Walter E. Janer-Martinez, M.D.
Gastroenterology Physician · Bayamon, PR
Walter E. Janer-Martinez, M.D. is a gastroenterology physician with a practice address in Bayamon, Puerto Rico, and NPI 1134122625, issued on May 27, 2005. Check the license (Puerto Rico 13568, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Walter E. Janer-Martinez
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 13568 PR
Self-reported in NPPES; status is on the state search - Practice location
- Edif Medico Santa Cruz, Bayamon, PR 00961
- Phone
- (787) 779-6666
- Enumerated
- May 27, 2005
- Record last updated
- Jul 31, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (787) 786-3501
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 203 in Puerto Rico → Look up another NPI →
Also registered at Edif Medico Santa Cruz
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Octavio Jordan Lopez, M.D.Gastroenterology Physician1760475024
- Jose Morales Alvarado, MDGynecology Physician1790754042
- Edwin Piazza, MDNeurological Surgery Physician1558336727
- Samuel Ruiz, M.D.Specialist1144298688
Verify Walter E. Janer-Martinez 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 13568Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average gastroenterology physician in 2024
1,818 Medicare Part D claims for 418 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 12 claims were for opioids.
Most prescribed
- Famotidine350 claims
- Omeprazole343 claims
- Pantoprazole Sodium214 claims
- Sod Sulf-Potass Sulf-Mag Sulf116 claims
- Suprep104 claims
- Linzess87 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: $358.57
9 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. 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.
Walter E. Janer-Martinez among 203 gastroenterology physician records in Puerto Rico
Walter E. Janer-Martinez, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 80% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileNo · 82% of these records are
- Record last updated2007 · 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 Bayamon → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Jorge Cortes-Ruiz, M.D.Bayamon, PR 009611770586273
- Wilma Cotto Oyola, MDBayamon, PR 009611235320086
- Octavio Jordan Lopez, M.D.Bayamon, PR 009611760475024
- Carlos Latimer, MD FACP FACGBayamon, PR 009611508969833
- Luis Marrero-Torres, MDBayamon, PR 009611184606998
- Rafael Morales Solis, M.D.Bayamon, PR 009611871579425
- Roberto Osorio Manotas, M.D.Bayamon, PR 009611215123161
- Roger Polish, M.D.Bayamon, PR 009611528047339
Common questions
What is Walter E. Janer-Martinez, M.D.'s NPI number?
Walter E. Janer-Martinez, M.D.'s National Provider Identifier (NPI) is 1134122625, issued on May 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Walter E. Janer-Martinez, M.D. located?
The NPPES record lists a practice address at Edif Medico Santa Cruz, Bayamon, PR, 00961. Phone: (787) 779-6666. Providers update this record themselves, so call before visiting.
How can I verify Walter E. Janer-Martinez, M.D.'s license?
NPPES lists Puerto Rico license number 13568, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Walter E. Janer-Martinez, M.D. prescribe under Medicare Part D?
In 2024, Walter E. Janer-Martinez, M.D. had 1,818 Medicare Part D claims for 418 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.