Mark Nguyen, ED.D. PSY.D.
NPI 1487288619 · Psychologist · Garden Grove, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Nguyen, ED.D. PSY.D. is a Psychologist provider in Garden Grove, CA (NPI 1487288619).
Provider details
- NPI number
- 1487288619
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- ED.D. PSY.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 220233393 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% 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
- 2020-02-26
- Last updated
- 2026-02-11
- Certified
- 2026-02-11
Frequently asked questions
- What is Mark Nguyen's NPI number?
- Mark Nguyen's National Provider Identifier (NPI) is 1487288619, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Nguyen's specialty?
- Mark Nguyen is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Nguyen located?
- Mark Nguyen's practice location on file with NPPES is 14152 Bowen St, Garden Grove, CA 92843-4803.
- What is Mark Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Mark Nguyen is (714) 724-5722.
- Does Mark Nguyen accept Medicare?
- Mark Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Nguyen's NPI active?
- Yes — Mark Nguyen's NPI (1487288619) is active in the NPPES registry as of the last update on 2026-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.