Mariana L.g. Cook-Huynh, MD
Family Medicine Physician · Tamuning, GU
Mariana L.g. Cook-Huynh, MD is a family medicine physician with a practice address in Tamuning, Guam, and NPI 1821356247, issued on Apr 24, 2012. Check the license (Guam M1970, as entered in NPPES) with the Guam board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mariana L.g. Cook-Huynh
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- M1970 GU
Self-reported in NPPES; status is on the state search - Practice location
- 744 N Marine Corps Dr Ste 121, Tamuning, GU 96913
- Phone
- (671) 588-2394
- Enumerated
- Apr 24, 2012
- Record last updated
- Oct 12, 2025
- Medicare enrollment
- Enrolled (PECOS I20160921002633); accepts Medicare assignment
- Medical or professional school
- Mayo Medical School, 2012
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 46 in Guam → Look up another NPI →
Also registered at 744 N Marine Corps Dr Ste 121
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelli Jarrett, MDFamily Medicine Physician1144665316
- Sheri Tackett, APRN-CNPFamily Nurse Practitioner1477855468
Verify Mariana L.g. Cook-Huynh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Guam board licenses this profession
Search for license M1970Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average family medicine physician in 2024
13 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Famalaoan Wellness CenterTamuning, GU
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mariana L.g. Cook-Huynh among 46 family medicine physician records in Guam
Mariana L.g. Cook-Huynh, MD is one of 46 family medicine physician records with a practice address in Guam. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 50% of them.
- NPI issued2012 · 50% of these records are older, 41% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated2012 · median 2007 among the 24 with a school on file
- Record last updated2025 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Guam practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
22 family medicine physician records list a practice address in Tamuning
They are 22 of the 411 NPPES records with a practice address in Tamuning, and 46 family medicine physician records in Guam.
All 46 in Guam → Every provider in Tamuning → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Vincent Akimoto, MDUpper Tumon, GU 969131396871919
- Ugochukwu Akoma, M.D.Tamuning, GU 969131417157397
- Mary Beckett, MDTamuning, GU 969131669443024
- Jitka Lom, M.D.Tamuning, GU 969131790754679
- Gemma Mercado, M.D.Tamuning, GU 969131992844583
- Shishin Miyagi, M.DTamuning, GU 969131912226713
- Julie Namm, M.D.Tamuning, GU 969131740515030
- Hoa Nguyen, MDUpper Tumon, GU 969131215086152
Common questions
What is Mariana L.g. Cook-Huynh, MD's NPI number?
Mariana L.g. Cook-Huynh, MD's National Provider Identifier (NPI) is 1821356247, issued on Apr 24, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mariana L.g. Cook-Huynh, MD located?
The NPPES record lists a practice address at 744 N Marine Corps Dr Ste 121, Tamuning, GU, 96913. Phone: (671) 588-2394. Providers update this record themselves, so call before visiting.
How can I verify Mariana L.g. Cook-Huynh, MD's license?
NPPES lists Guam license number M1970, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.
How much does Mariana L.g. Cook-Huynh, MD prescribe under Medicare Part D?
In 2024, Mariana L.g. Cook-Huynh, MD had 13 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.