Tammy Nguyen, D.O.
NPI 1699113829 · Family Medicine Physician · Santa Ana, CA
Tammy Nguyen, D.O. is a Family Medicine Physician provider in Santa Ana, CA (NPI 1699113829).
Provider details
- NPI number
- 1699113829
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 20A14644 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
13 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$160 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-10
- Last updated
- 2023-06-22
- Certified
- 2023-06-22
Frequently asked questions
- What is Tammy Nguyen's NPI number?
- Tammy Nguyen's National Provider Identifier (NPI) is 1699113829, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Nguyen's specialty?
- Tammy Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tammy Nguyen located?
- Tammy Nguyen's practice location on file with NPPES is 1421 E 17th St, Santa Ana, CA 92705-8505.
- What is Tammy Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Tammy Nguyen is (714) 254-2747.
- Is Tammy Nguyen's NPI active?
- Yes — Tammy Nguyen's NPI (1699113829) is active in the NPPES registry as of the last update on 2023-06-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.