DR. LAUREN KIM LEE M.D.
NPI 1598992984
Pediatrics - Neonatal-Perinatal Medicine in Fontana, CA
About Dr. Lauren Kim Lee M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LAUREN KIM LEE M.D. (NPI 1598992984) is an individual neonatal-perinatal medicine provider in Fontana, California, licensed in California (A117247) and active in the NPI registry since June 2009. She 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. Lauren Kim Lee M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Lauren Lee reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fontana, CA 92335
- Reassigned Medicare billing, California enrollment
- 5,228 clinicians in this Medicare group
Pomona, CA 91766
- Reassigned Medicare billing, California enrollment
- 1,939 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.
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.
FONTANA, CA 92335
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 Lauren Lee's NPI number?
The NPI number for Lauren Lee is 1598992984. It was assigned to this individual provider in the NPPES registry on June 12, 2009.
Where is Lauren Lee located?
Lauren Lee practices at 9961 Sierra Ave, Fontana, CA 92335. The listed phone number is (909) 302-7300.
What is Lauren Lee's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.
Is Lauren Lee enrolled in Medicare?
Yes. Lauren Lee is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Lauren Lee's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lauren Lee reassigns Medicare benefits to 2 organizations: Southern California Permanente Medical Group (Fontana, CA) and County Of Los Angeles (Pomona, 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 Lauren 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 Lauren Lee was last updated on November 23, 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. Lauren Kim Lee, M.D. · NPI 1598992984
Neonatal-Perinatal Medicine physician in Fontana, California. Individual provider, active in the CMS NPPES registry since June 12, 2009.
## Identity
- **NPI:** 1598992984 (Entity type: Individual)
- **Enumerated:** June 12, 2009
- **Primary specialty:** Pediatrics - Neonatal-Perinatal Medicine · taxonomy 2080N0001X
- **State license:** A117247 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9961 SIERRA AVE, Fontana, CA 92335-6720
- **Phone:** (909) 302-7300
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Southern California Permanente Medical Group (NPI 1689606196, Fontana, CA); County Of Los Angeles (NPI 1649464496, Pomona, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 23, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1598992984) · Data from the CMS NPPES public registry.