WILLIAM R FLORES
NPI 1639537608
Hospitalist in Forest Hills, NY
About William R Flores NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM R FLORES (NPI 1639537608) is an individual hospitalist provider in Forest Hills, New York, licensed in New York (299666) and active in the NPI registry since February 2016. He is enrolled in Medicare PECOS, is affiliated with New York-presbyterian Hospital, and is a graduate of Other (2015).
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
William R Flores 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 Flores reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bronxville, NY 10708
- Reassigned Medicare billing, New York enrollment
- 531 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.
New York-Presbyterian Hospital
Acute Care Hospitals · New York, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11375 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.
Referred Medical Equipment & Supplies CMS DME claims 2
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.
FOREST HILLS, NY 11375
FOREST HILLS, NY 11375
FOREST HILLS, NY 11375
FOREST HILLS, NY 11375
FOREST HILLS, NY 11375
FOREST HILLS, NY 11375
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 Flores's NPI number?
The NPI number for William Flores is 1639537608. It was assigned to this individual provider in the NPPES registry on February 5, 2016.
Where is William Flores located?
William Flores practices at 10201 66th Rd, Forest Hills, NY 11375. The listed phone number is (787) 930-7314.
What is William Flores's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is William Flores enrolled in Medicare?
Yes. William Flores 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 Flores's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Flores reassigns Medicare benefits to Lawrence Medical Associates, PC (Bronxville, 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 Flores's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is William Flores affiliated with any hospitals?
According to CMS data, William Flores is affiliated with New York-Presbyterian Hospital.
When was this NPI record last updated?
The NPPES record for William Flores was last updated on July 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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 R Flores · NPI 1639537608
Hospitalist physician in Forest Hills, New York. Individual provider, active in the CMS NPPES registry since February 5, 2016.
## Identity
- **NPI:** 1639537608 (Entity type: Individual)
- **Enumerated:** February 5, 2016
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 299666 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 10201 66TH RD, Forest Hills, NY 11375-2029
- **Phone:** (787) 930-7314
## 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:** Lawrence Medical Associates, PC (NPI 1497260806, Bronxville, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** July 24, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1639537608) · Data from the CMS NPPES public registry.