Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marcia R Klein-Chast, D.O.

Pediatrics Physician in Langhorne, PA · enumerated 2006 · practices at We Care Pediatrics, P.C..

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

National Provider Identifier

1588682231

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Registry record

Entity type Individual (Type 1)

Name Dr. Marcia R Klein-Chast

Credential D.O.

Sex Female

Practice address 404 Middletown Blvd, Suite 306 Penns Square, Langhorne, PA, 19047

Phone (215) 269-3330

Fax (215) 269-3355

Enumeration date Jul 18, 2006

Last updated in NPPES Jun 18, 2021

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License OS009017L (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
029020	Other	PA	KEYSONE HEALTH PLAN EAST
KL29020	Other	PA	BLUE SHIELD
P1092570	Other	PA	OXFORD
2087258	Other	PA	USHC
0017143680002	Medicaid	PA	-
233044033	Other	PA	TAX ID
0171436802	Other	PA	AMERICHOICE
1103365	Other	PA	KEYSTONE MERCY

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

Where does Marcia Klein-Chast practice?

The practice location on file with NPPES is in Langhorne, PA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Marcia Klein-Chast?

The National Provider Identifier (NPI) for Marcia Klein-Chast is 1588682231, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Allison Otto Pediatrics Physician · Langhorne, PA NPI 1376576140 Denice Barnes Pediatric Adolescent Medicine Physician · Langhorne, PA NPI 1679591325 We Care Pediatrics, P.C. Pediatrics Physician · Langhorne, PA NPI 1831107440 Vasanthi Haribabu General Practice Dentistry · Langhorne, PA NPI 1326208919 Allison Ostash Pediatric Nurse Practitioner · Langhorne, PA NPI 1184265951

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-18.