Erica Williams, PA-C
Physician Assistant · Mechanicsburg, PA
Erica Williams, PA-C is a physician assistant with a practice address in Mechanicsburg, Pennsylvania, and NPI 1225515315, issued on Jul 23, 2018. Check the license (Pennsylvania MA059757, as entered in NPPES) with the Pennsylvania board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Erica Williams
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- MA059757 PA
Self-reported in NPPES; status is on the state search - Practice location
- 6481 Carlisle Pike, Mechanicsburg, PA 17050
- Phone
- (814) 823-3900
- Enumerated
- Jul 23, 2018
- Record last updated
- Jan 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180906000137); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 8,020 in Pennsylvania → Look up another NPI →
Also registered at 6481 Carlisle Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kelly McCracken, PA-CMedical Physician Assistant1760808703
- Stephen Mifsud, DOEmergency Medicine Physician1518007400
Verify Erica Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
Search for license MA059757Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average physician assistant in 2024
122 Medicare Part D claims for 91 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Azithromycin21 claims
- Prednisone17 claims
- Amoxicillin15 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 82.5 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).
Bills Medicare through one group practice
- ON Demand Urgent Care Group PCPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erica Williams among 8,020 physician assistant records in Pennsylvania
Erica Williams, PA-C is one of 8,020 physician assistant records with a practice address in Pennsylvania. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 53% of them.
- NPI issued2018 · 53% of these records are older, 43% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2017 · median 2018 among the 5,313 with a school on file
- Record last updated2021 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
42 physician assistant records list a practice address in Mechanicsburg
They are 42 of the 1,659 NPPES records with a practice address in Mechanicsburg, and 8,020 physician assistant records in Pennsylvania.
All 8,020 in Pennsylvania → Every provider in Mechanicsburg → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Scott Berlin, PA-CMechanicsburg, PA 170501871603316
- Laurel Books, PA-CMechanicsburg, PA 170501003860511
- Ricardo Calla, PAMechanicsburg, PA 170501306804620
- Kerry Edwards, PA-CMechanicsburg, PA 170501962653865
- Irwin Fish, PA-CMechanicsburg, PA 170501841234630
- Jeffrey Horgan, PA-CMechanicsburg, PA 170501235197229
- James Hornberger, PA-CMechanicsburg, PA 170501023087244
- Rachel Menon, MPAS, PA-CMechanicsburg, PA 170501316201932
Common questions
What is Erica Williams, PA-C's NPI number?
Erica Williams, PA-C's National Provider Identifier (NPI) is 1225515315, issued on Jul 23, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Erica Williams, PA-C located?
The NPPES record lists a practice address at 6481 Carlisle Pike, Mechanicsburg, PA, 17050. Phone: (814) 823-3900. Providers update this record themselves, so call before visiting.
How can I verify Erica Williams, PA-C's license?
NPPES lists Pennsylvania license number MA059757, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.
How much does Erica Williams, PA-C prescribe under Medicare Part D?
In 2024, Erica Williams, PA-C had 122 Medicare Part D claims for 91 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Erica Williams, PA-C's MIPS final score?
The 2023 MIPS final score is 82.5 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.