Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Carl Nelson Liedman, D.O.

Family Medicine Physician in Philadelphia, PA · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1164427910

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Registry record

Entity type Individual (Type 1)

Name Dr. Carl Nelson Liedman

Credential D.O.

Sex Male

Practice address 841 E Hunting Park Ave, Suite 110, Philadelphia, PA, 19124

Phone (215) 535-4494

Fax (215) 535-4203

Enumeration date Jun 17, 2005

Last updated in NPPES Sep 19, 2016

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 193400000X (PA) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License OS004520L (PA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
0075139402	Other	PA	AMERICHOICE
6128979	Other	PA	CIGNA
100008	Other	PA	KEYSTONE MERCY
110159242	Other	PA	TRAVELORS
173358	Other	PA	BLUE SHIELD
108074	Other	PA	AETNA
PA10333	Other	PA	ELDER HEALTH
00422	Other	PA	HEALTH PARTNERS

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.

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Frequently asked questions

How do I verify Carl Liedman's NPI record?

Cross-check NPI 1164427910 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1164427910 active?

Yes, as of the latest NPPES snapshot, NPI 1164427910 is active (record last updated 2016-09-19).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-09-19.