Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Eric William Spak, MD

Individual provider Diagnostic Radiology Physician · NPI 1053525170

Eric William Spak, MD practises Diagnostic Radiology in Tamuning, Guam. Graduated from Georgetown University School of Medicine in 1984, 42 years ago. Practices with Guam Healthcare Development Incorporated, a 209-clinician group and accepts Medicare assignment. Licensed in Guam.

Years since qualifying
42
Trained at
Georgetown University School of Medicine
Licensed in
GU
In the registry since
2007
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.

301 Frank H Cushing Way # 3A
Tamuning, GU 96913-4067
Phone: (671) 687-6544

No coordinates on file. Search this address in Google Maps

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence M1501 (GU)

Record details

NPI number1053525170
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 9, 2007
Last updated in NPPESFebruary 21, 2017

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Also practisesINTERVENTIONAL RADIOLOGY
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice Guam Healthcare Development Incorporated — 209 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of tissue 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

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 patients1,499
Services billed 8,294 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.

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