Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marion Mass, M.D.

Pediatrics Physician in Sellersville, PA · enumerated 2006.

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

National Provider Identifier

1508875964

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Marion Mass

Credential M.D.

Sex Female

Practice address 700 Lawn Ave, Chop Care Network at Grandview Hospital, Sellersville, PA, 18960

Phone (215) 453-4476

Fax (215) 453-4738

Enumeration date Aug 5, 2006

Last updated in NPPES Apr 18, 2013

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MD068493L (PA) Primary

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
001755683	Medicaid	PA	-
7980701	Medicaid	NJ	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Marion Mass's NPI record?

Cross-check NPI 1508875964 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1508875964 active?

Yes, as of the latest NPPES snapshot, NPI 1508875964 is active (record last updated 2013-04-18).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-18.