Walter Janer-Martinez, M.D.
NPI 1134122625 · Gastroenterology Physician · Bayamon, PR
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Walter Janer-Martinez, M.D. is a Gastroenterology Physician provider in Bayamon, PR (NPI 1134122625).
Provider details
- NPI number
- 1134122625
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 13568 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
21 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 350 | 98 |
| Omeprazole | 343 | 105 |
| Pantoprazole Sodium | 214 | 63 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 116 | 112 |
| Sodium, Potassium,mag Sulfatesbrand: Suprep | 104 | 100 |
| Linaclotidebrand: Linzess | 87 | 23 |
| Esomeprazole Magnesium | 42 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$359 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-27
- Last updated
- 2007-07-31
Frequently asked questions
- What is Walter Janer-Martinez's NPI number?
- Walter Janer-Martinez's National Provider Identifier (NPI) is 1134122625, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walter Janer-Martinez's specialty?
- Walter Janer-Martinez is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Walter Janer-Martinez located?
- Walter Janer-Martinez's practice location on file with NPPES is Edif Medico Santa Cruz, Bayamon, PR 00961-6910.
- What is Walter Janer-Martinez's phone number?
- The practice phone number listed in the NPPES registry for Walter Janer-Martinez is (787) 779-6666.
- Does Walter Janer-Martinez accept Medicare?
- Walter Janer-Martinez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Walter Janer-Martinez's NPI active?
- Yes — Walter Janer-Martinez's NPI (1134122625) is active in the NPPES registry as of the last update on 2007-07-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.