Terry Nguyen, D.O
NPI 1649684465 · Family Medicine Physician · Washington, DC
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Terry Nguyen, D.O is a Family Medicine Physician provider in Washington, DC (NPI 1649684465).
Provider details
- NPI number
- 1649684465
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0116027094 (VA)
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 tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
52 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) |
|---|---|---|
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 39 | $3 |
| Hemoglobin A1c Level83036 | 13 | $10 |
Typical Medicare-allowed amounts for these services range $3–$10 (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 · 70 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 235 | 77 |
| Amlodipine Besylate | 194 | 63 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 131 | 35 |
| Losartan Potassium | 121 | 32 |
| Lisinopril | 100 | 30 |
| Hydrochlorothiazide | 91 | 26 |
| Fluticasone Propionate |
Practice location
Mailing address
Additional practice locations (1)
- 3650 Joseph Siewick Dr Ste 400Fairfax, VA 22033-1715Phone: (703) 391-2020
Registry dates
- Enumerated
- 2014-06-19
- Last updated
- 2018-03-17
Frequently asked questions
- What is Terry Nguyen's NPI number?
- Terry Nguyen's National Provider Identifier (NPI) is 1649684465, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Terry Nguyen's specialty?
- Terry Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Terry Nguyen located?
- Terry Nguyen's practice location on file with NPPES is 1500 Galen St Se, Washington, DC 20020-4913.
- What is Terry Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Terry Nguyen is (202) 610-7160.
- Does Terry Nguyen accept Medicare?
- Terry Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Terry Nguyen's NPI active?
- Yes — Terry Nguyen's NPI (1649684465) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.