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DR. WILLIAM MIDDLESWORTH M.D.
NPI 1679666440
Surgery - Pediatric Surgery in New York, NY

Active since October 02, 2006PECOS Enrolled
3959 BROADWAY, CHN 2, NEW YORK, NY 10032(212) 342-8585(212) 305-9270 Get Directions Write a Review

NPPES record last updated: August 15, 2013. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. William Middlesworth M.d. NPPES

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

DR. WILLIAM MIDDLESWORTH M.D. (NPI 1679666440) is an individual pediatric surgery provider in New York, New York, licensed in New York (207418) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1679666440
Entity TypeIndividualMale
Primary Taxonomy2086S0120X
Provider Legal NameDR. WILLIAM MIDDLESWORTHCredential: M.D.
Location Address3959 BROADWAY, CHN 2New York, NY 10032-1559
Mailing AddressPo Box 27036New York, NY 10087-7036 · (212) 342-8585 · Fax (212) 305-9270
Phone(212) 342-8585
Fax(212) 305-9270
Sole ProprietorYes
Enumeration DateOctober 2, 2006
Last NPPES UpdateAugust 15, 2013
✔ NPI 1679666440 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgery · Pediatric SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0120X
License✔ Licensed in NY · 207418
Definition
A surgeon with expertise in the management of surgical conditions in premature and newborn infants, children and adolescents.
3959 BROADWAY, New York, NY 10032
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Other Identifiers 1

Medicaid7161384NY

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Middlesworth M.d. 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 Reassignment

Medicare enrollment records show William Middlesworth reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Trustees Of Columbia University In The City Of New York
0.1 mi
Anesthesiology
622 W 168TH ST
New York, NY 10032
  • Reassigned Medicare billing, New York enrollment
  • 3,922 clinicians in this Medicare group
NPI 1477068971 (212) 305-9876

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

DR. PAMELA ISABEL GOOD M.D.
Pediatrics
3959 BROADWAY
NEW YORK, NY 10032
New York County (212) 305-8504
HAE LIN SON
Nurse Practitioner (Neonatal)
3959 BROADWAY
NEW YORK, NY 10032
New York County (201) 696-5960
ELIZABETH ANN BADER
Physician Assistant
3959 BROADWAY
NEW YORK, NY 10032
New York County (212) 305-5437
HYO JIN CHO MD
Student in an Organized Health Care Education/Training Program
3959 BROADWAY
NEW YORK, NY 10032
New York County (212) 305-8504
DR. DAVID RUBENSTEIN
Pediatrics (Neonatal-Perinatal Medicine)
3959 BROADWAY, COLUMBIA UNIVERSITY DEPARTMENT PEDIATRICS
NEW YORK, NY 10032
New York County (212) 304-7250
MS. MEREDITH GAROD-MUSIC CPNP
Nurse Practitioner (Pediatrics)
3959 BROADWAY
NEW YORK, NY 10032
New York County (212) 342-8530
EVIANNA CRUZ HERRERA MD/MPH
Pediatrics (Pediatric Gastroenterology)
3959 BROADWAY
NEW YORK, NY 10032
New York County (212) 305-5903
SARA BOMBONATO OTR/L
Occupational Therapist
3959 BROADWAY
NEW YORK, NY 10032
New York County (212) 305-5827

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 William Middlesworth's NPI number?

The NPI number for William Middlesworth is 1679666440. It was assigned to this individual provider in the NPPES registry on October 2, 2006.

Where is William Middlesworth located?

William Middlesworth practices at 3959 Broadway Chn 2, New York, NY 10032. The listed phone number is (212) 342-8585.

What is William Middlesworth's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.

Is William Middlesworth enrolled in Medicare?

Yes. William Middlesworth is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for William Middlesworth's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Middlesworth reassigns Medicare benefits to Trustees Of Columbia University In The City Of New York (New York, 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 William Middlesworth'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 William Middlesworth was last updated on August 15, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.