What is John Wolff's NPI number?

John Wolff's National Provider Identifier (NPI) is 1902069818, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Wolff's specialty?

John Wolff is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).

Where is John Wolff located?

John Wolff's practice location on file with NPPES is 120 W 2nd St, Duluth, MN 55802-2017.

What is John Wolff's phone number?

The practice phone number listed in the NPPES registry for John Wolff is (218) 728-4491.

Does John Wolff accept Medicare?

John Wolff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is John Wolff's NPI active?

Yes — John Wolff's NPI (1902069818) is active in the NPPES registry as of the last update on 2024-09-18.

IndividualActiveAccepts Medicare

John Wolff, MA, LMFT

NPI 1902069818 · Marriage & Family Therapist · Duluth, MN

Enrolled with Medicare as Practitioner - Marriage and Family Therapist · source: CMS PECOS Public Provider Enrollment (2026.04.01)

John Wolff, MA, LMFT is a Marriage & Family Therapist provider in Duluth, MN (NPI 1902069818).

Provider details

NPI number: 1902069818
Entity type: Individual
Primary specialty: Marriage & Family TherapistBehavioral Health & Social Service Providers
Credential: MA, LMFT
Sex: Male
Sole proprietor: No
License: 1840 (MN)

Specialties & taxonomies

Marriage & Family TherapistPrimary106H00000XLicense 1840 (MN)
Behavioral Health & Social Service Providers

Profile Score

Detailed profile(96/100 index)

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

Registry tenure38% of score
17 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
6 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

120 W 2nd St

Duluth, MN 55802-2017

Phone: (218) 728-4491

Fax: (218) 302-8698

Street-level locationGet directions

More MN providers

Mailing address

1401 East 1st Street

Duluth, MN 55805-2407

Additional practice locations (5)

40 11th St
Cloquet, MN 55720-1817
Phone: (218) 879-4559
Fax: (218) 879-0282
810 E 4th St
Duluth, MN 55805-2147
Phone: (218) 728-4491
Fax: (218) 302-8698
1401 East 1st Street
Duluth, MN 55805-2407
Phone: (218) 728-4491
Fax: (218) 302-8698
2230 Como Ave
Saint Paul, MN 55108-1720
Phone: (651) 255-2233
Fax: (651) 635-0454
325 11th Ave
Two Harbors, MN 55616-1300
Phone: (218) 834-5520
Fax: (218) 834-4264

Enumerated: 2008-07-10
Last updated: 2024-09-18
Certified: 2024-09-18

Frequently asked questions

What is John Wolff's NPI number?: John Wolff's National Provider Identifier (NPI) is 1902069818, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is John Wolff's specialty?: John Wolff is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
Where is John Wolff located?: John Wolff's practice location on file with NPPES is 120 W 2nd St, Duluth, MN 55802-2017.
What is John Wolff's phone number?: The practice phone number listed in the NPPES registry for John Wolff is (218) 728-4491.
Does John Wolff accept Medicare?: John Wolff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is John Wolff's NPI active?: Yes — John Wolff's NPI (1902069818) is active in the NPPES registry as of the last update on 2024-09-18.

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