What is Joanna Mahto's NPI number?

Joanna Mahto's National Provider Identifier (NPI) is 1891135828, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Joanna Mahto's specialty?

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

Where is Joanna Mahto located?

Joanna Mahto's practice location on file with NPPES is 1130 Nw 22nd Ave Ste 320, Portland, OR 97210-2970.

What is Joanna Mahto's phone number?

The practice phone number listed in the NPPES registry for Joanna Mahto is (503) 295-2546.

Is Joanna Mahto's NPI active?

Yes — Joanna Mahto's NPI (1891135828) is active in the NPPES registry as of the last update on 2023-02-13.

IndividualActive

Joanna Mahto, LCSW

NPI 1891135828 · Clinical Social Worker · Portland, OR

Joanna Mahto, LCSW is a Clinical Social Worker provider in Portland, OR (NPI 1891135828).

Provider details

NPI number: 1891135828
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Credential: LCSW
Sex: Female
Sole proprietor: No

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700XLicense L6642 (OR)
Behavioral Health & Social Service Providers
Social Worker104100000X
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(81/100 index)

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

Registry tenure38% of score
13 yrs in NPPES registry
Profile completeness38% of score
83% 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

1130 Nw 22nd Ave Ste 320

Portland, OR 97210-2970

Phone: (503) 295-2546

Fax: (503) 790-1248

Street-level locationGet directions

More OR providers

Mailing address

975 Se Sandy Blvd Ste 160

Portland, OR 97214-2498

Additional practice locations (2)

3415 Se Powell Blvd
Portland, OR 97202-3371
Phone: (503) 234-9591
3181 Sw Sam Jackson Park Rd
Portland, OR 97239-3098
Phone: (503) 494-2273
Fax: (503) 494-7979

Enumerated: 2013-07-05
Last updated: 2023-02-13
Certified: 2023-02-13

Frequently asked questions

What is Joanna Mahto's NPI number?: Joanna Mahto's National Provider Identifier (NPI) is 1891135828, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Joanna Mahto's specialty?: Joanna Mahto is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
Where is Joanna Mahto located?: Joanna Mahto's practice location on file with NPPES is 1130 Nw 22nd Ave Ste 320, Portland, OR 97210-2970.
What is Joanna Mahto's phone number?: The practice phone number listed in the NPPES registry for Joanna Mahto is (503) 295-2546.
Is Joanna Mahto's NPI active?: Yes — Joanna Mahto's NPI (1891135828) is active in the NPPES registry as of the last update on 2023-02-13.

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