Janet Whang, M.D.
Internal Medicine Physician · Los Angeles, CA
Janet Whang, M.D. is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1639369002, issued on Jul 31, 2007. Check the license (California A97042, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Janet Whang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A97042 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2020 Zonal Ave Ste Ird624, Los Angeles, CA 90089
- Phone
- (323) 226-7644
- Enumerated
- Jul 31, 2007
- Record last updated
- Feb 11, 2022
- Medicare enrollment
- Enrolled (PECOS I20090518000430); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2020 Zonal Ave Ste Ird624
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Henry BergquistStudent in an Organized Health Care Education/Training Program1497286637
Verify Janet Whang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A97042Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% more Medicare Part D claims than the average internal medicine physician in 2024
4,603 Medicare Part D claims for 403 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 75 claims were for opioids.
Most prescribed
- Atorvastatin Calcium434 claims
- Losartan Potassium317 claims
- Amlodipine Besylate252 claims
- Levothyroxine Sodium147 claims
- Tamsulosin Hcl142 claims
- Alendronate Sodium134 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncSanta Clara, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Janet Whang among 17,696 internal medicine physician records in California
Janet Whang, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2005 · median 2004 among the 11,065 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Pankaj Bahl, M.D.Los Angeles, CA 900891548450489
- Sumati Bansal, D.O.Los Angeles, CA 900891881854651
- Rogelio Bravo, M.D.Los Angeles, CA 900891295919009
- Kevin Kwak, M.D.Los Angeles, CA 900891275759425
- Sarita Mohanty, MDLos Angeles, CA 900891730286683
- Vidya Narayan, M.DLos Angeles, CA 900891396943254
- Hoa Phan, D.O.Los Angeles, CA 900891295919686
- Jesse Sammons, MDLos Angeles, CA 900891871753707
Common questions
What is Janet Whang, M.D.'s NPI number?
Janet Whang, M.D.'s National Provider Identifier (NPI) is 1639369002, issued on Jul 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Janet Whang, M.D. located?
The NPPES record lists a practice address at 2020 Zonal Ave Ste Ird624, Los Angeles, CA, 90089. Phone: (323) 226-7644. Providers update this record themselves, so call before visiting.
How can I verify Janet Whang, M.D.'s license?
NPPES lists California license number A97042, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Janet Whang, M.D. prescribe under Medicare Part D?
In 2024, Janet Whang, M.D. had 4,603 Medicare Part D claims for 403 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.