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MS. DEBORAH LYNN WILLIAMS NP
NPI 1619136652
Nurse Practitioner - Pediatrics in Mount Vernon, NY

Active since June 05, 2008PECOS Enrolled
107 W 4TH ST, MOUNT VERNON, NY 10550(914) 668-6828 Get Directions Write a Review

NPPES record last updated: June 5, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Ms. Deborah Lynn Williams Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. DEBORAH LYNN WILLIAMS NP (NPI 1619136652) is an individual pediatrics provider in Mount Vernon, New York, licensed in New York (381955) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1619136652
Entity TypeIndividualFemale
Primary Taxonomy363LP0200X
Provider Legal NameMS. DEBORAH LYNN WILLIAMSCredential: NP
Location Address107 W 4TH STMount Vernon, NY 10550-4002
Mailing Address107 W 4th StMount Vernon, NY 10550-4002 · (914) 668-6828 · Fax (914) 699-0837
Phone(914) 668-6828
Sole ProprietorYes
Enumeration DateJune 5, 2008
✔ NPI 1619136652 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0200X
License✔ Licensed in NY · 381955
107 W 4TH ST, Mount Vernon, NY 10550
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ms. Deborah Lynn Williams Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Deborah Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

St. Joseph's Hospital & Medical Center
3.5 mi
Psychiatry
127 S BROADWAY
Yonkers, NY 10701
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: St Joseph's Hospital Yonkers
  • 233 clinicians in this Medicare group
NPI 1245204908 (914) 378-7342
Optum Medical Care, P.C.
21 mi
Cardiovascular Disease
90 SOUTH BEDFORD RD, MT KISCO MEDICAL GROUP PC
Mount Kisco, NY 10549
  • Reassigned Medicare billing, New York enrollment
  • Medicare enrollment name: Optum Medical Care PC
  • 1,601 clinicians in this Medicare group
NPI 1982643003 (914) 241-1050

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 10550 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MS. DEEPTHI SARA SONY MD
Internal Medicine
107 W 4TH ST, ADMINISTRATION
MOUNT VERNON, NY 10550
Westchester County (914) 699-7200
MS. JULIE ANNE TYLER MIDWIFE
Midwife
107 W 4TH ST
MOUNT VERNON, NY 10550
Westchester County (914) 699-7200
RL MT VERNON PHARMACY INC
Pharmacy (Community/Retail Pharmacy)
107 W 4TH ST
MOUNT VERNON, NY 10550
Westchester County (914) 699-0235
CHRISTOPHER LEE NOLEN MSW
Social Worker
107 W 4TH ST
MOUNT VERNON, NY 10550
Westchester County (914) 530-3674
JONIQUE NURSE CNM
Midwife
107 W 4TH ST
MOUNT VERNON, NY 10550
Westchester County (914) 699-7200
DR. ANHTHO TRAN KASHYAP MD
Obstetrics & Gynecology
107 W 4TH ST
MOUNT VERNON, NY 10550
Westchester County (914) 699-7200
NATALIE SOFIA MONTANEZ PA-C
Physician Assistant
107 W 4TH ST
MOUNT VERNON, NY 10550
Westchester County (914) 699-7200
ASHLEY D AKHTER AHNP
Nurse Practitioner (Adult Health)
107 W 4TH ST
MOUNT VERNON, NY 10550
Westchester County (914) 699-7200

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 Deborah Williams's NPI number?

The NPI number for Deborah Williams is 1619136652. It was assigned to this individual provider in the NPPES registry on June 5, 2008.

Where is Deborah Williams located?

Deborah Williams practices at 107 W 4th St, Mount Vernon, NY 10550. The listed phone number is (914) 668-6828.

What is Deborah Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Is Deborah Williams enrolled in Medicare?

Yes. Deborah Williams is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Deborah Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Deborah Williams reassigns Medicare benefits to 2 organizations: St. Joseph's Hospital & Medical Center (Yonkers, NY) and Optum Medical Care, P.C. (Mount Kisco, 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 Deborah 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 Deborah Williams was last updated on June 5, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.