Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Douglas A Tesnow, L.P.C.

Professional Counselor in Mt Prospect, IL · enumerated 2011 · practices at Search, Inc..

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

National Provider Identifier

1255610085

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Registry record

Entity type Individual (Type 1)

Name Mr. Douglas A Tesnow

Credential L.P.C.

Sex Male

Practice address 625 Slawin Ct, Mt Prospect, IL, 60056

Phone (847) 789-7155

Enumeration date Aug 10, 2011

Last updated in NPPES Aug 10, 2011

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 178.006976 (IL) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

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

Is NPI 1255610085 active?

Yes, as of the latest NPPES snapshot, NPI 1255610085 is active (record last updated 2011-08-10).

How do I verify Douglas Tesnow's NPI record?

Cross-check NPI 1255610085 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Robert Jespersen Psychiatry Physician · Mount Prospect, IL NPI 1407939630 Search, Inc. Intellectual and/or Developmental Disabilities Community Based Residential Treatment Facility · Mount Prospect, IL NPI 1871649145 Rachel Haught Professional Counselor · Mount Prospect, IL NPI 1508042987 Katie Schmid Mental Health Counselor · Mount Prospect, IL NPI 1306162714 Christine Zanca Intellectual and/or Developmental Disabilities Community Based Residential Treatment Facility · Mt Prospect, IL NPI 1851675680 James Sandrolini Social Worker · Mt Prospect, IL NPI 1699059279 Nicole Kioussis Professional Counselor · Mount Prospect, IL NPI 1629491261 Kirsten Dvorak Behavior Analyst · Mt Prospect, IL NPI 1801273966

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-10.