1. Home
  2. Directory
  3. California
  4. Lancaster
  5. Counselor
  6. NPI Profile

LEONARD HOULKER
NPI 1588068613
Counselor - Addiction (Substance Use Disorder) in Lancaster, CA

Active since October 17, 2014
44900 60TH ST W, LANCASTER, CA 93536(661) 945-8458 Get Directions Write a Review

NPPES record last updated: October 17, 2014. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Leonard Houlker NPPES

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

LEONARD HOULKER (NPI 1588068613) is an individual addiction (substance use disorder) provider in Lancaster, California and active in the NPI registry since October 2014.

NPPES Registry Identity

NPI1588068613
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameLEONARD HOULKER
Location Address44900 60TH ST WLancaster, CA 93536-7618
Mailing Address44406 Watford AveLancaster, CA 93535-3102
Phone(661) 945-8458
Sole ProprietorYes
Enumeration DateOctober 17, 2014
✔ NPI 1588068613 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
44900 60TH ST W, Lancaster, CA 93536
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. VIOLETA VALLEJO-SINAVSKY M.D.
Internal Medicine
44900 60TH ST W
LANCASTER, CA 93536
Los Angeles County (661) 948-8581
CAROL F STOWE R.N., C.R.N.A.
Nurse Anesthetist, Certified Registered
44900 60TH ST W
LANCASTER, CA 93536
Los Angeles County (661) 948-8581
DR. NANCY LOUISE FERREL M.D.
Emergency Medicine
44900 60TH ST W
LANCASTER, CA 93536
Los Angeles County (661) 948-8581
ROSALIND LILLY R.N., N.P.
Nurse Practitioner
44900 60TH ST W
LANCASTER, CA 93536
Los Angeles County (661) 948-8581
DR. CANAGARETNAM CHANDRADAS M.D.
Internal Medicine
44900 60TH ST W
LANCASTER, CA 93536
Los Angeles County (661) 948-8581
MS. LESSETTE PLASCENCIA CETTO RNP
Nurse Practitioner (Pediatrics)
44900 60TH ST W
LANCASTER, CA 93536
Los Angeles County (661) 945-8303
NANCY A BREEN R. N., N.P.
Nurse Practitioner
44900 60TH ST W
LANCASTER, CA 93536
Los Angeles County (661) 948-8581
COUNTY OF LOS ANGELES
Obstetrics & Gynecology
44900 60TH ST W
LANCASTER, CA 93536
Los Angeles County (323) 890-7509

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 Leonard Houlker's NPI number?

The NPI number for Leonard Houlker is 1588068613. It was assigned to this individual provider in the NPPES registry on October 17, 2014.

Where is Leonard Houlker located?

Leonard Houlker practices at 44900 60th St W, Lancaster, CA 93536. The listed phone number is (661) 945-8458.

What is Leonard Houlker's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for Leonard Houlker was last updated on October 17, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.