DAYNA MARIE WILLIAMS M.D
NPI 1851683171
Radiology - Diagnostic Radiology in Brooklyn, NY
About Dayna Marie Williams M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAYNA MARIE WILLIAMS M.D (NPI 1851683171) is an individual diagnostic radiology provider in Brooklyn, New York, licensed in New York (284029) and active in the NPI registry since May 2011. She is enrolled in Medicare PECOS, is affiliated with Mount Sinai Hospital, and is a graduate of Ohio State University College Of Medicine (2011).
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
Dayna Marie 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 Reassignments
3Medicare enrollment records show Dayna Williams reassigns Medicare billing to 3 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
- 530 clinicians in this Medicare group
New York, NY 10029
- Reassigned Medicare billing, New York enrollment
- 1,067 clinicians in this Medicare group
Wantagh, NY 11793
- Reassigned Medicare billing, New York enrollment
- 572 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 10
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Sinai Hospital
Acute Care Hospitals · New York, NYMount Sinai St Luke's Roosevelt Hospital
Acute Care Hospitals · New York, NYMount Sinai Beth Israel
Acute Care Hospitals · New York, NYPhysician 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.
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.
Reported Quality Measures
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
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 Dayna Williams's NPI number?
The NPI number for Dayna Williams is 1851683171. It was assigned to this individual provider in the NPPES registry on May 4, 2011.
Where is Dayna Williams located?
Dayna Williams practices at 450 Clarkson Ave Box 1262, Brooklyn, NY 11203. The listed phone number is (718) 270-8867.
What is Dayna Williams's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Dayna Williams enrolled in Medicare?
Yes. Dayna 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 organizations bill Medicare for Dayna Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dayna Williams reassigns Medicare benefits to 3 organizations: Physicians Of University Hospital, PC (New York, NY), Fpa Hospital Based (New York, NY) and North Shore Medical Group Of The Mount Sinai School Of Medicine (Wantagh, NY). 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 Dayna Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Dayna Williams affiliated with any hospitals?
According to CMS data, Dayna Williams is affiliated with Mount Sinai Hospital, Mount Sinai St Luke's Roosevelt Hospital and Mount Sinai Beth Israel.
When was this NPI record last updated?
The NPPES record for Dayna Williams was last updated on December 31, 2018. 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.
# Dayna Marie Williams, M.D · NPI 1851683171
Diagnostic Radiology physician in Brooklyn, New York. Individual provider, active in the CMS NPPES registry since May 4, 2011.
## Identity
- **NPI:** 1851683171 (Entity type: Individual)
- **Enumerated:** May 4, 2011
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** 284029 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 450 CLARKSON AVE, BOX 1262, Brooklyn, NY 11203-2012
- **Phone:** (718) 270-8867
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Physicians Of University Hospital, PC (NPI 1992200075, New York, NY); Fpa Hospital Based (NPI 1427398676, New York, NY); North Shore Medical Group Of The Mount Sinai School Of Medicine (NPI 1992417323, Wantagh, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Ohio State University College Of Medicine, class of 2011
## Record status
- **NPPES last updated:** December 31, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1851683171) · Data from the CMS NPPES public registry.