1. Home
  2. Directory
  3. Pennsylvania
  4. Pittsburgh
  5. Specialist
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WILLIAM M CASTILLO M.D.
NPI 1295798478
Specialist in Pittsburgh, PA

Active since April 10, 2006PECOS Enrolled
3101 BROWNSVILLE RD, PITTSBURGH, PA 15227(412) 881-4220(412) 881-9270 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About William M Castillo M.d. NPPES

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

WILLIAM M CASTILLO M.D. (NPI 1295798478) is an individual specialist in Pittsburgh, Pennsylvania, licensed in Pennsylvania (MD-034512L) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1295798478
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameWILLIAM M CASTILLOCredential: M.D.
Location Address3101 BROWNSVILLE RDPittsburgh, PA 15227-2429
Mailing Address3101 Brownsville RdPittsburgh, PA 15227-2429 · (412) 881-4220 · Fax (412) 881-9270
Phone(412) 881-4220
Fax(412) 881-9270
Sole ProprietorNo
Enumeration DateApril 10, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1295798478 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in PA · MD-034512L
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
3101 BROWNSVILLE RD, Pittsburgh, PA 15227
Open in Google Maps ↗

Other Identifiers 1

Medicaid0010425980003PA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William M Castillo 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.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MANUEL M CASTILLO M.D.
Specialist
3101 BROWNSVILLE RD
PITTSBURGH, PA 15227
Allegheny County (412) 881-4220
MANUEL M. CASTILLO, M.D., P.C.
Specialist
3101 BROWNSVILLE RD
PITTSBURGH, PA 15227
Allegheny County (412) 881-4220

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 Castillo's NPI number?

The NPI number for William Castillo is 1295798478. It was assigned to this individual provider in the NPPES registry on April 10, 2006.

Where is William Castillo located?

William Castillo practices at 3101 Brownsville Rd, Pittsburgh, PA 15227. The listed phone number is (412) 881-4220.

What is William Castillo's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is William Castillo enrolled in Medicare?

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

When was this NPI record last updated?

The NPPES record for William Castillo was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 days 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.