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Internal Medicine

Maricruz Merino, MD

Works at hospitals in Gallup, NM · New Mexico

Summary

Dr. Maricruz Merino, MD is an internal medicine doctor at 516 E Nizhoni Blvd, Gallup, NM 87301. Phone: (505) 722-1000. Accepts Medicare assignment. In 2024, Maricruz Merino had 88 Original Medicare patients and 305 services. NPI 1649479874. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 516 E Nizhoni Blvd, Gallup, NM 87301 · Directions
  • Phone: (505) 722‑1000
  • Medicare: Accepts Medicare assignment
  • Hospital: Gallup Indian Medical Center
  • Group practice: DHHS, PHS, Naihs, Gallup Indian Medical Center
  • Medical school: Warren Alpert Medical School Of Brown University · graduated 2007 (19 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Maricruz Merino, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Maricruz Merino accept Medicare assignment?
Yes. Medicare's clinician data says Maricruz Merino accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Maricruz Merino see?
In 2024, CMS data shows 88 Original Medicare patients and 305 services for Maricruz Merino. This counts Original Medicare only and measures volume, not quality.
What is Maricruz Merino's NPI number?
1649479874. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Maricruz Merino, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients88
Services billed to Medicare305
Different services or procedures12
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)119 services
  2. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)68 services
  3. Hospital discharge day management, more than 30 minutes (99239)49 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)29 services
  5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)27 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • Diabetes65%
  • High cholesterol64%
  • Arthritis44%
  • Chronic kidney disease35%
  • Depression31%

Hospitals where Maricruz Merino works

Medicare's Facility Affiliation Data lists Maricruz Merino at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Maricruz Merino is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Maricruz Merino as a member of this group (CMS data updated October 2, 2026).

  • DHHS, PHS, Naihs, Gallup Indian Medical Center186 clinicians in the group

Specialties

Find other Internal Medicine doctors in New Mexico →

Other internal medicine doctors in Gallup

Clinicians with the same Medicare primary specialty in Gallup, NM — not a recommendation.

All internal medicine doctors in Gallup →

Other clinicians in DHHS, PHS, Naihs, Gallup Indian Medical Center

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolWarren Alpert Medical School Of Brown University
Graduation year2007 (19 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1649479874
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians