Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Leo F Fenzel Jr., PH.D.

Q: What is the NPI number for Leo Fenzel?

The National Provider Identifier (NPI) for Leo Fenzel is 1124106000, a Type 1 (individual) record in the CMS NPPES registry.

Psychologist in Towson, MD · enumerated 2006.

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

National Provider Identifier

1124106000

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Registry record

Entity type Individual (Type 1)

Name Dr. Leo F Fenzel Jr.

Credential PH.D.

Sex Male

Practice address Towson, MD, 21204

Phone (410) 617-2640

Fax (410) 617-5097

Enumeration date Nov 1, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 02810 (MD) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
02810	Other	MD	PSYCHOLOGIST LICENSE

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 Leo Fenzel?

The National Provider Identifier (NPI) for Leo Fenzel is 1124106000, a Type 1 (individual) record in the CMS NPPES registry.

Where does Leo Fenzel practice?

The practice location on file with NPPES is in Towson, MD. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Susan Mehlman Psychologist · Towson, MD NPI 1780648634 Howard Reznick Clinical Social Worker · Baltimore, MD NPI 1952455982 Howard Reznick, Lcsw --C, P. A. Clinical Social Worker · Baltimore, MD NPI 1922153964 Emily Samuelson Psychologist · Towson, MD NPI 1801938527 Anthony Parente Professional Counselor · Towson, MD NPI 1811039274 David Waltos Psychiatry Physician · Towson, MD NPI 1871621342 Center for Family Resolution Mental Health Counselor · Towson, MD NPI 1336345396 Jeanne Sweeney Professional Counselor · Towson, MD NPI 1326231796

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