Diana Nguyen, M.D.
NPI 1710340492 · Internal Medicine Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Nguyen, M.D. is a Internal Medicine Physician provider in Sacramento, CA (NPI 1710340492).
Provider details
- NPI number
- 1710340492
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A152491 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
471 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 255 | $80 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 93 | $120 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 36 | $175 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 36 | $117 |
| Prolonged Hospital Inpatient Or Observation Care Evaluation and Management Service(s) Beyond the Total Time for the Primary Service (when the Primary Service Has Been Selected Using Time on the Date of the Primary Service); Each Additional 15 Minutes By ThG0316 | 30 | $31 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$276 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
Additional practice locations (1)
- 4150 V St#1100Sacramento, CA 95817-1460Phone: (916) 734-2737
Registry dates
- Enumerated
- 2016-03-31
- Last updated
- 2019-08-15
Frequently asked questions
- What is Diana Nguyen's NPI number?
- Diana Nguyen's National Provider Identifier (NPI) is 1710340492, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Nguyen's specialty?
- Diana Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Nguyen located?
- Diana Nguyen's practice location on file with NPPES is 4150 V St Ste 3400, Sacramento, CA 95817-1460.
- What is Diana Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Diana Nguyen is (916) 734-7587.
- Does Diana Nguyen accept Medicare?
- Diana Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Nguyen's NPI active?
- Yes — Diana Nguyen's NPI (1710340492) is active in the NPPES registry as of the last update on 2019-08-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.