Don Nguyen, D.O.
NPI 1356311427 · Internal Medicine Physician · Folsom, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Don Nguyen, D.O. is a Internal Medicine Physician provider in Folsom, CA (NPI 1356311427).
Provider details
- NPI number
- 1356311427
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A12423 (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
20 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
2,327 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,175 | $97 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 506 | $17 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 243 | $76 |
| Administration of Influenza Virus VaccineG0008 | 99 | $34 |
| Automated Urinalysis Test81003 | 60 | $2 |
| Telephone Medical Discussion With Physician, 21-30 Minutes |
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 | 641 | 193 |
| Amlodipine Besylate | 360 | 120 |
| Losartan Potassium | 313 | 94 |
| Levothyroxine Sodium | 281 | 82 |
| Rosuvastatin Calcium | 276 | 89 |
| Tamsulosin Hcl | 252 | 70 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$25 across 1 record (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
- 2006-01-23
- Last updated
- 2020-06-10
- Certified
- 2020-06-10
Frequently asked questions
- What is Don Nguyen's NPI number?
- Don Nguyen's National Provider Identifier (NPI) is 1356311427, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Don Nguyen's specialty?
- Don Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Don Nguyen located?
- Don Nguyen's practice location on file with NPPES is 271 Turn Pike Dr, Folsom, CA 95630-8149.
- What is Don Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Don Nguyen is (916) 985-9300.
- Does Don Nguyen accept Medicare?
- Don Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Don Nguyen's NPI active?
- Yes — Don Nguyen's NPI (1356311427) is active in the NPPES registry as of the last update on 2020-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.