ALLISON TAYLOR COOK REAVES M.D.
NPI 1447786348
Internal Medicine in Boston, MA
About Allison Taylor Cook Reaves M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALLISON TAYLOR COOK REAVES M.D. (NPI 1447786348) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (282111) and active in the NPI registry since May 2017. She is enrolled in Medicare PECOS, is affiliated with Emerson Hospital -, and is a graduate of Tufts University School Of Medicine (2016).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
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
Allison Taylor Cook Reaves 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 Reassignment
Medicare enrollment records show Allison Reaves reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Boston, MA 02111
- Reassigned Medicare billing, Massachusetts enrollment
- 334 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Emerson Hospital -
Acute Care Hospitals · W Concord, MATufts Medical Center
Acute Care Hospitals · Boston, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02111 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
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 Allison Reaves's NPI number?
The NPI number for Allison Reaves is 1447786348. It was assigned to this individual provider in the NPPES registry on May 11, 2017.
Where is Allison Reaves located?
Allison Reaves practices at 800 Washington St, Boston, MA 02111. The listed phone number is (617) 636-5000.
What is Allison Reaves's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Allison Reaves enrolled in Medicare?
Yes. Allison Reaves 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 Allison Reaves's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allison Reaves reassigns Medicare benefits to Pratt Medical Group, Inc (Boston, MA). 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 Allison Reaves's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Allison Reaves accept?
Health plans from Taro Health list Allison Reaves as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Allison Reaves affiliated with any hospitals?
According to CMS data, Allison Reaves is affiliated with Emerson Hospital - and Tufts Medical Center.
When was this NPI record last updated?
The NPPES record for Allison Reaves was last updated on July 1, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Allison Taylor Cook Reaves, M.D. · NPI 1447786348
Internal Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since May 11, 2017.
## Identity
- **NPI:** 1447786348 (Entity type: Individual)
- **Enumerated:** May 11, 2017
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 282111 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 800 WASHINGTON ST, Boston, MA 02111-1552
- **Phone:** (617) 636-5000
## 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:** Pratt Medical Group, Inc (NPI 1013237809, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tufts University School Of Medicine, class of 2016
## Record status
- **NPPES last updated:** July 1, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1447786348) · Data from the CMS NPPES public registry.