Duc Nguyen, DO
NPI 1275565814 · Internal Medicine Physician · Portland, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Duc Nguyen, DO is a Internal Medicine Physician provider in Portland, OR (NPI 1275565814).
Provider details
- NPI number
- 1275565814
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- D024751 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
710 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 308 | $131 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 145 | $91 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 73 | $133 |
| Automated Urinalysis Test81003 | 42 | $2 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 39 | $15 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 76 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 274 | 80 |
| Losartan Potassium | 138 | 40 |
| Metoprolol Succinate | 126 | 33 |
| Amlodipine Besylate | 126 | 35 |
| Tamsulosin Hcl | 105 | 29 |
| Prednisone | 89 | 82 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2014-10-13
Frequently asked questions
- What is Duc Nguyen's NPI number?
- Duc Nguyen's National Provider Identifier (NPI) is 1275565814, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Duc Nguyen's specialty?
- Duc Nguyen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Duc Nguyen located?
- Duc Nguyen's practice location on file with NPPES is 10200 Sw Eastridge St, Portland, OR 97225-5064.
- What is Duc Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Duc Nguyen is (503) 280-4555.
- Does Duc Nguyen accept Medicare?
- Duc Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Duc Nguyen's NPI active?
- Yes — Duc Nguyen's NPI (1275565814) is active in the NPPES registry as of the last update on 2014-10-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.