David Nguyen, D.O.
NPI 1316017353 · Internal Medicine Physician · Rosemead, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Nguyen, D.O. is a Internal Medicine Physician provider in Rosemead, CA (NPI 1316017353).
Provider details
- NPI number
- 1316017353
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A6867 (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 tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,906 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,190 | $95 |
| Urinalysis, Manual Test81002 | 352 | $3 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 174 | $59 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 112 | $3 |
| Insertion of Needle Into Vein (3 Years Or Older)36410 | 78 | $19 |
Typical Medicare-allowed amounts for these services range $3–$95 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 100 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 598 | 112 |
| Amlodipine Besylate | 396 | 88 |
| Omeprazole | 306 | 69 |
| Alendronate Sodium | 287 | 62 |
| Celecoxib | 221 | 50 |
| Amoxicillin | 221 | 116 |
| Metformin Hcl | 205 | 45 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$41 across 2 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
- 2006-11-08
- Last updated
- 2012-04-18
Frequently asked questions
- What is David Nguyen's NPI number?
- David Nguyen's National Provider Identifier (NPI) is 1316017353, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Nguyen's specialty?
- David Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Nguyen located?
- David Nguyen's practice location on file with NPPES is 9246 Valley Blvd, Rosemead, CA 91770-1922.
- What is David Nguyen's phone number?
- The practice phone number listed in the NPPES registry for David Nguyen is (626) 641-2119.
- Does David Nguyen accept Medicare?
- David Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Nguyen's NPI active?
- Yes — David Nguyen's NPI (1316017353) is active in the NPPES registry as of the last update on 2012-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.