Joseph Hwang, M.D.
NPI 1871767244 · Emergency Medicine Physician · Lancaster, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Hwang, M.D. is a Emergency Medicine Physician provider in Lancaster, CA (NPI 1871767244).
Provider details
- NPI number
- 1871767244
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A97997 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 27 | 27 |
| Ondansetronbrand: Ondansetron Odt | 16 | 14 |
| Omeprazole | 14 | — |
| Prednisone | 14 | 13 |
| Azithromycin | 12 | 12 |
| Cefadroxil | 11 | — |
| Cephalexin | 11 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-16
- Last updated
- 2021-12-06
- Certified
- 2021-12-06
Frequently asked questions
- What is Joseph Hwang's NPI number?
- Joseph Hwang's National Provider Identifier (NPI) is 1871767244, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Hwang's specialty?
- Joseph Hwang is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Hwang located?
- Joseph Hwang's practice location on file with NPPES is 43830 10th St W, Lancaster, CA 93534-4826.
- What is Joseph Hwang's phone number?
- The practice phone number listed in the NPPES registry for Joseph Hwang is (661) 948-4781.
- Does Joseph Hwang accept Medicare?
- Joseph Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Hwang's NPI active?
- Yes — Joseph Hwang's NPI (1871767244) is active in the NPPES registry as of the last update on 2021-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.