Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark Robert Oleski, MA

Psychologist in Saratoga, PA · enumerated 2006.

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

National Provider Identifier

1679643175

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Robert Oleski

Credential MA

Sex Male

Practice address 600 Creekside Dr, Suite 609, Saratoga, PA, 19464

Phone (610) 327-1631

Fax (610) 327-1199

Enumeration date Nov 9, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PS006819L (PA) Primary

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

Is NPI 1679643175 active?

Yes, as of the latest NPPES snapshot, NPI 1679643175 is active (record last updated 2007-07-08).

How do I verify Mark Oleski's NPI record?

Cross-check NPI 1679643175 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Barbara Kimball Clinical Social Worker · Sanatoga, PA NPI 1326017922 Constance Woodring Clinical Social Worker · Sanatoga, PA NPI 1942240825 Wayne Pellegrini Clinical Psychologist · Sanatoga, PA NPI 1912934092 Innovative Counseling Associates PC Mental Health Counselor · Pottstown, PA NPI 1245267129 Kristin Shaner Professional Counselor · Pottstown, PA NPI 1932137320 Michael Paat General Practice Dentistry · Pottstown, PA NPI 1881708584 Stephen Redgway Mental Health Counselor · Sanatoga, PA NPI 1588768824 Carrie Rightmire Mental Health Counselor · Sanatoga, PA NPI 1528118080

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.