Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

William L. Kliefoth, MD

Individual provider Surgery Physician · NPI 1003844499

William L. Kliefoth, MD practises General Surgery in Langhorne, Pennsylvania. Graduated from Philadelphia College of Osteopathic Medicine in 1981, 45 years ago. Practices with Aria Health Physician Services, a 480-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
45
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
PA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

240 Middletown Blvd Ste 101C
Langhorne, PA 19047-1818 Not confirmed with CMS for 16 years — call before visiting
Phone: (215) 750-6010
Fax: (215) 750-6012
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence OS004863L (PA)

Record details

NPI number1003844499
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 28, 2006
Last updated in NPPESJune 24, 2010

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGENERAL SURGERY
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1981 (45 years in practice)
Group practice Aria Health Physician Services — 480 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Hernia repair - groin (open) 21 times · 97th percentile
Hernia repair (minimally invasive) 19 times · 88th percentile
Colonoscopy 1–10 times
Melanoma (skin cancer) excision 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients141
Services billed 266 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Aria Health Physician Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 480 clinicians in the practice; 12 are shown here.

Other providers in Langhorne