DR. NATHAN CHI HWA LEE M.D.
NPI 1497013239
Pediatrics in Los Angeles, CA
About Dr. Nathan Chi Hwa Lee M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NATHAN CHI HWA LEE M.D. (NPI 1497013239) is an individual pediatrics provider in Los Angeles, California, licensed in California (A116282) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS.
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 (PECOS)
Dr. Nathan Chi Hwa Lee M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Nathan Lee reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Childrens Hospital Los Angeles Medical Group Inc
- 1,281 clinicians in this Medicare group
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1396287082 (California)
- 13,921 clinicians in this Medicare group
Whittier, CA 90602
- Reassigned Medicare billing, California enrollment
- 121 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 90027 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
LOS ANGELES, CA 90027
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 Nathan Lee's NPI number?
The NPI number for Nathan Lee is 1497013239. It was assigned to this individual provider in the NPPES registry on April 30, 2012.
Where is Nathan Lee located?
Nathan Lee practices at 4650 W Sunset Blvd Residents Office, Los Angeles, CA 90027. The listed phone number is (323) 361-2122.
What is Nathan Lee's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Nathan Lee enrolled in Medicare?
Yes. Nathan Lee is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Nathan Lee's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nathan Lee reassigns Medicare benefits to 3 organizations: Children's Hospital Los Angeles Medical Group, Inc. (Los Angeles, CA), Southern California Permanente Medical Group (Los Angeles, CA) and Intercommunity Emergency Medical Group (Whittier, CA). Each 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 Nathan Lee'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 Nathan Lee was last updated on December 3, 2021. 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. Nathan Chi Hwa Lee, M.D. · NPI 1497013239
Pediatrics physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since April 30, 2012.
## Identity
- **NPI:** 1497013239 (Entity type: Individual)
- **Enumerated:** April 30, 2012
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A116282 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4650 W SUNSET BLVD, RESIDENTS OFFICE, Los Angeles, CA 90027-6062
- **Phone:** (323) 361-2122
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Children's Hospital Los Angeles Medical Group, Inc. (NPI 1265530653, Los Angeles, CA); Southern California Permanente Medical Group (NPI 1134151657, Los Angeles, CA); Intercommunity Emergency Medical Group (NPI 1871535286, Whittier, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 3, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1497013239) · Data from the CMS NPPES public registry.