DR. ALLYSON M FLOWER M.D.
NPI 1053745232
Pediatrics - Pediatric Hematology-Oncology in Hawthorne, NY
About Dr. Allyson M Flower M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALLYSON M FLOWER M.D. (NPI 1053745232) is an individual pediatric hematology-oncology provider in Hawthorne, New York, licensed in New York (271651) and active in the NPI registry since August 2013. She is enrolled in Medicare PECOS, is affiliated with Westchester Medical Center, and is a graduate of Other (2010).
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
Dr. Allyson M Flower 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 Allyson Flower reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hawthorne, NY 10532
- Reassigned Medicare billing, New York enrollment
- 511 clinicians in this Medicare group
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 220 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 3
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Westchester Medical Center
Acute Care Hospitals · Valhalla, NYOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HAWTHORNE, NY 10532
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 Allyson Flower's NPI number?
The NPI number for Allyson Flower is 1053745232. It was assigned to this individual provider in the NPPES registry on August 24, 2013.
Where is Allyson Flower located?
Allyson Flower practices at 19 Skyline Dr 1n-J08, Hawthorne, NY 10532. The listed phone number is (914) 493-7997.
What is Allyson Flower's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.
Is Allyson Flower enrolled in Medicare?
Yes. Allyson Flower 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 Allyson Flower's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allyson Flower reassigns Medicare benefits to 2 organizations: Boston Children's Health Physicians, LLP (Hawthorne, NY) and Memorial Pediatric Group (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 Allyson Flower's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Allyson Flower affiliated with any hospitals?
According to CMS data, Allyson Flower is affiliated with Westchester Medical Center.
When was this NPI record last updated?
The NPPES record for Allyson Flower was last updated on July 13, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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. Allyson M Flower, M.D. · NPI 1053745232
Pediatric Hematology-Oncology physician in Hawthorne, New York. Individual provider, active in the CMS NPPES registry since August 24, 2013.
## Identity
- **NPI:** 1053745232 (Entity type: Individual)
- **Enumerated:** August 24, 2013
- **Primary specialty:** Pediatrics - Pediatric Hematology-Oncology · taxonomy 2080P0207X
- **State license:** 271651 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 19 SKYLINE DR, 1N-J08, Hawthorne, NY 10532-2134
- **Phone:** (914) 493-7997
## 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): Boston Children's Health Physicians, LLP (NPI 1467454967, Hawthorne, NY); Memorial Pediatric Group (NPI 1750352381, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** July 13, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1053745232) · Data from the CMS NPPES public registry.