William R. Swayser, DO
Hospitalist Physician · Allentown, PA
William R. Swayser, DO is a hospitalist physician with a practice address in Allentown, Pennsylvania, and NPI 1609828300, issued on May 17, 2006. Check the license (Pennsylvania OS007209L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William R. Swayser
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- OS007209L PA
Self-reported in NPPES; status is on the state search - Practice location
- 1255 S Cedar Crest Blvd, Allentown, PA 18103
- Phone
- (610) 437-9006
- Enumerated
- May 17, 2006
- Record last updated
- Mar 7, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (610) 437-1942
- Medicaid ID
- 0013998820004 PA
- Medicare enrollment
- Enrolled (PECOS I20050906000539); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1989
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 1,424 in Pennsylvania → Look up another NPI →
Also registered at 1255 S Cedar Crest Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William R. Swayser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS007209LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average hospitalist physician in 2024
213 Medicare Part D claims for 93 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Pantoprazole Sodium14 claims
- Eliquis13 claims
- Metoprolol Succinate11 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
- Lehigh Valley Physician GroupLaurys Station, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William R. Swayser among 1,424 hospitalist physician records in Pennsylvania
William R. Swayser, DO is one of 1,424 hospitalist physician records with a practice address in Pennsylvania. 94% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 83% newer
- In a Medicare fileYes · 94% of these records are
- In the CMS Doctors and Clinicians fileYes · 87% of these records are
- Graduated1989 · median 2011 among the 1,236 with a school on file
- Record last updated2019 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
86 hospitalist physician records list a practice address in Allentown
They are 86 of the 5,904 NPPES records with a practice address in Allentown, and 1,424 hospitalist physician records in Pennsylvania.
All 1,424 in Pennsylvania → Every provider in Allentown → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Ravindra Bhati, M.D.Allentown, PA 181031821198912
- Craig Chuhran, MDAllentown, PA 181031215136684
- Don Chung, M.D.Allentown, PA 181031477553964
- Jeaninne Einfalt, DOAllentown, PA 181031154399194
- Bala Ganesan, MDAllentown, PA 181031760692263
- Paul Layden, MDAllentown, PA 181031144423856
- Vipul Makwana, M.D.Allentown, PA 181031326035239
- Greg Miller, DOAllentown, PA 181031487683025
Common questions
What is William R. Swayser, DO's NPI number?
William R. Swayser, DO's National Provider Identifier (NPI) is 1609828300, issued on May 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William R. Swayser, DO located?
The NPPES record lists a practice address at 1255 S Cedar Crest Blvd, Allentown, PA, 18103. Phone: (610) 437-9006. Providers update this record themselves, so call before visiting.
How can I verify William R. Swayser, DO's license?
NPPES lists Pennsylvania license number OS007209L, 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 R. Swayser, DO prescribe under Medicare Part D?
In 2024, William R. Swayser, DO had 213 Medicare Part D claims for 93 beneficiaries; the average among hospitalist physician prescribers was 521. 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.