Theresa Thanh Ngoc Nguyen, MD, Inc.
NPI 1750667192 · Internal Medicine Physician · Westminster, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Thanh Ngoc Nguyen, MD, Inc. is a Internal Medicine Physician organization in Westminster, CA (NPI 1750667192).
Provider details
- NPI number
- 1750667192
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Thanh Nguyen, Owner(714) 775-8090
- License
- A61129 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
- 2011-10-31
- Last updated
- 2016-07-08
Frequently asked questions
- What is Theresa Thanh Ngoc Nguyen, MD, Inc.'s NPI number?
- Theresa Thanh Ngoc Nguyen, MD, Inc.'s National Provider Identifier (NPI) is 1750667192, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Theresa Thanh Ngoc Nguyen, MD, Inc.?
- Theresa Thanh Ngoc Nguyen, MD, Inc. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Theresa Thanh Ngoc Nguyen, MD, Inc. located?
- Theresa Thanh Ngoc Nguyen, MD, Inc.'s practice location on file with NPPES is 15576 Brookhurst St Ste B, Westminster, CA 92683-7586.
- What is Theresa Thanh Ngoc Nguyen, MD, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Theresa Thanh Ngoc Nguyen, MD, Inc. is (714) 775-8090.
- Does Theresa Thanh Ngoc Nguyen, MD, Inc. accept Medicare?
- Theresa Thanh Ngoc Nguyen, MD, Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Theresa Thanh Ngoc Nguyen, MD, Inc.?
- The authorized official listed on Theresa Thanh Ngoc Nguyen, MD, Inc.'s NPPES record is Thanh Nguyen, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Theresa Thanh Ngoc Nguyen, MD, Inc.'s NPI active?
- Yes — Theresa Thanh Ngoc Nguyen, MD, Inc.'s NPI (1750667192) is active in the NPPES registry as of the last update on 2016-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.