NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary E Wolff, CRNP

Obstetrics & Gynecology Nurse Practitioner in Allentown, PA · enumerated 2006 · practices at Planned Parenthood Keystone.

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

National Provider Identifier

1043249600

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mary E Wolff
Credential CRNP
Sex Female
Practice address 29 N 9th St, Allentown, PA, 18101
Phone (610) 481-0481
Fax (610) 481-0481
Enumeration date Jul 3, 2006
Last updated in NPPES Oct 3, 2024

Taxonomy & licenses

363LX0001X Obstetrics & Gynecology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License UP004289G (PA) Primary

Other identifiers

Identifier Type State Issuer
1026733890014 Medicaid PA -
1026733890011 Medicaid PA -
1026733890007 Medicaid PA -
1026733890015 Medicaid PA -
1026733890013 Medicaid PA -
1026733890016 Medicaid PA -
102673389-0017 Medicaid PA -
1026733890006 Medicaid PA -

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

What is the NPI number for Mary Wolff?
The National Provider Identifier (NPI) for Mary Wolff is 1043249600, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Wolff practice?
The practice location on file with NPPES is in Allentown, PA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-03.