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DR. SELWYN E. MAHON M.D.
NPI 1992816169
Emergency Medicine in Tamuning, GU

Active since August 31, 2006PECOS EnrolledAccepts Medicare Assignment
850 GOV. CARLOS CAMACHO ROAD, GUAM MEMORIAL HOSPITAL AUTHORITY, TAMUNING, GU 96913(671) 647-2350 Get Directions Write a Review

NPPES record last updated: March 23, 2016. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Selwyn E. Mahon M.d. NPPES

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

DR. SELWYN E. MAHON M.D. (NPI 1992816169) is an individual emergency medicine provider in Tamuning, Guam, licensed in Virgin Islands (1119) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Md Shore Medical Ctr At Chestertown, and is a graduate of Howard University College Of Medicine (1990).

NPPES Registry Identity

NPI1992816169
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. SELWYN E. MAHONCredential: M.D.
Location Address850 GOV. CARLOS CAMACHO ROAD, GUAM MEMORIAL HOSPITAL AUTHORITYTamuning, GU 96913
Mailing Address6603 Evanston St.Forestville, MD 20747 · (301) 633-8820
Phone(671) 647-2350
Sole ProprietorNo
Medical School CMSHoward University College Of MedicineGraduated 1990
Enumeration DateAugust 31, 2006
Last NPPES UpdateMarch 23, 2016
✔ NPI 1992816169 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in VI · 1119
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
850 GOV. CARLOS CAMACHO ROAD, Tamuning, GU 96913
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Other Identifiers 1

Medicare UPINF76713VI

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Selwyn E. Mahon 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 ID4385628692
PECOS Enrollment IDI20260214000022
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.

Areas of Expertise CMS Part B claims 3

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.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
89 services87 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
56 services56 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
23 services23 patients

Hospital Affiliations CMS Care Compare

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

University Of MD Shore Medical Ctr At Chestertown

Acute Care Hospitals · Chestertown, MD
OwnershipVoluntary non-profit - Private
CMS Certification Number210030
Location100 Brown StreetChestertown, MD 21620 · Kent 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
$92.50 typical visit price
range $60.53 – $180.05
Typical copayment $23.12 (range $15.13 – $45.01)
Most-billed visit code 99203
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.

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.

KRISTY JOY QUIROS MARY RDN, LD
Dietitian, Registered
850 GOV. CARLOS CAMACHO ROAD
TAMUNING, GU 96913
Guam (671) 647-2179
DR. REYNALD TE LIM M.D.
Anesthesiology
850 GOV. CARLOS CAMACHO ROAD
TAMUNING, GU 96913
Guam (671) 649-2370

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 Selwyn Mahon's NPI number?

The NPI number for Selwyn Mahon is 1992816169. It was assigned to this individual provider in the NPPES registry on August 31, 2006.

Where is Selwyn Mahon located?

Selwyn Mahon practices at 850 Gov. Carlos Camacho Road Guam Memorial Hospital Authority, Tamuning, GU 96913. The listed phone number is (671) 647-2350.

What is Selwyn Mahon's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Selwyn Mahon enrolled in Medicare?

Yes. Selwyn Mahon 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.

Is Selwyn Mahon affiliated with any hospitals?

According to CMS data, Selwyn Mahon is affiliated with University Of MD Shore Medical Ctr At Chestertown.

When was this NPI record last updated?

The NPPES record for Selwyn Mahon was last updated on March 23, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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.