WILLIAM M SCHIFF M.D.
NPI 1629098991
Ophthalmology in New York, NY
About William M Schiff M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM M SCHIFF M.D. (NPI 1629098991) is an individual ophthalmology provider in New York, New York, licensed in New York (178965) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Lenox Hill Hospital, and is a graduate of New York University School Of Medicine (1988).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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 M Schiff 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 William Schiff reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 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 12
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.
Lenox Hill Hospital
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10032 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
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 Schiff's NPI number?
The NPI number for William Schiff is 1629098991. It was assigned to this individual provider in the NPPES registry on July 20, 2006.
Where is William Schiff located?
William Schiff practices at 635 W 165th St Box 92, New York, NY 10032. The listed phone number is (212) 305-9535.
What is William Schiff's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is William Schiff enrolled in Medicare?
Yes. William Schiff 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 William Schiff's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Schiff reassigns Medicare benefits to North Shore-Lij Medical PC (Great Neck, 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 William Schiff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is William Schiff affiliated with any hospitals?
According to CMS data, William Schiff is affiliated with Lenox Hill Hospital.
When was this NPI record last updated?
The NPPES record for William Schiff was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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 M Schiff, M.D. · NPI 1629098991
Ophthalmology physician in New York, New York. Individual provider, active in the CMS NPPES registry since July 20, 2006.
## Identity
- **NPI:** 1629098991 (Entity type: Individual)
- **Enumerated:** July 20, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** 178965 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 635 W 165TH ST, BOX 92, New York, NY 10032-3724
- **Phone:** (212) 305-9535
## 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:** North Shore-Lij Medical PC (NPI 1053688572, Great Neck, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York University School Of Medicine, class of 1988
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare UPIN E17316; Medicare ID-Type Unspecified 30F611; Medicaid 01771200 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1629098991) · Data from the CMS NPPES public registry.