JOLEEN M AGUON M.D.
NPI 1730483223
Internal Medicine - Pulmonary Disease in Tamuning, GU

Q: What is Joleen Aguon's NPI number?

The NPI number for Joleen Aguon is 1730483223. It was assigned to this individual provider in the NPPES registry on December 27, 2010.

Q: What is Joleen Aguon's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Q: When was this NPI record last updated?

The NPPES record for Joleen Aguon was last updated on May 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since December 27, 2010PECOS EnrolledAccepts Medicare Assignment

458 S MARINE CORPS DR UNIT WH-3, TAMUNING, GU 96913(671) 686-5864(833) 468-5107 Get Directions Write a Review

NPPES record last updated: May 29, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 29, 2026, Nov 17, 2016, Nov 17, 2015 and 1 more (4 updates tracked since 2015).

On this page

About Joleen M Aguon M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOLEEN M AGUON M.D. (NPI 1730483223) is an individual pulmonary disease provider in Tamuning, Guam, licensed in Guam (M1891) and active in the NPI registry since December 2010. She is enrolled in Medicare PECOS, is affiliated with Guam Memorial Hospital Authority, and is a graduate of University Of Hawaii John A. Burns School Of Medicine (2009).

NPPES Registry Identity

NPI1730483223

Entity TypeIndividualFemale

Primary Taxonomy207RP1001X

Provider Legal NameJOLEEN M AGUONCredential: M.D.

Location Address458 S MARINE CORPS DR UNIT WH-3Tamuning, GU 96913-3801

Mailing Address458 S Marine Corps Dr Unit Wh-3Tamuning, GU 96913-3801 · (671) 686-5864 · Fax (833) 468-5107

Phone(671) 686-5864

Fax(833) 468-5107

Sole ProprietorYes

Medical School CMSUniversity Of Hawaii John A. Burns School Of MedicineGraduated 2009

Enumeration DateDecember 27, 2010

Last NPPES UpdateMay 29, 20264 updates tracked since enumeration

NPPES CertifiedMay 29, 2026

✔ NPI 1730483223 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in GU · M1891

Definition

An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

Also ListedInternal MedicineTaxonomy 207R00000X · License A114729 (CA)

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License M1891 (GU)

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Joleen M Aguon M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092025213

PECOS Enrollment IDI20151030000178

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Joleen Aguon reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

American Medical Center, LLC

Urgent Care

1244 NORTH MARINE CORPS DRIVE
Upper Tumon, GU 96913

Reassigned Medicare billing, Guam enrollment
31 clinicians in this Medicare group

NPI 1457329849 (671) 647-8262

Guam Healthcare Development Incorporated

Clinic/Center

133 ROUTE 3
Dededo, GU 96929

Reassigned Medicare billing, Guam enrollment
432 clinicians in this Medicare group

NPI 1326447939 (671) 645-5500

Guam Memorial Hospital

General Acute Care Hospital

850 GOVERNOR CARLOS CAMACHO ROAD
Oka Tamuning, GU 96913

Reassigned Medicare billing, Guam enrollment
320 clinicians in this Medicare group

NPI 1366519027 (671) 647-2937

Hafa Specialist Group LLP

Specialist

280 PALE SAN VITORES RD
Tamuning, GU 96913

Reassigned Medicare billing, Guam enrollment
20 clinicians in this Medicare group

NPI 1235141060 (671) 647-4542

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 14

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

233 services103 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

82 services57 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

67 services67 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

57 services49 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

52 services30 patients

Test to determine lung volumes using gas dilution or washout 94727

This test measures lung volumes by either diluting or washing out a known amount of gas in your lungs. You'll breathe in a harmless gas, then exhale. The exhaled air is analyzed to assess your lung capacity and function.

49 services49 patients

Test to measure rate of airflow 94375

This test, known as spirometry, measures how much air you can breathe in and out, and how quickly you can do so. It helps assess your lung function and can be used to diagnose or monitor conditions like asthma or COPD.

48 services48 patients

Test for exercise-induced lung stress 94618

An exercise-induced lung stress test assesses how your lungs respond to physical activity. During the test, you'll exercise on a treadmill or stationary bike while your heart rate, breathing, blood pressure, and oxygen levels are monitored. This helps identify any abnormal lung responses to exercise.

47 services46 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

45 services45 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

36 services13 patients

Critical care, each additional 30 minutes 99292

Critical care refers to special attention given to patients facing life-threatening conditions. Each additional 30 minutes indicates the extension of this specialized care. This might include close monitoring, medication adjustments, and immediate interventions as needed.

32 services13 patients

Irrigation and suction of lung airways to obtain cells using an endoscope 31624

This is a procedure where a thin, flexible tube called an endoscope is inserted through your mouth into the lungs. A small amount of saline is then introduced to wash the airways. The fluid, along with cells from the lung, is suctioned back for analysis.

21 services21 patients

Aspiration of initial secretion of lung airway using an endoscope 31645

This procedure involves using a thin, flexible tube called an endoscope to collect initial secretions from your lung airway. This helps doctors diagnose and treat respiratory conditions. It's a safe, minimally invasive procedure.

21 services20 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

18 services14 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Guam Memorial Hospital Authority

Acute Care Hospitals · Tamuning, GU

2/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number650001

Location85O Gov Carlos G Camacho RoadTamuning, GU 96913 · Guam County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96913 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$136.68 typical visit price

range $60.53 – $180.05

Typical copayment $34.17 (range $15.13 – $45.01)

Most-billed visit code 99204

Established Patient

$105.65 typical visit price

range $20.09 – $147.56

Typical copayment $26.41 (range $5.02 – $36.89)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier14 claims14 services$19.72 avg. paid by Medicare

Portable oxygen contents, gaseous, 1 month's supply = 1 unit E0443

DME-Oxygen and Supplies · category DC000N

1 supplier12 claims12 services$37.25 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier25 claims25 services$105.51 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GUAHAN SPECIALTY AND WELLNESS CENTER, LLC

Internal Medicine (Gastroenterology)

458 S MARINE CORPS DR UNIT WH-3
TAMUNING, GU 96913

Guam (671) 686-5864

TIA MUNA AGUON

Doula

458 S MARINE CORPS DR UNIT WH-3
TAMUNING, GU 96913

Guam (671) 922-3343

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Joleen Aguon's NPI number?

The NPI number for Joleen Aguon is 1730483223. It was assigned to this individual provider in the NPPES registry on December 27, 2010.

Where is Joleen Aguon located?

Joleen Aguon practices at 458 S Marine Corps Dr Unit Wh-3, Tamuning, GU 96913. The listed phone number is (671) 686-5864.

What is Joleen Aguon's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Joleen Aguon enrolled in Medicare?

Yes. Joleen Aguon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Joleen Aguon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joleen Aguon reassigns Medicare benefits to 4 organizations: American Medical Center, LLC (Upper Tumon, GU), Guam Healthcare Development Incorporated (Dededo, GU), Guam Memorial Hospital (Oka Tamuning, GU) and Hafa Specialist Group LLP (Tamuning, GU). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joleen Aguon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Joleen Aguon affiliated with any hospitals?

According to CMS data, Joleen Aguon is affiliated with Guam Memorial Hospital Authority.

When was this NPI record last updated?

The NPPES record for Joleen Aguon was last updated on May 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.