Cathryn McWilliams, MD
Pediatrics Physician · Phoenixville, PA
Cathryn McWilliams, MD is a pediatrics physician with a practice address in Phoenixville, Pennsylvania, and NPI 1932113453, issued on Jul 28, 2006. Check the license (Pennsylvania MD058315L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Cathryn McWilliams
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- MD058315L PA
Self-reported in NPPES; status is on the state search - Practice location
- 824 Main St, Phoenixville, PA 19460
- Phone
- (610) 935-1330
- Enumerated
- Jul 28, 2006
- Record last updated
- Mar 15, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 0018495830001 PA
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 3,382 in Pennsylvania → Look up another NPI →
Also registered at 824 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Imad Alabdul RazzakInternal Medicine Physician1760210991
- Jason BrennanMedical Physician Assistant1912039876
- M.nour ChabaloutStudent in an Organized Health Care Education/Training Program1316839848
- Janine Darby, MDFamily Medicine Physician1033305727
- Dana Devaney, DOPediatrics Physician1023117314
- Jacquline Diblasio, M.D.Internal Medicine Physician1134131816
Verify Cathryn McWilliams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD058315LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 86.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Cathryn McWilliams among 3,382 pediatrics physician records in Pennsylvania
Cathryn McWilliams, MD is one of 3,382 pediatrics physician records with a practice address in Pennsylvania. 25% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 58% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2011 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatrics Physician providers in Pennsylvania
There are 3,382 pediatrics physician records in Pennsylvania.
All 3,382 in Pennsylvania → Every provider in Phoenixville → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Dana Devaney, DOPhoenixville, PA 194601023117314
- Gregory Keenan, M.D.Phoenixville, PA 194601205935129
- Maurice Rozwat, MDPhoenixville, PA 194601518988401
- Charles Schwartz, MDPhoenixville, PA 194601356365605
- Amy Siegel, MDPhoenixville, PA 194601588678007
- Peter Smith, MDPhoenixville, PA 194601447274790
- Pochau Tsoi, MDPhoenixville, PA 194601073534954
- Alicia Boellner-Kahn, M.D.Plymouth Meeting, PA 194621336188465
Common questions
What is Cathryn McWilliams, MD's NPI number?
Cathryn McWilliams, MD's National Provider Identifier (NPI) is 1932113453, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cathryn McWilliams, MD located?
The NPPES record lists a practice address at 824 Main St, Phoenixville, PA, 19460. Phone: (610) 935-1330. Providers update this record themselves, so call before visiting.
How can I verify Cathryn McWilliams, MD's license?
NPPES lists Pennsylvania license number MD058315L, 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.
What is Cathryn McWilliams, MD's MIPS final score?
The 2023 MIPS final score is 86.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.
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.