NPPES file of Aug 9, 2026

Willaim J. Sierraalta, MD

Surgery Physician · Philadelphia, PA

Willaim J. Sierraalta, MD is a surgery physician with a practice address in Philadelphia, Pennsylvania, and NPI 1932761483, issued on Jul 5, 2019. Check the license (Pennsylvania MT219417, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1932761483
Name
Willaim J. Sierraalta
Credential
MD
Primary taxonomy
Surgery Physician 208600000X
License numbers
MT219417 PA
036172109 IL
Self-reported in NPPES; status is on the state search
Practice location
230 N Broad St, Philadelphia, PA 19102
Phone
(215) 762-7000
Enumerated
Jul 5, 2019
Record last updated
Oct 7, 2024
Medicare enrollment
Enrolled (PECOS I20241016003775); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest surgery physician records → All 1,867 in Pennsylvania → Look up another NPI →

Also registered at 230 N Broad St

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

  1. Amir Abdulhay, DOEmergency Medicine Physician1124689674
  2. Bahar Adeli, MDInternal Medicine Physician1093237554
  3. Sundeep Agrawal, M.D.Internal Medicine Physician1902036379
  4. Collette Akhimiona, M.D.Internal Medicine Physician1811285646
  5. Roa Alqabbani, MDAnatomic Pathology & Clinical Pathology Physician1821580648
  6. Hasan Arif, MDNephrology Physician1598927808

Verify Willaim J. Sierraalta in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
    Search for license MT219417    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
Open the Pennsylvania license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Northwestern Medical Faculty FoundationGeneva, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Willaim J. Sierraalta among 1,867 surgery physician records in Pennsylvania

Willaim J. Sierraalta, MD is one of 1,867 surgery physician records with a practice address in Pennsylvania. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 77% of them.

  • NPI issued2019 · 77% of these records are older, 20% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2012 · median 2007 among the 932 with a school on file
  • Record last updated2024 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in Pennsylvania

There are 1,867 surgery physician records in Pennsylvania.

All 1,867 in Pennsylvania → Every provider in Philadelphia → Surgery Physician nationwide →

The 8 surgery physician records with the nearest ZIP codes

  1. John Clarke, M.D.Philadelphia, PA 191021033280300
  2. Scott Coleman, D.O.Philadelphia, PA 191021679954234
  3. Madison Crutcher, MDPhiladelphia, PA 191021841729365
  4. Mark Hoffman, M.D.Philadelphia, PA 191021093951634
  5. Lauren McCormack, M.D., M.P.H.Philadelphia, PA 191021114281128
  6. Teerin Meckmongkol, MDPhiladelphia, PA 191021912220575
  7. Lisa Moudgill, MDPhiladelphia, PA 191021205044948
  8. Augustine Nguyen, M.D.Philadelphia, PA 191021801103668

Common questions

What is Willaim J. Sierraalta, MD's NPI number?

Willaim J. Sierraalta, MD's National Provider Identifier (NPI) is 1932761483, issued on Jul 5, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Willaim J. Sierraalta, MD located?

The NPPES record lists a practice address at 230 N Broad St, Philadelphia, PA, 19102. Phone: (215) 762-7000. Providers update this record themselves, so call before visiting.

How can I verify Willaim J. Sierraalta, MD's license?

NPPES lists Pennsylvania license number MT219417, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.