DR. STEPHEN LEFF PH.D.
NPI 1124110291
Psychologist - Clinical in Philadelphia, PA

Q: What is Stephen Leff's NPI number?

The NPI number for Stephen Leff is 1124110291. It was assigned to this individual provider in the NPPES registry on September 28, 2006.

Q: What is Stephen Leff's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Stephen Leff was last updated on September 4, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 28, 2006

3440 MARKET ST, SUITE 200, PHILADELPHIA, PA 19104(215) 590-7555(215) 590-7387 Get Directions Write a Review

NPPES record last updated: September 4, 2012. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. Stephen Leff Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. STEPHEN LEFF PH.D. (NPI 1124110291) is an individual clinical provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (PS008578L) and active in the NPI registry since September 2006.

NPPES Registry Identity

NPI1124110291

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. STEPHEN LEFFCredential: PH.D.

Location Address3440 MARKET ST, SUITE 200Philadelphia, PA 19104-3325

Mailing Address3440 Market St, Suite 410Philadelphia, PA 19104-3325 · (215) 590-7532 · Fax (215) 590-4251

Phone(215) 590-7555

Fax(215) 590-7387

Sole ProprietorNo

Enumeration DateSeptember 28, 2006

Last NPPES UpdateSeptember 4, 2012

✔ NPI 1124110291 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in PA · PS008578L

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

3440 MARKET ST, Philadelphia, PA 19104

Open in Google Maps ↗

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. CHERIE LYNN GERSTADT PH.D.

Psychologist (Clinical)

3440 MARKET ST, 2ND FLOOR
PHILADELPHIA, PA 19104

Philadelphia County (215) 590-1306

DR. TAMI BENTON M.D.

Psychiatry & Neurology (Child & Adolescent Psychiatry)

3440 MARKET ST, SUITE 410
PHILADELPHIA, PA 19104

Philadelphia County (215) 590-7532

JASON LEWIS PH.D.

Psychologist

3440 MARKET ST, SUITE 200
PHILADELPHIA, PA 19104

Philadelphia County (215) 590-7555

DR. STEPHON PROCTOR PH.D.

Psychologist (Clinical Child & Adolescent)

3440 MARKET ST, SUITE 200
PHILADELPHIA, PA 19104

Philadelphia County (215) 590-7555

THA CHILDREN'S HOSPITAL OF PHILADELPHIA

General Acute Care Hospital (Children)

3440 MARKET ST, BEHAVIORAL HEALTH CENTER, SUITE 200
PHILADELPHIA, PA 19104

Philadelphia County (215) 590-7431

ELI MUHRER MD

Psychiatry & Neurology (Child & Adolescent Psychiatry)

3440 MARKET ST
PHILADELPHIA, PA 19104

Philadelphia County (215) 590-7555

LILLY S LA PORTA MD

Psychiatry & Neurology (Psychiatry)

3440 MARKET ST, FLOOR 2 BEHAVIORAL HEALTH CENTER
PHILADELPHIA, PA 19104

Philadelphia County (215) 590-7296

JENNIFER MALDARELLI

Psychologist (Clinical Child & Adolescent)

3440 MARKET ST, SUITE 200
PHILADELPHIA, PA 19104

Philadelphia County (215) 590-7555

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Stephen Leff's NPI number?

The NPI number for Stephen Leff is 1124110291. It was assigned to this individual provider in the NPPES registry on September 28, 2006.

Where is Stephen Leff located?

Stephen Leff practices at 3440 Market St Suite 200, Philadelphia, PA 19104. The listed phone number is (215) 590-7555.

What is Stephen Leff's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

When was this NPI record last updated?

The NPPES record for Stephen Leff was last updated on September 4, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.