Zhamarie Ortiz-Mercado, M.D.
NPI 1841391927 · Gastroenterology Physician · San Juan, PR
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zhamarie Ortiz-Mercado, M.D. is a Gastroenterology Physician provider in San Juan, PR (NPI 1841391927).
Provider details
- NPI number
- 1841391927
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 15931 (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
19 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
75 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 | 39 | $88 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 23 | $56 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 13 | $302 |
Typical Medicare-allowed amounts for these services range $56–$302 (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 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Naloxone Hcl | 285 | 228 |
| Omeprazole | 259 | 104 |
| Pantoprazole Sodium | 157 | 53 |
| Famotidine | 152 | 49 |
| Lidocaine Hclbrand: Lidocaine Hcl Viscous | 122 | 119 |
| Sucralfate | 121 | 57 |
| Metoclopramide Hcl | 120 | 41 |
| Dicyclomine Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$100 across 1 record (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
- 2006-09-25
- Last updated
- 2013-05-10
Frequently asked questions
- What is Zhamarie Ortiz-Mercado's NPI number?
- Zhamarie Ortiz-Mercado's National Provider Identifier (NPI) is 1841391927, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zhamarie Ortiz-Mercado's specialty?
- Zhamarie Ortiz-Mercado is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Zhamarie Ortiz-Mercado located?
- Zhamarie Ortiz-Mercado's practice location on file with NPPES is Senderos De Montehiedra, San Juan, PR 00926.
- What is Zhamarie Ortiz-Mercado's phone number?
- The practice phone number listed in the NPPES registry for Zhamarie Ortiz-Mercado is (787) 963-0550.
- Does Zhamarie Ortiz-Mercado accept Medicare?
- Zhamarie Ortiz-Mercado is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zhamarie Ortiz-Mercado's NPI active?
- Yes — Zhamarie Ortiz-Mercado's NPI (1841391927) is active in the NPPES registry as of the last update on 2013-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.