Irving Hwang, MD
NPI 1225015175 · Family Medicine Physician · Chantilly, VA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irving Hwang, MD is a Family Medicine Physician provider in Chantilly, VA (NPI 1225015175).
Provider details
- NPI number
- 1225015175
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 0101227639 (VA)
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
20 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
652 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 | 369 | $123 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 115 | $125 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 55 | $88 |
| Hemoglobin A1c Level83036 | 35 | $10 |
| Administration of Influenza Virus VaccineG0008 | 25 | $31 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 283 | 80 |
| Levothyroxine Sodium | 104 | 24 |
| Amlodipine Besylate | 100 | 27 |
| Lisinopril | 91 | 26 |
| Metformin Hcl | 85 | 24 |
| Losartan Potassium | 77 | 22 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-30
- Last updated
- 2023-11-27
- Certified
- 2020-10-16
Frequently asked questions
- What is Irving Hwang's NPI number?
- Irving Hwang's National Provider Identifier (NPI) is 1225015175, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irving Hwang's specialty?
- Irving Hwang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Irving Hwang located?
- Irving Hwang's practice location on file with NPPES is 4080 Lafayette Center Drive, Chantilly, VA 20151.
- What is Irving Hwang's phone number?
- The practice phone number listed in the NPPES registry for Irving Hwang is (703) 766-5040.
- Does Irving Hwang accept Medicare?
- Irving Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irving Hwang's NPI active?
- Yes — Irving Hwang's NPI (1225015175) is active in the NPPES registry as of the last update on 2023-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.