What is Mary Welch's NPI number?

Mary Welch's National Provider Identifier (NPI) is 1992851042, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mary Welch's specialty?

Mary Welch is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).

Where is Mary Welch located?

Mary Welch's practice location on file with NPPES is 3333 Glendale Ave, Toledo, OH 43614-2426.

What is Mary Welch's phone number?

The practice phone number listed in the NPPES registry for Mary Welch is (419) 259-2000.

Is Mary Welch's NPI active?

Yes — Mary Welch's NPI (1992851042) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

Mary Welch, MSW, LISW

NPI 1992851042 · Clinical Social Worker · Toledo, OH

Mary Welch, MSW, LISW is a Clinical Social Worker provider in Toledo, OH (NPI 1992851042).

Provider details

NPI number: 1992851042
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Credential: MSW, LISW
Sex: Female
Sole proprietor: No
License: I0009408 (OH)

Practice location

3333 Glendale Ave

Toledo, OH 43614-2426

Phone: (419) 259-2000

Fax: (419) 259-3850

Street-level locationGet directions

More OH providers

Mailing address

324 Luckey Road

Luckey, OH 43443-0027

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700XLicense I0009408 (OH)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(90/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
19 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.

Enumerated: 2007-01-25
Last updated: 2007-07-08

Frequently asked questions

What is Mary Welch's NPI number?: Mary Welch's National Provider Identifier (NPI) is 1992851042, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Mary Welch's specialty?: Mary Welch is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
Where is Mary Welch located?: Mary Welch's practice location on file with NPPES is 3333 Glendale Ave, Toledo, OH 43614-2426.
What is Mary Welch's phone number?: The practice phone number listed in the NPPES registry for Mary Welch is (419) 259-2000.
Is Mary Welch's NPI active?: Yes — Mary Welch's NPI (1992851042) is active in the NPPES registry as of the last update on 2007-07-08.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions