DR. WILLIAM C PETERSEN PH.D.
NPI 1124109400
Psychologist - Counseling in Saint Louis, MO

Active since October 17, 2006
5351 DELMAR BLVD, SAINT LOUIS, MO 63112(314) 877-0685(314) 877-0553 Get Directions Write a Review

NPPES record last updated: June 12, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. William C Petersen Ph.d. NPPES

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

DR. WILLIAM C PETERSEN PH.D. (NPI 1124109400) is an individual counseling provider in Saint Louis, Missouri, licensed in Missouri (01531) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1124109400
Entity TypeIndividualMale
Primary Taxonomy103TC1900X
Provider Legal NameDR. WILLIAM C PETERSENCredential: PH.D.
Location Address5351 DELMAR BLVDSaint Louis, MO 63112-3146
Mailing Address7106 Dale AveRichmond Heights, MO 63117-1927 · (314) 647-6303
Fax(314) 877-0553
Sole ProprietorYes
Enumeration DateOctober 17, 2006
Last NPPES UpdateJune 12, 2008
NPI 1124109400 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologist · CounselingBehavioral Health & Social Service Providers
Taxonomy Code103TC1900X
License Licensed in MO · 01531
Definition
A psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at all ages. Counseling psychology addresses the emotional, social, work, school and physical health concerns people may have at different stages in their lives, focusing on typical life stresses and more severe issues with which people may struggle as individuals and as a part of families, groups and organizations. Counseling psychologists help people with physical, emotional and mental health issues improve their sense of well-being, alleviate feelings of distress and resolve crises. They also provide assessment, diagnosis, and treatment of more severe psychological symptoms.
5351 DELMAR BLVD, Saint Louis, MO 63112

Other Identifiers 1

Medicare PIN000070864MO

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.

Psychiatry & Neurology (Psychiatry)
5351 DELMAR BLVD
SAINT LOUIS, MO 63112
Psychologist (Clinical)
5351 DELMAR BLVD, METROPOLITAN ST LOUIS PSYCHIATRIC CENTER
SAINT LOUIS, MO 63112
Psychiatry & Neurology (Psychiatry)
5351 DELMAR BLVD
SAINT LOUIS, MO 63112
Pharmacist
5351 DELMAR BLVD
SAINT LOUIS, MO 63112
Pharmacist (Psychiatric)
5351 DELMAR BLVD
SAINT LOUIS, MO 63112
Dietitian, Registered
5351 DELMAR BLVD
SAINT LOUIS, MO 63112
Internal Medicine (Adolescent Medicine)
5351 DELMAR BLVD
SAINT LOUIS, MO 63112
Nurse Practitioner (Psychiatric/Mental Health)
5351 DELMAR BLVD
SAINT LOUIS, MO 63112

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 William Petersen's NPI number?

The NPI number for William Petersen is 1124109400. It was assigned to this individual provider in the NPPES registry on October 17, 2006.

Where is William Petersen located?

William Petersen practices at 5351 Delmar Blvd, Saint Louis, MO 63112. The listed phone number is (314) 877-0685.

What is William Petersen's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Counseling, with taxonomy code 103TC1900X.

When was this NPI record last updated?

The NPPES record for William Petersen was last updated on June 12, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.