Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katelyn Jessmer, LMHC, CASAC

Mental Health Counselor in Watertown, NY · enumerated 2021 · practices at Credo Community Center for the Treatment of Addictions.

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

National Provider Identifier

1689264939

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Registry record

Entity type Individual (Type 1)

Name Katelyn Jessmer

Credential LMHC, CASAC

Sex Female

Practice address 595 W Main St, Watertown, NY, 13601

Phone (315) 788-1530

Enumeration date Jan 21, 2021

Last updated in NPPES Jul 25, 2024

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 009535 (NY) Secondary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 009535 (NY) Primary

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

Where does Katelyn Jessmer practice?

The practice location on file with NPPES is in Watertown, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Katelyn Jessmer?

The National Provider Identifier (NPI) for Katelyn Jessmer is 1689264939, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Mary Martin Addiction (Substance Use Disorder) Registered Nurse · Watertown, NY NPI 1205902624 Nancy Stark Clinical Social Worker · Watertown, NY NPI 1750543401 Patricia Fralick Addiction (Substance Use Disorder) Counselor · Watertown, NY NPI 1609023167 Kim Downey Addiction (Substance Use Disorder) Counselor · Watertown, NY NPI 1013164565 Chris Mcdonald Addiction (Substance Use Disorder) Counselor · Watertown, NY NPI 1699922146 Joanne Nugent Addiction (Substance Use Disorder) Counselor · Watertown, NY NPI 1851548325 Randy Gardner Addiction (Substance Use Disorder) Counselor · Watertown, NY NPI 1275780728 Heather Oatman Mental Health Counselor · Watertown, NY NPI 1255588703

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-25.