Yaiza Martinez-Ortiz, MD
NPI 1134413701 · Gastroenterology Physician · San Juan, PR
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yaiza Martinez-Ortiz, MD is a Gastroenterology Physician provider in San Juan, PR (NPI 1134413701).
Provider details
- NPI number
- 1134413701
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 18688 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
45 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 30 | $88 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 15 | $109 |
Typical Medicare-allowed amounts for these services range $88–$109 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 115 | 49 |
| Famotidine | 112 | 49 |
| Midazolam Hcl/Pfbrand: Midazolam Hcl | 48 | 45 |
| Sodium, Potassium,mag Sulfatesbrand: Suprep | 35 | 34 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 33 | 33 |
| Midazolam Hcl | 31 | 31 |
| Sucralfate | 27 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$232 across 5 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
- 2011-06-01
- Last updated
- 2023-11-28
- Certified
- 2023-11-26
Frequently asked questions
- What is Yaiza Martinez-Ortiz's NPI number?
- Yaiza Martinez-Ortiz's National Provider Identifier (NPI) is 1134413701, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yaiza Martinez-Ortiz's specialty?
- Yaiza Martinez-Ortiz is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Yaiza Martinez-Ortiz located?
- Yaiza Martinez-Ortiz's practice location on file with NPPES is 29 Washington Street, San Juan, PR 00907.
- What is Yaiza Martinez-Ortiz's phone number?
- The practice phone number listed in the NPPES registry for Yaiza Martinez-Ortiz is (787) 249-9560.
- Does Yaiza Martinez-Ortiz accept Medicare?
- Yaiza Martinez-Ortiz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yaiza Martinez-Ortiz's NPI active?
- Yes — Yaiza Martinez-Ortiz's NPI (1134413701) is active in the NPPES registry as of the last update on 2023-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.