DR. JANET WHANG M.D.
NPI 1639369002
Internal Medicine in Los Angeles, CA
About Dr. Janet Whang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JANET WHANG M.D. (NPI 1639369002) is an individual internal medicine provider in Los Angeles, California, licensed in California (A97042) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (2005).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Janet Whang M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Janet Whang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90089 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90089
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Janet Whang's NPI number?
The NPI number for Janet Whang is 1639369002. It was assigned to this individual provider in the NPPES registry on July 31, 2007.
Where is Janet Whang located?
Janet Whang practices at 2020 Zonal Ave Ste Ird624, Los Angeles, CA 90089. The listed phone number is (323) 226-7644.
What is Janet Whang's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Janet Whang enrolled in Medicare?
Yes. Janet Whang is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Janet Whang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Janet Whang reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Janet Whang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Janet Whang was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Janet Whang, M.D. · NPI 1639369002
Internal Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since July 31, 2007.
## Identity
- **NPI:** 1639369002 (Entity type: Individual)
- **Enumerated:** July 31, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A97042 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2020 ZONAL AVE STE IRD624, Los Angeles, CA 90089-9520
- **Phone:** (323) 226-7644
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Diego School Of Medicine, class of 2005
## Record status
- **NPPES last updated:** February 11, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1639369002) · Data from the CMS NPPES public registry.