DR. STEVEN MARCUS M.D.
NPI 1407098015
Clinic/Center - Primary Care in Los Angeles, CA
About Dr. Steven Marcus M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEVEN MARCUS M.D. (NPI 1407098015) is an individual primary care provider in Los Angeles, California, licensed in California (G33630) and active in the NPI registry since March 2009. 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. Steven Marcus M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Steven Marcus reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Grand Terrace, CA 92313
- Reassigned Medicare billing, Texas enrollment
- 101 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 90024 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Steven Marcus's NPI number?
The NPI number for Steven Marcus is 1407098015. It was assigned to this individual provider in the NPPES registry on March 27, 2009.
Where is Steven Marcus located?
Steven Marcus practices at 1021 Manning Ave, Los Angeles, CA 90024. The listed phone number is (310) 474-5671.
What is Steven Marcus's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.
Is Steven Marcus enrolled in Medicare?
Yes. Steven Marcus is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Steven Marcus's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Marcus reassigns Medicare benefits to Riverside-San Bernardino County Indian Health, Inc. (Grand Terrace, 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 Steven Marcus'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 Steven Marcus was last updated on March 27, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.