NPPES file of Aug 9, 2026

William M. Castillo, M.D.

Specialist · Pittsburgh, PA

William M. Castillo, M.D. is a specialist with a practice address in Pittsburgh, Pennsylvania, and NPI 1295798478, issued on Apr 10, 2006. Check the license (Pennsylvania MD-034512L, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1295798478
Name
William M. Castillo
Credential
M.D.
Primary taxonomy
Specialist 174400000X
License number
MD-034512L PA
Self-reported in NPPES; status is on the state search
Practice location
3101 Brownsville RD, Pittsburgh, PA 15227
Phone
(412) 881-4220
Enumerated
Apr 10, 2006
Record last updated
Jul 13, 2026
Fax
(412) 881-9270
Medicaid ID
0010425980003 PA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest specialist records → All 2,031 in Pennsylvania → Look up another NPI →

Also registered at 3101 Brownsville RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Manuel Castillo, M.D.Specialist1427011600

Verify William M. Castillo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
    Search for license MD-034512L    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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97% fewer Medicare Part D claims than the average specialist in 2024

44 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.

  1. William Castillo44
  2. Specialty average1,380

Most prescribed

  1. Jardiance16 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

William M. Castillo among 2,031 specialist records in Pennsylvania

William M. Castillo, M.D. is one of 2,031 specialist records with a practice address in Pennsylvania. 40% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.

  • NPI issued2006 · 9% of these records are older, 34% newer
  • In a Medicare fileYes · 40% of these records are
  • In the CMS Doctors and Clinicians fileNo · 27% of these records are
  • Record last updated2026 · 69% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

767 specialist records list a practice address in Pittsburgh

They are 767 of the 28,866 NPPES records with a practice address in Pittsburgh, and 2,031 specialist records in Pennsylvania.

All 2,031 in Pennsylvania → Every provider in Pittsburgh → Specialist nationwide →

The 8 specialist records with the nearest ZIP codes

  1. Eileen Baade, MDPittsburgh, PA 152271487626701
  2. Manuel Castillo, M.D.Pittsburgh, PA 152271427011600
  3. Jorge LindenbaumPittsburgh, PA 152271952375198
  4. Ramesh Khurana, M.D.Pittsburgh, PA 152281245442029
  5. Sylvia Choi, MDPittsburgh, PA 152241225001753
  6. Steven Docimo, M.D.Pittsburgh, PA 152241487627998
  7. Christina DoemelPittsburgh, PA 152241003781626
  8. Lina Ghaloul GonzalezPittsburgh, PA 152241821328477

Common questions

What is William M. Castillo, M.D.'s NPI number?

William M. Castillo, M.D.'s National Provider Identifier (NPI) is 1295798478, issued on Apr 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William M. Castillo, M.D. located?

The NPPES record lists a practice address at 3101 Brownsville RD, Pittsburgh, PA, 15227. Phone: (412) 881-4220. Providers update this record themselves, so call before visiting.

How can I verify William M. Castillo, M.D.'s license?

NPPES lists Pennsylvania license number MD-034512L, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.

How much does William M. Castillo, M.D. prescribe under Medicare Part D?

In 2024, William M. Castillo, M.D. had 44 Medicare Part D claims; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.