Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William L. Kliefoth, M.D.
Surgery Physician in Langhorne, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1003844499
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Registry record
Entity type Individual (Type 1)
Name William L. Kliefoth
Credential M.D.
Sex Male
Practice address 240 Middletown Boulevard, Ste 101c, Langhorne, PA, 19047
Phone (215) 750-6010
Fax (215) 750-6012
Enumeration date Jun 28, 2006
Last updated in NPPES Jun 24, 2010
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0010614860006 | Medicaid | PA | - |
| 1286446 | Other | PA | CIGNA |
| 1324152 | Other | PA | FIRST HEALTH |
| 1382157 | Other | PA | PHCS |
| 07336 | Other | PA | HEALTH PARTNERS |
| 30003803 | Other | PA | KEYSTONE MERCY |
| 3109104 | Other | PA | AETNA HMO |
| 020054401 | Other | PA | RAILROAD MEDICARE |
| 0010614860003 | Medicaid | PA | - |
| 0010614860005 | Medicaid | PA | - |
| 136219 | Other | PA | HIGHMARK BLUE SHIELD |
| 770065 | Other | PA | UNITED HEALTHCARE |
| 0010614860004 | Medicaid | PA | - |
| 0052070000 | Other | PA | KEYSTONE, IBC |
| 01061486-03 | Other | PA | AMERICHOICE |
| 20045124 | Other | PA | AMERIHEALTH |
| 136219 | Other | PA | PERSONAL CHOICE |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1003844499 active?
Yes, as of the latest NPPES snapshot, NPI 1003844499 is active (record last updated 2010-06-24).
How do I verify William Kliefoth's NPI record?
Cross-check NPI 1003844499 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-24.