DR. ANNE GRAND'MAISON M.D.
NPI 1699170803
Internal Medicine - Medical Oncology in Buffalo, NY
About Dr. Anne Grand'maison M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANNE GRAND'MAISON M.D. (NPI 1699170803) is an individual medical oncology provider in Buffalo, New York, licensed in New York (286655) and active in the NPI registry since October 2014. She is enrolled in Medicare PECOS, is affiliated with Sisters Of Charity Hospital, and is a graduate of Other (1988).
NPPES Registry Identity
Specialties & Licenses 2
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. Anne Grand'maison M.d. 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
2Medicare enrollment records show Anne Grand'maison reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Buffalo, NY 14263
- Reassigned Medicare billing, New York enrollment
- 602 clinicians in this Medicare group
Buffalo, NY 14215
- Reassigned Medicare billing, New York enrollment
- 302 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 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Sisters Of Charity Hospital
Acute Care Hospitals · Buffalo, NYErie County Medical Center
Acute Care Hospitals · Buffalo, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 14263 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
BUFFALO, NY 14263
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 Anne Grand'maison's NPI number?
The NPI number for Anne Grand'maison is 1699170803. It was assigned to this individual provider in the NPPES registry on October 30, 2014.
Where is Anne Grand'maison located?
Anne Grand'maison practices at Elm And Carlton Streets, Buffalo, NY 14263. The listed phone number is (716) 845-2300.
What is Anne Grand'maison's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Anne Grand'maison enrolled in Medicare?
Yes. Anne Grand'maison 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 Anne Grand'maison's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Anne Grand'maison reassigns Medicare benefits to 2 organizations: Roswell Park Cancer Institute (Buffalo, NY) and Erie County Medical Center Corporation (Buffalo, 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 Anne Grand'maison's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Anne Grand'maison affiliated with any hospitals?
According to CMS data, Anne Grand'maison is affiliated with Sisters Of Charity Hospital and Erie County Medical Center.
When was this NPI record last updated?
The NPPES record for Anne Grand'maison was last updated on July 16, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Dr. Anne Grand'maison, M.D. · NPI 1699170803
Medical Oncology physician in Buffalo, New York. Individual provider, active in the CMS NPPES registry since October 30, 2014.
## Identity
- **NPI:** 1699170803 (Entity type: Individual)
- **Enumerated:** October 30, 2014
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** 286655 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** ELM AND CARLTON STREETS, Buffalo, NY 14263-0001
- **Phone:** (716) 845-2300
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Roswell Park Cancer Institute (NPI 1720036593, Buffalo, NY); Erie County Medical Center Corporation (NPI 1528233616, Buffalo, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1988
## Record status
- **NPPES last updated:** July 16, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1699170803) · Data from the CMS NPPES public registry.