MICHAEL Z STEIN MD
NPI 1437131810
Radiology - Diagnostic Radiology in Torrance, CA
About Michael Z Stein Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL Z STEIN MD (NPI 1437131810) is an individual diagnostic radiology provider in Torrance, California, licensed in California (A89601) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1999).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 5
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
Michael Z Stein Md 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
4Medicare enrollment records show Michael Stein reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Torrance, CA 90503
- Reassigned Medicare billing, California enrollment
- 35 clinicians in this Medicare group
Santa Monica, CA 90403
- Reassigned Medicare billing, California enrollment
- 46 clinicians in this Medicare group
Los Angeles, CA 90036
- Reassigned Medicare billing, California enrollment
- 57 clinicians in this Medicare group
New York, NY 10013
- Reassigned Medicare billing, New York enrollment
- 284 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.
Areas of Expertise CMS Part B claims 57
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
TORRANCE, CA 90503
TORRANCE, CA 90503
TORRANCE, CA 90503
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 Michael Stein's NPI number?
The NPI number for Michael Stein is 1437131810. It was assigned to this individual provider in the NPPES registry on November 19, 2005. The provider is also known as Michael Vaynshteyn.
Where is Michael Stein located?
Michael Stein practices at 4101 Torrance Blvd, Torrance, CA 90503. The listed phone number is (310) 303-5750.
What is Michael Stein's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Michael Stein enrolled in Medicare?
Yes. Michael Stein 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 Michael Stein's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Stein reassigns Medicare benefits to 4 organizations: Advanced Imaging Of South Bay, Inc. (Torrance, CA), Tower Imaging Medical Group, Inc (Santa Monica, CA), Tower Imaging Medical Associates, Inc. (Los Angeles, CA) and Chinatown True Care Medical PLLC (New York, NY). 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 Michael Stein'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 Michael Stein was last updated on April 25, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.