Rachel Nguyen, MD
NPI 1932542750 · Psychiatry Physician · San Marcos, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachel Nguyen, MD is a Psychiatry Physician provider in San Marcos, CA (NPI 1932542750).
Provider details
- NPI number
- 1932542750
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A134079 (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
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 44 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 243 | 72 |
| Trazodone Hcl | 230 | 90 |
| Sertraline Hcl | 217 | 81 |
| Duloxetine Hcl | 154 | 63 |
| Alprazolam | 147 | 41 |
| Clonazepam | 143 | 30 |
| Bupropion Hclbrand: Bupropion Xl |
Practice location
Mailing address
Additional practice locations (1)
- 1710 Barton RdRedlands, CA 92373-5304Phone: (909) 558-9200
Registry dates
- Enumerated
- 2013-04-10
- Last updated
- 2022-07-21
Frequently asked questions
- What is Rachel Nguyen's NPI number?
- Rachel Nguyen's National Provider Identifier (NPI) is 1932542750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachel Nguyen's specialty?
- Rachel Nguyen is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Rachel Nguyen located?
- Rachel Nguyen's practice location on file with NPPES is 300 Rancheros Dr Ste 130, San Marcos, CA 92069-2968.
- What is Rachel Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Rachel Nguyen is (858) 279-1223.
- Does Rachel Nguyen accept Medicare?
- Rachel Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachel Nguyen's NPI active?
- Yes — Rachel Nguyen's NPI (1932542750) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.