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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

MR. DAVID A SIGLER
NPI 1447181128
Counselor - Addiction (Substance Use Disorder) in Glendora, CA

Active since May 29, 2026
1340 E ROUTE 66 STE 106, GLENDORA, CA 91740(626) 263-5543 Get Directions Write a Review

NPPES record added: May 29, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mr. David A Sigler NPPES

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

MR. DAVID A SIGLER (NPI 1447181128) is an individual addiction (substance use disorder) provider in Glendora, California, licensed in California (25358) and active in the NPI registry since May 2026.

NPPES Registry Identity

NPI1447181128
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameMR. DAVID A SIGLER
Location Address1340 E ROUTE 66 STE 106Glendora, CA 91740-3783
Mailing Address325 Flagstaff StSan Dimas, CA 91773-1938 · (562) 336-9224
Phone(626) 263-5543
Sole ProprietorNo
Enumeration DateMay 29, 2026
NPPES CertifiedMay 29, 2026
✔ NPI 1447181128 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
License✔ Licensed in CA · 25358
1340 E ROUTE 66 STE 106, Glendora, CA 91740
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Other Providers at the Same Location NPPES 9

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

HALEY J ISMAN RADT
Counselor (Addiction (Substance Use Disorder))
1340 E ROUTE 66 STE 106
GLENDORA, CA 91740
Los Angeles County (626) 594-0881
MIKAYLA ASK
Counselor (Addiction (Substance Use Disorder))
1340 E ROUTE 66 STE 106
GLENDORA, CA 91740
Los Angeles County (626) 594-0881
MRS. KENDALL NICOLE FRAZIER CADCII
Counselor (Addiction (Substance Use Disorder))
1340 E ROUTE 66 STE 106
GLENDORA, CA 91740
Los Angeles County (626) 620-2627
VITAGEN MEDICAL CORPORATION
Psychiatry & Neurology (Psychiatry)
1340 E ROUTE 66 STE 106
GLENDORA, CA 91740
Los Angeles County (818) 292-4094
VICTORIA MORALES
Counselor (Addiction (Substance Use Disorder))
1340 E ROUTE 66 STE 106
GLENDORA, CA 91740
Los Angeles County (626) 263-5543
GLENDORA RECOVERY CENTER
Clinic/Center (Rehabilitation, Substance Use Disorder)
1340 E ROUTE 66 STE 106
GLENDORA, CA 91740
Los Angeles County (626) 594-0881
JAMIE DANIELLE PAYNE CATC-I
Counselor (Addiction (Substance Use Disorder))
1340 E ROUTE 66 STE 106
GLENDORA, CA 91740
Los Angeles County (626) 594-0881
KURTIS RICE
Counselor (Addiction (Substance Use Disorder))
1340 E ROUTE 66 STE 106
GLENDORA, CA 91740
Los Angeles County (626) 594-0881

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 David Sigler's NPI number?

The NPI number for David Sigler is 1447181128. It was assigned to this individual provider in the NPPES registry on May 29, 2026.

Where is David Sigler located?

David Sigler practices at 1340 E Route 66 Ste 106, Glendora, CA 91740. The listed phone number is (626) 263-5543.

What is David Sigler'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 David Sigler was last updated on May 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.