STEVEN MICHAEL MCMAHON D.C.
NPI 1497794747
Chiropractor - Neurology in New York, NY
About Steven Michael Mcmahon D.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEVEN MICHAEL MCMAHON D.C. (NPI 1497794747) is an individual neurology provider in New York, New York, licensed in New York (X007469) and active in the NPI registry since June 2006. He is a graduate of Other (1993).
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
Steven Michael Mcmahon D.c. 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 Steven Mcmahon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10011
- 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 2
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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mcmahon's NPI number?
The NPI number for Steven Mcmahon is 1497794747. It was assigned to this individual provider in the NPPES registry on June 5, 2006.
Where is Steven Mcmahon located?
Steven Mcmahon practices at 231 W 21st St Lower Level, New York, NY 10011. The listed phone number is (212) 243-6384.
What is Steven Mcmahon's specialty?
The primary specialty registered for this NPI is Chiropractor, specializing in Neurology, with taxonomy code 111NN0400X.
Is Steven Mcmahon enrolled in Medicare?
Yes. Steven Mcmahon 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 Steven Mcmahon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Mcmahon reassigns Medicare benefits to Mcmahon Chiropractic LLC (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 Steven Mcmahon'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 Mcmahon was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Steven Michael Mcmahon, D.C. · NPI 1497794747
Neurology provider in New York, New York. Individual provider, active in the CMS NPPES registry since June 5, 2006.
## Identity
- **NPI:** 1497794747 (Entity type: Individual)
- **Enumerated:** June 5, 2006
- **Primary specialty:** Chiropractor - Neurology · taxonomy 111NN0400X
- **State license:** X007469 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 231 W 21ST ST, LOWER LEVEL, New York, NY 10011-3116
- **Phone:** (212) 243-6384 · **Fax:** (212) 243-6142
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** Mcmahon Chiropractic LLC (NPI 1902022965, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1993
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1497794747) · Data from the CMS NPPES public registry.