Fernan F. De Guzman, M.D.
Specialist · Tamuning, GU
Fernan F. De Guzman, M.D. is a specialist with a practice address in Tamuning, Guam, and NPI 1669434254, issued on Apr 6, 2006. Check the license with the Guam board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Fernan F. De Guzman
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- Practice location
- 548 South Marine Corps Drive, Tamuning, GU 96913
- Phone
- (671) 646-5824
- Enumerated
- Apr 6, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (671) 647-3546
- Medicare enrollment
- Enrolled (PECOS I20170905003116); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest specialist records → All 10 in Guam → Look up another NPI →
Also registered at 548 South Marine Corps Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Troadio Castro, M.D.Radiography Radiologic Technologist1598726820
- Angela Cooey, PA-CPhysician Assistant1942262530
- Cathleen Distor, CNMAdvanced Practice Midwife1275646853
- James Fleming, M.D.Specialist1336100601
- Sanjay Kamath, MDDiagnostic Radiology Physician1700801537
- Karyn Kaufman, PA-CPhysician Assistant1427010024
Verify Fernan F. De Guzman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Guam board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Guam Memorial HospitalTamuning, GU
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Fernan F. De Guzman among 10 specialist records in Guam
Fernan F. De Guzman, M.D. is one of 10 specialist records with a practice address in Guam. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 0% of them.
- NPI issued2006 · 0% of these records are older, 20% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Guam practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 specialist records list a practice address in Tamuning
They are 10 of the 411 NPPES records with a practice address in Tamuning, and 10 specialist records in Guam.
All 10 in Guam → Every provider in Tamuning → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Maria Blancaflor, M.D.Tamuning, GU 969131346316825
- James Fleming, M.D.Tamuning, GU 969131336100601
- Geoffrey Galgo, DOCTOR OF MEDICINETamuning, GU 969131437379575
- Robert Leon Guerrero, M.D.Tamuning, GU 969131972564219
- Edgar Magcalas, M.D.Tamuning, GU 969131578525168
- Faraz Ouhadi, M.D.Tamuning, GU 969131063517639
- Sherif Philips, MDTamuning, GU 969131487731733
- Maria Edna Santos, M.D.Tamuning, GU 969131164484754
Common questions
What is Fernan F. De Guzman, M.D.'s NPI number?
Fernan F. De Guzman, M.D.'s National Provider Identifier (NPI) is 1669434254, issued on Apr 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Fernan F. De Guzman, M.D. located?
The NPPES record lists a practice address at 548 South Marine Corps Drive, Tamuning, GU, 96913. Phone: (671) 646-5824. Providers update this record themselves, so call before visiting.
How can I verify Fernan F. De Guzman, M.D.'s license?
Search the Guam board that licenses this profession; the NPPES record confirms identity only.
What is Fernan F. De Guzman, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.