Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mark S. Sofair-Fisch, Phd

Q: What type of organization is Mark S. Sofair-Fisch, Phd?

Mark S. Sofair-Fisch, Phd is registered in NPPES as a Clinical Psychologist (its primary provider taxonomy).

Clinical Psychologist in Lawrenceville, NJ · enumerated 2007 · authorized official Mark Sofair-Fisch, Psychologist.

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

National Provider Identifier

1750413217

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Registry record

Entity type Organization (Type 2)

Legal business name Mark S. Sofair-Fisch, Phd

Practice address 2737 Princeton Pike, Lawrenceville, NJ, 08648

Phone (609) 883-2577

Fax (609) 883-2092

Enumeration date Mar 11, 2007

Last updated in NPPES May 13, 2009

Taxonomy & classification

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 37LC000043500 (NJ) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 35S100432500 (NJ) Primary

Authorized official

Name Mark Sofair-Fisch

Title Psychologist

Phone (973) 669-3333

Other identifiers

Identifier	Type	State	Issuer
469819000	Other	NJ	MAGELLAN

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 type of organization is Mark S. Sofair-Fisch, Phd?

Mark S. Sofair-Fisch, Phd is registered in NPPES as a Clinical Psychologist (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

Browse all →

Tamara Sofair-Fisch Clinical Psychologist · Lawrenceville, NJ NPI 1184670119 Robin Cooper-Fleming Psychologist · Lawrenceville, NJ NPI 1528014255 Mark Sofair-Fisch Clinical Psychologist · Lawrenceville, NJ NPI 1255370953 Advance Thru Psychotherapy & Family Development, PA Clinical Psychologist · Lawrenceville, NJ NPI 1568594026

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-13.