-FattahAibonito, PR1285851758
- Nidal Abukhalil Rashid, MDHatillo, PR1760435226
- Adrian Acevedo, M.D.Santa Isabel, PR1518173624
- Angel Acevedo, MDSan Juan, PR1689663817
Common questions
What is Marcos A. Ayala Rivera, M.D.'s NPI number?
Marcos A. Ayala Rivera, M.D.'s National Provider Identifier (NPI) is 1194772640, issued on May 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marcos A. Ayala Rivera, M.D. located?
The NPPES record lists a practice address at 167E Calle Ramos Antonini, Mayaguez, PR, 00680. Phone: (787) 833-5235. Providers update this record themselves, so call before visiting.
How can I verify Marcos A. Ayala Rivera, M.D.'s license?
NPPES lists Puerto Rico license number 6806, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Marcos A. Ayala Rivera, M.D. prescribe under Medicare Part D?
In 2024, Marcos A. Ayala Rivera, M.D. had 9,460 Medicare Part D claims for 302 beneficiaries; the average among general practice physician prescribers was 3,030. 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.