Fernan De Guzman, M.D.
NPI 1669434254 · Specialist · Tamuning, GU
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fernan De Guzman, M.D. is a Specialist provider in Tamuning, GU (NPI 1669434254).
Provider details
- NPI number
- 1669434254
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Fernan De Guzman's NPI number?
- Fernan De Guzman's National Provider Identifier (NPI) is 1669434254, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fernan De Guzman's specialty?
- Fernan De Guzman is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Fernan De Guzman located?
- Fernan De Guzman's practice location on file with NPPES is 548 South Marine Corps Drive, Tamuning, GU 96913.
- What is Fernan De Guzman's phone number?
- The practice phone number listed in the NPPES registry for Fernan De Guzman is (671) 646-5824.
- Does Fernan De Guzman accept Medicare?
- Fernan De Guzman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fernan De Guzman's NPI active?
- Yes — Fernan De Guzman's NPI (1669434254) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.