JOSEPH T WILLIAMS M.D
NPI 1659473379
Internal Medicine in Brooklyn, NY
About Joseph T Williams M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEPH T WILLIAMS M.D (NPI 1659473379) is an individual internal medicine provider in Brooklyn, New York, licensed in New York (162141) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1983).
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
Joseph T Williams 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 Joseph Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Brooklyn, NY 11203
- Reassigned Medicare billing, New York enrollment
- 1,615 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11203 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
BROOKLYN, NY 11203
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 Joseph Williams's NPI number?
The NPI number for Joseph Williams is 1659473379. It was assigned to this individual provider in the NPPES registry on September 2, 2006.
Where is Joseph Williams located?
Joseph Williams practices at 451 Clarkson Ave, Brooklyn, NY 11203. The listed phone number is (718) 245-3448.
What is Joseph Williams's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Joseph Williams enrolled in Medicare?
Yes. Joseph Williams 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 Joseph Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Williams reassigns Medicare benefits to New York City Health And Hospitals Corporation (Brooklyn, 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 Joseph Williams'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 Joseph Williams 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.
# Joseph T Williams, M.D · NPI 1659473379
Internal Medicine physician in Brooklyn, New York. Individual provider, active in the CMS NPPES registry since September 2, 2006.
## Identity
- **NPI:** 1659473379 (Entity type: Individual)
- **Enumerated:** September 2, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 162141 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 451 CLARKSON AVE, Brooklyn, NY 11203-2057
- **Phone:** (718) 245-3448
## 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:** New York City Health And Hospitals Corporation (NPI 1184632945, Brooklyn, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1983
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1659473379) · Data from the CMS NPPES public registry.