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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. WILLIAM LEO COOK LCPC
NPI 1780677302
Counselor - Professional in Owings Mills, MD

Active since August 30, 2005
9199 REISTERSTOWN RD, SUITE 105-B, OWINGS MILLS, MD 21117(410) 356-8260(410) 356-8299 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mr. William Leo Cook Lcpc NPPES

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

MR. WILLIAM LEO COOK LCPC (NPI 1780677302) is an individual professional provider in Owings Mills, Maryland, licensed in Maryland (LC1656) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1780677302
Entity TypeIndividualMale
Primary Taxonomy101YP2500X
Provider Legal NameMR. WILLIAM LEO COOKCredential: LCPC
Location Address9199 REISTERSTOWN RD, SUITE 105-BOwings Mills, MD 21117-4520
Mailing Address6605 Wexford LnEldersburg, MD 21784-6261 · (410) 596-6514
Phone(410) 356-8260
Fax(410) 356-8299
Sole ProprietorNo
Enumeration DateAugust 30, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1780677302 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License✔ Licensed in MD · LC1656
9199 REISTERSTOWN RD, Owings Mills, MD 21117
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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. EVE BROTMAN BAND PH.D.
Psychologist (Clinical)
9199 REISTERSTOWN RD, SUITE 210-C
OWINGS MILLS, MD 21117
Baltimore County (410) 902-0434
DR. TAMMI DAWN DAVIS M.D.
Family Medicine
9199 REISTERSTOWN RD, SUITE 203B
OWINGS MILLS, MD 21117
Baltimore County (419) 591-3406
VALLEY DENTAL ASSOCIATES LLC
Dentist (General Practice)
9199 REISTERSTOWN RD, SUITE 206 B
OWINGS MILLS, MD 21117
Baltimore County (410) 363-2525
MR. MARK L FRADKIN L.AC.
Acupuncturist
9199 REISTERSTOWN RD, SUITE 211C
OWINGS MILLS, MD 21117
Baltimore County (410) 363-7254
DR. KELLY-MARIE THI BETTS DDS
Dentist (General Practice)
9199 REISTERSTOWN RD
OWINGS MILLS, MD 21117
Baltimore County (410) 363-2525
JOSEPH BERK MD PA
Pediatrics
9199 REISTERSTOWN RD, SUITE 207A
OWINGS MILLS, MD 21117
Baltimore County (410) 654-4525
MS. LYDIA SANTIAGO LCSW-C, CAC-AD
Social Worker
9199 REISTERSTOWN RD
OWINGS MILLS, MD 21117
Baltimore County (443) 743-9687
FALL PREVENTION AND STROKE REHAB PHYSICIAN, LLC
Clinic/Center (Medical Specialty)
9199 REISTERSTOWN RD
OWINGS MILLS, MD 21117
Baltimore County (443) 898-8160

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 Cook's NPI number?

The NPI number for William Cook is 1780677302. It was assigned to this individual provider in the NPPES registry on August 30, 2005.

Where is William Cook located?

William Cook practices at 9199 Reisterstown Rd Suite 105-B, Owings Mills, MD 21117. The listed phone number is (410) 356-8260.

What is William Cook's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

When was this NPI record last updated?

The NPPES record for William Cook was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 days 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.