MARGARET R MITCHELL M.D.
NPI 1477551331
Internal Medicine in Williamsville, NY
About Margaret R Mitchell M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET R MITCHELL M.D. (NPI 1477551331) is an individual internal medicine provider in Williamsville, New York, licensed in New York (138250) and active in the NPI registry since July 2005. She 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)
Margaret R Mitchell M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Margaret Mitchell reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Batavia, NY 14020
- Reassigned Medicare billing, New York enrollment
- 782 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 14221 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WILLIAMSVILLE, NY 14221
WILLIAMSVILLE, NY 14221
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 Mitchell's NPI number?
The NPI number for Margaret Mitchell is 1477551331. It was assigned to this individual provider in the NPPES registry on July 13, 2005.
Where is Margaret Mitchell located?
Margaret Mitchell practices at 1360 N Forest Rd, Williamsville, NY 14221. The listed phone number is (716) 689-4800.
What is Margaret Mitchell's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Margaret Mitchell enrolled in Medicare?
Yes. Margaret Mitchell is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Margaret Mitchell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Mitchell reassigns Medicare benefits to United Memorial Medical Center (Batavia, 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 Mitchell'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 Mitchell 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.
# Margaret R Mitchell, M.D. · NPI 1477551331
Internal Medicine physician in Williamsville, New York. Individual provider, active in the CMS NPPES registry since July 13, 2005.
## Identity
- **NPI:** 1477551331 (Entity type: Individual)
- **Enumerated:** July 13, 2005
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 138250 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 1360 N FOREST RD, Williamsville, NY 14221-1200
- **Phone:** (716) 689-4800 · **Fax:** (716) 689-8916
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** United Memorial Medical Center (NPI 1508260704, Batavia, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1477551331) · Data from the CMS NPPES public registry.