Robert Nguyen, M.D., M.P.H.
NPI 1255717823 · Hospice and Palliative Medicine (Internal Medicine) Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Nguyen, M.D., M.P.H. is a Hospice and Palliative Medicine (Internal Medicine) Physician provider in Irvine, CA (NPI 1255717823).
Provider details
- NPI number
- 1255717823
- Entity type
- Individual
- Primary specialty
- Hospice and Palliative Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.P.H.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A156371 (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
10 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Levothyroxine Sodium | 23 |
| Pantoprazole Sodium | 17 |
| Gabapentin | 17 |
| Furosemide | 16 |
| Metoprolol Succinate | 13 |
| Midodrine Hcl | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-08-06
- Last updated
- 2023-01-11
- Certified
- 2023-01-11
Frequently asked questions
- What is Robert Nguyen's NPI number?
- Robert Nguyen's National Provider Identifier (NPI) is 1255717823, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Nguyen's specialty?
- Robert Nguyen is listed in the NPPES registry with a primary specialty of Hospice and Palliative Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Nguyen located?
- Robert Nguyen's practice location on file with NPPES is 310 Commerce Ste 200, Irvine, CA 92602.
- What is Robert Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Robert Nguyen is (714) 921-2273.
- Does Robert Nguyen accept Medicare?
- Robert Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Nguyen's NPI active?
- Yes — Robert Nguyen's NPI (1255717823) is active in the NPPES registry as of the last update on 2023-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.