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

CALLISYN ZIELENSKI
NPI 1861945461
Social Worker in San Francisco, CA

Active since July 29, 2016
3450 3RD ST STE 1C, SAN FRANCISCO, CA 94124(154) 437-3990 Get Directions Write a Review

NPPES record last updated: July 10, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 10, 2026, Jul 27, 2023, May 9, 2023 and 4 more (7 updates tracked since 2019).

About Callisyn Zielenski NPPES

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

CALLISYN ZIELENSKI (NPI 1861945461) is an individual social worker in San Francisco, California, licensed in California (125791) and active in the NPI registry since July 2016.

NPPES Registry Identity

NPI1861945461
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameCALLISYN ZIELENSKI
Location Address3450 3RD ST STE 1CSan Francisco, CA 94124-1444
Mailing Address3450 3rd St Ste 1cSan Francisco, CA 94124-1444 · (154) 437-3990
Phone(154) 437-3990
Sole ProprietorNo
Enumeration DateJuly 29, 2016
Last NPPES UpdateJuly 10, 20267 updates tracked since enumeration
NPPES CertifiedJuly 10, 2026
✔ NPI 1861945461 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in CA · 125791
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
3450 3RD ST STE 1C, San Francisco, CA 94124
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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.

SUZANNE COLEMAN YOUNG
Student in an Organized Health Care Education/Training Program
3450 3RD ST STE 1C
SAN FRANCISCO, CA 94124
San Francisco County (415) 437-3990
DESIREE RAKELA
Student in an Organized Health Care Education/Training Program
3450 3RD ST STE 1C
SAN FRANCISCO, CA 94124
San Francisco County (650) 420-5798
PILAR SOLH WINTER
Marriage & Family Therapist
3450 3RD ST STE 1C
SAN FRANCISCO, CA 94124
San Francisco County (650) 420-5798
ISELA GONZALEZ
Marriage & Family Therapist
3450 3RD ST STE 1C
SAN FRANCISCO, CA 94124
San Francisco County (415) 437-3990
MRS. DARECIA MILLER-MCCANT LCSW
Social Worker (Clinical)
3450 3RD ST STE 1C
SAN FRANCISCO, CA 94124
San Francisco County (415) 437-3990
ATENAS ALEJANDRA GUTIERREZ
Student in an Organized Health Care Education/Training Program
3450 3RD ST STE 1C
SAN FRANCISCO, CA 94124
San Francisco County (415) 437-3990
IESHA NICOLE BROOKS
Marriage & Family Therapist
3450 3RD ST STE 1C
SAN FRANCISCO, CA 94124
San Francisco County (415) 437-3990
ALEJANDRA JUAREZ SHUTTLEWORTH
Marriage & Family Therapist
3450 3RD ST STE 1C
SAN FRANCISCO, CA 94124
San Francisco County (415) 437-3990

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 Callisyn Zielenski's NPI number?

The NPI number for Callisyn Zielenski is 1861945461. It was assigned to this individual provider in the NPPES registry on July 29, 2016.

Where is Callisyn Zielenski located?

Callisyn Zielenski practices at 3450 3rd St Ste 1C, San Francisco, CA 94124. The listed phone number is (154) 437-3990.

What is Callisyn Zielenski's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

When was this NPI record last updated?

The NPPES record for Callisyn Zielenski was last updated on July 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 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.