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

MR. DONALD L. KNOLL M.S.W.
NPI 1649263237
Counselor - Addiction (Substance Use Disorder) in San Antonio, TX

Q: What is Donald Knoll's NPI number?

The NPI number for Donald Knoll is 1649263237. It was assigned to this individual provider in the NPPES registry on August 30, 2005.

Q: What is Donald Knoll's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Donald Knoll 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 32 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.

Active since August 30, 2005

406 WOOD SHADOW ST, SAN ANTONIO, TX 78216(210) 496-0579(210) 496-0579 Get Directions Write a Review

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

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Mr. Donald L. Knoll M.s.w. NPPES

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

MR. DONALD L. KNOLL M.S.W. (NPI 1649263237) is an individual addiction (substance use disorder) provider in San Antonio, Texas, licensed in Texas (5010) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1649263237

Entity TypeIndividualMale

Primary Taxonomy101YA0400X

Provider Legal NameMR. DONALD L. KNOLLCredential: M.S.W.

Location Address406 WOOD SHADOW STSan Antonio, TX 78216-1636

Mailing Address406 Wood Shadow StSan Antonio, TX 78216-1636 · (210) 496-0579 · Fax (210) 496-0579

Phone(210) 496-0579

Fax(210) 496-0579

Sole ProprietorNo

Enumeration DateAugust 30, 2005

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1649263237 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers

Taxonomy Code101YA0400X

License✔ Licensed in TX · 5010

Also ListedSocial Worker · ClinicalTaxonomy 1041C0700X · License 01452 (TX)

406 WOOD SHADOW ST, San Antonio, TX 78216

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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 Donald Knoll's NPI number?

The NPI number for Donald Knoll is 1649263237. It was assigned to this individual provider in the NPPES registry on August 30, 2005.

Where is Donald Knoll located?

Donald Knoll practices at 406 Wood Shadow St, San Antonio, TX 78216. The listed phone number is (210) 496-0579.

What is Donald Knoll'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 Donald Knoll 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 32 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.