DANISSA JANELLE WILLIAMS MD
NPI 1164041000
Family Medicine in Harrison, NY
About Danissa Janelle Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DANISSA JANELLE WILLIAMS MD (NPI 1164041000) is an individual family medicine provider in Harrison, New York, licensed in New York (321728) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, is affiliated with White Plains Hospital Center, and maintains a secondary practice location in Flemington.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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
Danissa Janelle Williams Md 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
2Medicare enrollment records show Danissa Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
White Plains, NY 10601
- Reassigned Medicare billing, New York enrollment
- 445 clinicians in this Medicare group
New York, NY 10032
- Reassigned Medicare billing, New York enrollment
- 3,922 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
White Plains Hospital Center
Acute Care Hospitals · White Plains, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10528 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
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 Danissa Williams's NPI number?
The NPI number for Danissa Williams is 1164041000. It was assigned to this individual provider in the NPPES registry on April 10, 2020.
Where is Danissa Williams located?
Danissa Williams practices at 600 Mamaroneck Ave Ste 301, Harrison, NY 10528. The listed phone number is (914) 723-8100.
What is Danissa Williams's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Danissa Williams enrolled in Medicare?
Yes. Danissa 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 Danissa Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Danissa Williams reassigns Medicare benefits to 2 organizations: White Plains Physician Services PC (White Plains, NY) and Trustees Of Columbia University In The City Of New York (New York, 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 Danissa Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Danissa Williams affiliated with any hospitals?
According to CMS data, Danissa Williams is affiliated with White Plains Hospital Center.
When was this NPI record last updated?
The NPPES record for Danissa Williams was last updated on May 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Danissa Janelle Williams, MD · NPI 1164041000
Family Medicine physician in Harrison, New York. Individual provider, active in the CMS NPPES registry since April 10, 2020.
## Identity
- **NPI:** 1164041000 (Entity type: Individual)
- **Enumerated:** April 10, 2020
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 321728 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 MAMARONECK AVE STE 301, Harrison, NY 10528-1613
- **Phone:** (914) 723-8100 · **Fax:** (914) 849-7781
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): White Plains Physician Services PC (NPI 1124502687, White Plains, NY); Trustees Of Columbia University In The City Of New York (NPI 1508266347, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** City University Of New York School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** May 30, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1164041000) · Data from the CMS NPPES public registry.