Callisyn Zielenski
NPI 1861945461 · Social Worker · San Francisco, CA
Callisyn Zielenski is a Social Worker provider in San Francisco, CA (NPI 1861945461).
Provider details
- NPI number
- 1861945461
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 84949 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-07-29
- Last updated
- 2023-08-01
- Certified
- 2023-08-01
Frequently asked questions
- What is Callisyn Zielenski's NPI number?
- Callisyn Zielenski's National Provider Identifier (NPI) is 1861945461, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Callisyn Zielenski's specialty?
- Callisyn Zielenski is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Callisyn Zielenski located?
- Callisyn Zielenski's practice location on file with NPPES is 3450 3rd St Ste 1c, San Francisco, CA 94124-1444.
- What is Callisyn Zielenski's phone number?
- The practice phone number listed in the NPPES registry for Callisyn Zielenski is (154) 437-3990.
- Is Callisyn Zielenski's NPI active?
- Yes — Callisyn Zielenski's NPI (1861945461) is active in the NPPES registry as of the last update on 2023-08-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.