WILLIAM BOOK M.D.
NPI 1295895472
Anesthesiology in New York, NY
About William Book M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM BOOK M.D. (NPI 1295895472) is an individual anesthesiology provider in New York, New York, licensed in New York (151890) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Manitoba, Faculty Of Medicine (1980).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
William Book 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
5Medicare enrollment records show William Book reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10075
- Reassigned Medicare billing, New York enrollment
- 3 clinicians in this Medicare group
New York, NY 10003
- Reassigned Medicare billing, New York enrollment
- 94 clinicians in this Medicare group
Roslyn Heights, NY 11577
- Reassigned Medicare billing, New York enrollment
- 46 clinicians in this Medicare group
Hartsdale, NY 10530
- Reassigned Medicare billing, New York enrollment
- 142 clinicians in this Medicare group
Wayne, NJ 07470
- Reassigned Medicare billing, New Jersey enrollment
- 41 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
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 7
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 William Book's NPI number?
The NPI number for William Book is 1295895472. It was assigned to this individual provider in the NPPES registry on December 11, 2006.
Where is William Book located?
William Book practices at 140 E 80th St, New York, NY 10075. The listed phone number is (917) 620-0711.
What is William Book's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is William Book enrolled in Medicare?
Yes. William Book 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 William Book's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Book reassigns Medicare benefits to 5 organizations: Wjb Anesthesia Services PLLC (New York, NY), York Anesthesiologists PLLC (New York, NY), New York Bariatric Surgery Group PLLC (Roslyn Heights, NY), Singular Anesthesia Services, PLLC (Hartsdale, NY) and Premier Bariatric New Jersey PC (Wayne, NJ). 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 William Book'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 William Book was last updated on July 24, 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.
# William Book, M.D. · NPI 1295895472
Anesthesiology physician in New York, New York. Individual provider, active in the CMS NPPES registry since December 11, 2006.
## Identity
- **NPI:** 1295895472 (Entity type: Individual)
- **Enumerated:** December 11, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 151890 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 140 E 80TH ST, New York, NY 10075-0306
- **Phone:** (917) 620-0711
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Wjb Anesthesia Services PLLC (NPI 1962045104, New York, NY); York Anesthesiologists PLLC (NPI 1508947441, New York, NY); New York Bariatric Surgery Group PLLC (NPI 1164898821, Roslyn Heights, NY); Singular Anesthesia Services, PLLC (NPI 1881086718, Hartsdale, NY); Premier Bariatric New Jersey PC (NPI 1548735145, Wayne, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Manitoba, Faculty Of Medicine, class of 1980
## Record status
- **NPPES last updated:** July 24, 2019
- **Other identifiers:** Medicaid 01267156 (NY)
---
Source: [NPI Profile](https://npiprofile.com/npi/1295895472) · Data from the CMS NPPES public registry.