DR. LILY CHATTOPADHYAY M.D.
NPI 1518344258
Pediatrics in Los Angeles, CA
About Dr. Lily Chattopadhyay M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LILY CHATTOPADHYAY M.D. (NPI 1518344258) is an individual pediatrics provider in Los Angeles, California, licensed in California (A129136) and active in the NPI registry since May 2015. She is enrolled in Medicare PECOS and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (2012).
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. Lily Chattopadhyay 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 Reassignments
2Medicare enrollment records show Lily Chattopadhyay reassigns Medicare billing to 2 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 90012
- Reassigned Medicare billing, California enrollment
- 60 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 Lily Chattopadhyay's NPI number?
The NPI number for Lily Chattopadhyay is 1518344258. It was assigned to this individual provider in the NPPES registry on May 1, 2015.
Where is Lily Chattopadhyay located?
Lily Chattopadhyay practices at 4650 W Sunset Blvd, Los Angeles, CA 90027. The listed phone number is (323) 660-2450.
What is Lily Chattopadhyay's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Lily Chattopadhyay enrolled in Medicare?
Yes. Lily Chattopadhyay 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 organizations bill Medicare for Lily Chattopadhyay's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lily Chattopadhyay reassigns Medicare benefits to 2 organizations: Children's Hospital Los Angeles Medical Group, Inc. (Los Angeles, CA) and Los Angeles County Department Of Public Health (Los Angeles, 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 Lily Chattopadhyay'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 Lily Chattopadhyay was last updated on May 28, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. Lily Chattopadhyay, M.D. · NPI 1518344258
Pediatrics physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since May 1, 2015.
## Identity
- **NPI:** 1518344258 (Entity type: Individual)
- **Enumerated:** May 1, 2015
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** A129136 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4650 W SUNSET BLVD, Los Angeles, CA 90027-6062
- **Phone:** (323) 660-2450
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Children's Hospital Los Angeles Medical Group, Inc. (NPI 1265530653, Los Angeles, CA); Los Angeles County Department Of Public Health (NPI 1962109033, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Albert Einstein College Of Medicine Of Yeshiva University, class of 2012
## Record status
- **NPPES last updated:** May 28, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1518344258) · Data from the CMS NPPES public registry.