IndividualActive
John Tiedemann, LMSW
NPI 1639836869 · Clinical Social Worker · New York, NY
John Tiedemann, LMSW is a Clinical Social Worker provider in New York, NY (NPI 1639836869).
Provider details
- NPI number
- 1639836869
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Male
- Sole proprietor
- No
- License
- 106643 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(61/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
19 Union Sq W
New York, NY 10003-3304
Phone: (212) 627-9600
Street-level locationGet directions
Mailing address
145 E 15th St Apt 7f
New York, NY 10003-3537
Registry dates
- Enumerated
- 2021-11-22
- Last updated
- 2021-11-22
- Certified
- 2021-11-22
Frequently asked questions
- What is John Tiedemann's NPI number?
- John Tiedemann's National Provider Identifier (NPI) is 1639836869, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Tiedemann's specialty?
- John Tiedemann is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is John Tiedemann located?
- John Tiedemann's practice location on file with NPPES is 19 Union Sq W, New York, NY 10003-3304.
- What is John Tiedemann's phone number?
- The practice phone number listed in the NPPES registry for John Tiedemann is (212) 627-9600.
- Is John Tiedemann's NPI active?
- Yes — John Tiedemann's NPI (1639836869) is active in the NPPES registry as of the last update on 2021-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.