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Family Practice

Mariana L. Cook-Huynh, MD

Sees patients in Tamuning, GU · Guam

Summary

Dr. Mariana L. Cook-Huynh, MD is a family doctor at 744 N Marine Corps Dr, Suite 121, Tamuning, GU 96913. Phone: (671) 588-2394. Accepts Medicare assignment. NPI 1821356247. Source: CMS National Downloadable File, updated October 2, 2026.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 744 N Marine Corps Dr, Suite 121, Tamuning, GU 96913 · Directions
  • Phone: (671) 588‑2394
  • Medicare: Accepts Medicare assignment
  • Group practice: Famalaoan Wellness Center
  • Medical school: Mayo Medical School · graduated 2012 (14 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Mariana L. Cook-Huynh, 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 Mariana L. Cook-Huynh accept Medicare assignment?
Yes. Medicare's clinician data says Mariana L. Cook-Huynh 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.
What is Mariana L. Cook-Huynh's NPI number?
1821356247. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Mariana L. Cook-Huynh is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Mariana L. Cook-Huynh as a member of this group (CMS data updated October 2, 2026).

  • Famalaoan Wellness Center2 clinicians in the group

Specialties

Find other Family Practice doctors in Guam →

Other family doctors in Tamuning

Clinicians with the same Medicare primary specialty in Tamuning, GU — not a recommendation.

All family doctors in Tamuning →

Other clinicians in Famalaoan Wellness Center

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

Clinician information

CredentialMD
Medical schoolMayo Medical School
Graduation year2012 (14 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1821356247
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians