Monica Hwang, M.D.
NPI 1629480454 · Family Medicine Physician · Herndon, VA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Monica Hwang, M.D. is a Family Medicine Physician provider in Herndon, VA (NPI 1629480454).
Provider details
- NPI number
- 1629480454
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 0116026790 (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
12 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
198 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 | 139 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 35 | $99 |
| Administration of Influenza Virus VaccineG0008 | 13 | $36 |
| Annual Wellness Visit; Includes a Personalized Prevention Plan of Service (pps), Initial VisitG0438 | 11 | $181 |
Typical Medicare-allowed amounts for these services range $36–$181 (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 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 142 | 51 |
| Amlodipine Besylate | 70 | 26 |
| Levothyroxine Sodium | 58 | 21 |
| Rosuvastatin Calcium | 53 | 20 |
| Losartan Potassium | 43 | 13 |
| Lisinopril | 39 | 14 |
| Hydrochlorothiazide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-05-28
- Last updated
- 2023-11-27
- Certified
- 2020-10-16
Frequently asked questions
- What is Monica Hwang's NPI number?
- Monica Hwang's National Provider Identifier (NPI) is 1629480454, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Monica Hwang's specialty?
- Monica Hwang is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Monica Hwang located?
- Monica Hwang's practice location on file with NPPES is 381 Elden St Ste 1000, Herndon, VA 20170-4842.
- What is Monica Hwang's phone number?
- The practice phone number listed in the NPPES registry for Monica Hwang is (703) 481-1505.
- Does Monica Hwang accept Medicare?
- Monica Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Monica Hwang's NPI active?
- Yes — Monica Hwang's NPI (1629480454) 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.