Janet Whang, M.D.
NPI 1639369002 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Janet Whang, M.D. is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1639369002).
Provider details
- NPI number
- 1639369002
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A97042 (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 · 77 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 434 | 146 |
| Losartan Potassium | 317 | 95 |
| Amlodipine Besylate | 252 | 77 |
| Levothyroxine Sodium | 147 | 42 |
| Tamsulosin Hcl | 142 | 45 |
| Alendronate Sodium | 134 | 42 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-31
- Last updated
- 2022-02-11
Frequently asked questions
- What is Janet Whang's NPI number?
- Janet Whang's National Provider Identifier (NPI) is 1639369002, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janet Whang's specialty?
- Janet Whang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Janet Whang located?
- Janet Whang's practice location on file with NPPES is 2020 Zonal Ave Ste Ird624, Los Angeles, CA 90089-9520.
- What is Janet Whang's phone number?
- The practice phone number listed in the NPPES registry for Janet Whang is (323) 226-7644.
- Does Janet Whang accept Medicare?
- Janet Whang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Janet Whang's NPI active?
- Yes — Janet Whang's NPI (1639369002) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.