Yaiza Martinez-Ortiz, MD
Gastroenterology Physician · San Juan, PR
Yaiza Martinez-Ortiz, MD is a gastroenterology physician with a practice address in San Juan, Puerto Rico, and NPI 1134413701, issued on Jun 1, 2011. Check the license (Puerto Rico 18688, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Yaiza Martinez-Ortiz
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 18688 PR
Self-reported in NPPES; status is on the state search - Practice location
- 29 Washington Street, San Juan, PR 00907
- Phone
- (787) 249-9560
- Enumerated
- Jun 1, 2011
- Record last updated
- Nov 28, 2023
- Fax
- (509) 275-5604
- Medicare enrollment
- Enrolled (PECOS I20170612000493); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 203 in Puerto Rico → Look up another NPI →
Also registered at 29 Washington Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Yaiza Martinez-Ortiz 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 18688Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average gastroenterology physician in 2024
602 Medicare Part D claims for 176 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Pantoprazole Sodium115 claims
- Famotidine112 claims
- Midazolam Hcl48 claims
- Suprep35 claims
- Sod Sulf-Potass Sulf-Mag Sulf33 claims
- Sucralfate27 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: $231.57
5 payments; by number, the most common kind was food and beverage; the largest payer was Tempus AI, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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.
Yaiza Martinez-Ortiz among 203 gastroenterology physician records in Puerto Rico
Yaiza Martinez-Ortiz, 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 2011, is newer than 75% of them.
- NPI issued2011 · 75% of these records are older, 21% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 82% of these records are
- Graduated2011 · 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).
Gastroenterology Physician providers in Puerto Rico
There are 203 gastroenterology physician records in Puerto Rico.
All 203 in Puerto Rico → Every provider in San Juan → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Veroushka Ballester Vargas, M.D.San Juan, PR 009071689868150
- Ricky Jimenez, MDSan Juan, PR 009071457352890
- Wilfredo Pagani, M.D.San Juan, PR 009071477630127
- Suzette Rivera Macmurray, MDSan Juan, PR 009071982678744
- Allan SantiagoSan Juan, PR 009071457327306
- Vasco Eguia Moreda, MDSan Juan, PR 009091316184161
- Carlos Fernandez-Cruz, MDSan Juan, PR 009091699192765
- Hamid Galib, MDSan Juan, PR 009091508825159
Common questions
What is Yaiza Martinez-Ortiz, MD's NPI number?
Yaiza Martinez-Ortiz, MD's National Provider Identifier (NPI) is 1134413701, issued on Jun 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Yaiza Martinez-Ortiz, MD located?
The NPPES record lists a practice address at 29 Washington Street, San Juan, PR, 00907. Phone: (787) 249-9560. Providers update this record themselves, so call before visiting.
How can I verify Yaiza Martinez-Ortiz, MD's license?
NPPES lists Puerto Rico license number 18688, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Yaiza Martinez-Ortiz, MD prescribe under Medicare Part D?
In 2024, Yaiza Martinez-Ortiz, MD had 602 Medicare Part D claims for 176 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.