William L. Kliefoth, M.D.
Surgery Physician · Langhorne, PA
William L. Kliefoth, M.D. is a surgery physician with a practice address in Langhorne, Pennsylvania, and NPI 1003844499, issued on Jun 28, 2006. Check the license (Pennsylvania OS004863L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- William L. Kliefoth
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- OS004863L PA
Self-reported in NPPES; status is on the state search - Practice location
- 240 Middletown Boulevard, Langhorne, PA 19047
- Phone
- (215) 750-6010
- Enumerated
- Jun 28, 2006
- Record last updated
- Jun 24, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (215) 750-6012
- Medicaid IDs
- 0010614860006 PA
0010614860003 PA
0010614860005 PA
0010614860004 PA - Medicare enrollment
- Enrolled (PECOS I20100823000112); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1981
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 1,867 in Pennsylvania → Look up another NPI →
Verify William L. Kliefoth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS004863LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average surgery physician in 2024
128 Medicare Part D claims for 98 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 87 claims were for opioids.
Most prescribed
- Oxycodone Hcl78 claims
- Amoxicillin-Clavulanate Potass12 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
- Aria Health Physician ServicesLanghorne, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William L. Kliefoth among 1,867 surgery physician records in Pennsylvania
William L. Kliefoth, M.D. 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 64% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1981 · median 2007 among the 932 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 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 Langhorne → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Jeffrey Anderson, MDLanghorne, PA 190471841257268
- Jessica Barton, DOLanghorne, PA 190471124410386
- Burt Blackstone, DOLanghorne, PA 190471851358246
- Michael Bono, MDLanghorne, PA 190471487690228
- Esther Cha, M.D.Langhorne, PA 190471912327750
- Garvey Choi, D.O.Langhorne, PA 190471023031317
- George Costantino, M.D.Langhorne, PA 190471669496642
- Maxim Gluhovsky, M.D.Langhorne, PA 190471700076999
Common questions
What is William L. Kliefoth, M.D.'s NPI number?
William L. Kliefoth, M.D.'s National Provider Identifier (NPI) is 1003844499, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William L. Kliefoth, M.D. located?
The NPPES record lists a practice address at 240 Middletown Boulevard, Langhorne, PA, 19047. Phone: (215) 750-6010. Providers update this record themselves, so call before visiting.
How can I verify William L. Kliefoth, M.D.'s license?
NPPES lists Pennsylvania license number OS004863L, 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 L. Kliefoth, M.D. prescribe under Medicare Part D?
In 2024, William L. Kliefoth, M.D. had 128 Medicare Part D claims for 98 beneficiaries; the average among surgery physician prescribers was 147. 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.