DR. MARGARET H MEI MD
NPI 1851477319
Physical Medicine & Rehabilitation in New York, NY
About Dr. Margaret H Mei Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARGARET H MEI MD (NPI 1851477319) is an individual physical medicine & rehabilitation provider in New York, New York, licensed in New York (238738) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of Other (1982).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 1
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. Margaret H Mei 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 Reassignment
Medicare enrollment records show Margaret Mei reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10280
- Reassigned Medicare billing, New York enrollment
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 9
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.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10280
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 Margaret Mei's NPI number?
The NPI number for Margaret Mei is 1851477319. It was assigned to this individual provider in the NPPES registry on October 27, 2006. The provider is also known as Dr. Heyong Mei MD.
Where is Margaret Mei located?
Margaret Mei practices at 380 Rector Pl Ste P01, New York, NY 10280. The listed phone number is (212) 786-0103.
What is Margaret Mei's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.
Is Margaret Mei enrolled in Medicare?
Yes. Margaret Mei 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 organization bills Medicare for Margaret Mei's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Mei reassigns Medicare benefits to Optimum Rehab & Wellness, PLLC (New York, NY). 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 Margaret Mei'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 Margaret Mei was last updated on April 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 months 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.