DR. LAURENCE WILLIAMS MD
NPI 1548237555
Pediatrics in New York, NY
About Dr. Laurence Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LAURENCE WILLIAMS MD (NPI 1548237555) is an individual pediatrics provider in New York, New York, licensed in New York (156344) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Laurence Williams Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Laurence Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10032
- Reassigned Medicare billing, New York enrollment
- 3,922 clinicians in this Medicare group
New York, NY 10025
- Reassigned Medicare billing, New York enrollment
- 5,251 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 10032 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 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10032
NEW YORK, NY 10032
NEW YORK, NC 10032
NEW YORK, NC 10032
NEW YORK, NY 10032
NEW YORK, NY 10032
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 Laurence Williams's NPI number?
The NPI number for Laurence Williams is 1548237555. It was assigned to this individual provider in the NPPES registry on March 8, 2006.
Where is Laurence Williams located?
Laurence Williams practices at Columbia Unversity Department Pediatrics 3959 Broadway, New York, NY 10032. The listed phone number is (221) 304-7250.
What is Laurence Williams's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Laurence Williams enrolled in Medicare?
Yes. Laurence Williams is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Laurence Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Laurence Williams reassigns Medicare benefits to 2 organizations: Trustees Of Columbia University In The City Of New York (New York, NY) and Montefiore Medical Center (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 Laurence 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 Laurence Williams was last updated on August 14, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Dr. Laurence Williams, MD · NPI 1548237555
Pediatrics physician in New York, New York. Individual provider, active in the CMS NPPES registry since March 8, 2006.
## Identity
- **NPI:** 1548237555 (Entity type: Individual)
- **Enumerated:** March 8, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 156344 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** COLUMBIA UNVERSITY DEPARTMENT PEDIATRICS, 3959 BROADWAY, New York, NY 10032
- **Phone:** (221) 304-7250 · **Fax:** (212) 544-1974
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): Trustees Of Columbia University In The City Of New York (NPI 1477068971, New York, NY); Montefiore Medical Center (NPI 1760288278, New York, NY) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 14, 2012
- **Other identifiers:** Medicare UPIN A60666 (NY); Medicaid 01468693 (NY); Medicare ID-Type Unspecified 13E571 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1548237555) · Data from the CMS NPPES public registry.