William A. Swagler, D.O.
Internal Medicine Physician · Erie, PA
William A. Swagler, D.O. is an internal medicine physician with a practice address in Erie, Pennsylvania, and NPI 1275532475, issued on Jul 19, 2005. Check the license (Pennsylvania OS009222L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William A. Swagler
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- OS009222L PA
Self-reported in NPPES; status is on the state search - Practice location
- 2010 W. 38TH St., Erie, PA 16508
- Phone
- (814) 868-5481
- Enumerated
- Jul 19, 2005
- Record last updated
- Feb 24, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (814) 864-7608
- Medicaid ID
- 0016969940005 PA
- Medicare enrollment
- Enrolled (PECOS I20130322000172); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1995
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Verify William A. Swagler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS009222LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
376 Medicare Part D claims for 165 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 12 claims were for opioids.
Most prescribed
- Prednisone46 claims
- Cefuroxime31 claims
- Metoprolol Succinate23 claims
- Amoxicillin-Clavulanate Potass18 claims
- Azithromycin12 claims
- Pantoprazole Sodium12 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.
Bills Medicare through one group practice
- Great Lakes Physician Practice PCJamestown, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William A. Swagler among 7,300 internal medicine physician records in Pennsylvania
William A. Swagler, D.O. is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1995 · median 2008 among the 4,208 with a school on file
- Record last updated2010 · 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 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
100 internal medicine physician records list a practice address in Erie
They are 100 of the 5,083 NPPES records with a practice address in Erie, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Erie → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Daniel BarberoErie, PA 165081710986534
- John Ferretti, DOErie, PA 165081477518777
- Eric Milie, DOErie, PA 165081396795100
- Archana AnandErie, PA 165071215231998
- Maggie BensonErie, PA 165071710120555
- Gerald Bishop, MDErie, PA 165071316913338
- Edward Blounts, D.O.Erie, PA 165091922310721
- Garrett Clark, D.O.Erie, PA 165091063677524
Common questions
What is William A. Swagler, D.O.'s NPI number?
William A. Swagler, D.O.'s National Provider Identifier (NPI) is 1275532475, issued on Jul 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William A. Swagler, D.O. located?
The NPPES record lists a practice address at 2010 W. 38TH St., Erie, PA, 16508. Phone: (814) 868-5481. Providers update this record themselves, so call before visiting.
How can I verify William A. Swagler, D.O.'s license?
NPPES lists Pennsylvania license number OS009222L, 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.
How much does William A. Swagler, D.O. prescribe under Medicare Part D?
In 2024, William A. Swagler, D.O. had 376 Medicare Part D claims for 165 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.
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.