Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Joleen M Aguon, MD

Individual provider Internal Medicine Physician · NPI 1730483223

Joleen M Aguon, MD is registered under Pulmonary Disease in Tamuning, Guam. Graduated from University of Hawaii John A. Burns School of Medicine in 2009, 17 years ago. Practices with Guam Healthcare Development Incorporated, a 209-clinician group and accepts Medicare assignment. Licensed in California and Guam.

Years since qualifying
17
Trained at
University of Hawaii John A. Burns School of Medicine
Licensed in
CA, GU
In the registry since
2010
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address may be wrong

The ZIP code does not match the city and state on this record. Call before visiting.

458 S Marine Corps Dr Unit WH-3
Tamuning, GU 96913-3801
Phone: (671) 686-5864
Fax: (833) 468-5107

No coordinates on file. Search this address in Google Maps

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence M1891 (GU)
Internal Medicine Physician Taxonomy 207R00000X · Licence A114729 (CA)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence M1891 (GU)

Record details

NPI number1730483223
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedDecember 27, 2010
Last updated in NPPESMay 29, 2026
Certification dateMay 29, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolUNIVERSITY OF HAWAII JOHN A. BURNS SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice Guam Healthcare Development Incorporated — 209 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients193
Services billed 841 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $192 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Guam Healthcare Development Incorporated

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 209 clinicians in the practice; 12 are shown here.

Other providers in Tamuning