Adriana I. Marzan Loyola, MD
Gastroenterology Physician · Manati, PR
Adriana I. Marzan Loyola, MD is a gastroenterology physician with a practice address in Manati, Puerto Rico, and NPI 1235591579, issued on Mar 25, 2016. Check the license (Puerto Rico 21301, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Adriana I. Marzan Loyola
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 21301 PR
Self-reported in NPPES; status is on the state search - Practice location
- 200 Calle Hernandez Carrion, Manati, PR 00674
- Phone
- (787) 237-3480
- Enumerated
- Mar 25, 2016
- Record last updated
- Feb 27, 2023
- Medicare enrollment
- Enrolled (PECOS I20221102000476); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 203 in Puerto Rico → Look up another NPI →
Also registered at 200 Calle Hernandez Carrion
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ayleen Roman-Cruz, M.D.Pediatrics Physician1962609610
Verify Adriana I. Marzan Loyola 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 21301Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average gastroenterology physician in 2024
69 Medicare Part D claims for 23 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Pantoprazole Sodium23 claims
- Midazolam 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.
Adriana I. Marzan Loyola among 203 gastroenterology physician records in Puerto Rico
Adriana I. Marzan Loyola, MD is one of 203 gastroenterology physician records with a practice address in Puerto Rico. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 89% of them.
- NPI issued2016 · 89% of these records are older, 6% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated2022 · median 2000 among the 165 with a school on file
- Record last updated2023 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 gastroenterology physician records list a practice address in Manati
They are 15 of the 729 NPPES records with a practice address in Manati, and 203 gastroenterology physician records in Puerto Rico.
All 203 in Puerto Rico → Every provider in Manati → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Mamie Annexy Lopez, MDManati, PR 006741497894505
- Nestor Aponte-Reyes, MDManati, PR 006741003816802
- Betty Chinea Cruz, MDManati, PR 006741073566402
- Aileen Guzman Morales, MDManati, PR 006741083660807
- Juan Marques-Lespier, MDManati, PR 006741407142227
- Jorge Melendez Hernandez, M.D.Manati, PR 006741841491321
- Wilson Ortiz Cotti, M.D.Manati, PR 006741295952984
- Wanda Ortiz Muniz, MDManati, PR 006741245379304
Common questions
What is Adriana I. Marzan Loyola, MD's NPI number?
Adriana I. Marzan Loyola, MD's National Provider Identifier (NPI) is 1235591579, issued on Mar 25, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Adriana I. Marzan Loyola, MD located?
The NPPES record lists a practice address at 200 Calle Hernandez Carrion, Manati, PR, 00674. Phone: (787) 237-3480. Providers update this record themselves, so call before visiting.
How can I verify Adriana I. Marzan Loyola, MD's license?
NPPES lists Puerto Rico license number 21301, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Adriana I. Marzan Loyola, MD prescribe under Medicare Part D?
In 2024, Adriana I. Marzan Loyola, MD had 69 Medicare Part D claims for 23 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.