Jonathan Kessler, LCSW
NPI 1821318114 · Clinical Social Worker · New York, NY
Jonathan Kessler, LCSW is a Clinical Social Worker provider in New York, NY (NPI 1821318114).
Provider details
- NPI number
- 1821318114
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 078153 (NY)
Specialties & taxonomies
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
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 40 Flatbush Avenue Ext8th FloorBrooklyn, NY 11201-2903Phone: (718) 439-4324
- 423 E 23rd St Fl 15New York, NY 10010-5011Phone: (212) 686-7500
Registry dates
- Enumerated
- 2010-06-09
- Last updated
- 2020-02-26
- Certified
- 2020-02-26
Frequently asked questions
- What is Jonathan Kessler's NPI number?
- Jonathan Kessler's National Provider Identifier (NPI) is 1821318114, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Kessler's specialty?
- Jonathan Kessler is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Jonathan Kessler located?
- Jonathan Kessler's practice location on file with NPPES is 353 Lexington Ave Ste 200, New York, NY 10016-0977.
- What is Jonathan Kessler's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Kessler is (917) 859-3874.
- Is Jonathan Kessler's NPI active?
- Yes — Jonathan Kessler's NPI (1821318114) is active in the NPPES registry as of the last update on 2020-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.