Quoc Nguyen, M.D.
NPI 1114173440 · Family Medicine Physician · Rockville, MD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Quoc Nguyen, M.D. is a Family Medicine Physician provider in Rockville, MD (NPI 1114173440).
Provider details
- NPI number
- 1114173440
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MC00048734 (WA)
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
17 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
1,027 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 | 245 | $121 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 117 | $99 |
| Detection Test By Immunoassay Technique for Influenza Virus87400 | 112 | $14 |
| Advance Care Planning, First 30 Minutes99497 | 87 | $89 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 83 | $41 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 54 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 212 | 70 |
| Amlodipine Besylate | 137 | 47 |
| Levothyroxine Sodium | 84 | 24 |
| Montelukast Sodium | 83 | 51 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 80 | 67 |
| Methylprednisolone | 77 | 72 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$114 across 5 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
- 2008-08-18
- Last updated
- 2020-07-21
- Certified
- 2020-07-21
Frequently asked questions
- What is Quoc Nguyen's NPI number?
- Quoc Nguyen's National Provider Identifier (NPI) is 1114173440, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Quoc Nguyen's specialty?
- Quoc Nguyen is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Quoc Nguyen located?
- Quoc Nguyen's practice location on file with NPPES is 726 Rockville Pike, Rockville, MD 20852-1133.
- What is Quoc Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Quoc Nguyen is (240) 238-0411.
- Does Quoc Nguyen accept Medicare?
- Quoc Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Quoc Nguyen's NPI active?
- Yes — Quoc Nguyen's NPI (1114173440) is active in the NPPES registry as of the last update on 2020-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.