James Hwang, M.D.
NPI 1134489446 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Hwang, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1134489446).
Provider details
- NPI number
- 1134489446
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036138423 (IL)
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
14 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 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 131 | 42 |
| Amlodipine Besylate | 81 | 28 |
| Losartan Potassium | 49 | 13 |
| Semaglutidebrand: Ozempic | 43 | — |
| Lisinopril | 40 | 15 |
| Nifedipinebrand: Nifedipine Er | 33 | — |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-05-21
- Last updated
- 2016-02-05
Frequently asked questions
- What is James Hwang's NPI number?
- James Hwang's National Provider Identifier (NPI) is 1134489446, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Hwang's specialty?
- James Hwang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Hwang located?
- James Hwang's practice location on file with NPPES is 3517 W Arthington St, Chicago, IL 60624-4165.
- What is James Hwang's phone number?
- The practice phone number listed in the NPPES registry for James Hwang is (872) 588-3510.
- Does James Hwang accept Medicare?
- James Hwang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Hwang's NPI active?
- Yes — James Hwang's NPI (1134489446) is active in the NPPES registry as of the last update on 2016-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.