OrganizationActive
Diana L Theiss PHD
NPI 1396250338 · Clinical Social Worker · Sylvania, OH
Diana L Theiss PHD is a Clinical Social Worker organization in Sylvania, OH (NPI 1396250338).
Provider details
- NPI number
- 1396250338
- Entity type
- Organization
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Diana Theiss, Practice Owner(419) 843-5945
- License
- I0900183-SUPV (OH)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(69/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 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
5800 Monroe St Ste A1
Sylvania, OH 43560-2208
Phone: (419) 517-7073
Fax: (419) 517-0122
Street-level locationGet directions
Mailing address
5800 Monroe St Ste A1
Sylvania, OH 43560-2208
Other names (DBA / former)
- Doing business as
- Sylvania Therapy and Counseling
Registry dates
- Enumerated
- 2017-12-13
- Last updated
- 2023-03-02
- Certified
- 2023-03-02
Frequently asked questions
- What is Diana L Theiss PHD's NPI number?
- Diana L Theiss PHD's National Provider Identifier (NPI) is 1396250338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Diana L Theiss PHD?
- Diana L Theiss PHD is classified in the NPPES registry as Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Diana L Theiss PHD located?
- Diana L Theiss PHD's practice location on file with NPPES is 5800 Monroe St Ste A1, Sylvania, OH 43560-2208.
- What is Diana L Theiss PHD's phone number?
- The practice phone number listed in the NPPES registry for Diana L Theiss PHD is (419) 517-7073.
- Who is the authorized official for Diana L Theiss PHD?
- The authorized official listed on Diana L Theiss PHD's NPPES record is Diana Theiss, Practice Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Diana L Theiss PHD's NPI active?
- Yes — Diana L Theiss PHD's NPI (1396250338) is active in the NPPES registry as of the last update on 2023-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.