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DIANA HIRNING-JOHNSON MFT
NPI 1639409725
Marriage & Family Therapist in Davis, CA

Active since January 12, 2010Opted out of Medicare · through Jan 1, 2028
433 F ST, DAVIS, CA 95616(530) 304-0146(530) 753-9469 Get Directions Write a Review

NPPES record last updated: January 12, 2010. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Diana Hirning-johnson Mft NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DIANA HIRNING-JOHNSON MFT (NPI 1639409725) is an individual marriage & family therapist in Davis, California, licensed in California (MFC41611) and active in the NPI registry since January 2010. She has opted out of Medicare through January 1, 2028.

NPPES Registry Identity

NPI1639409725
Entity TypeIndividualFemale
Primary Taxonomy106H00000X
Provider Legal NameDIANA HIRNING-JOHNSONCredential: MFT
Location Address433 F STDavis, CA 95616-4111
Mailing Address433 F StDavis, CA 95616-4111 · (530) 304-0146 · Fax (530) 753-9469
Phone(530) 304-0146
Fax(530) 753-9469
Sole ProprietorYes
Enumeration DateJanuary 12, 2010
✔ NPI 1639409725 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers
Taxonomy Code106H00000X
License✔ Licensed in CA · MFC41611
Definition
A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.
433 F ST, Davis, CA 95616
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

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Opted out of Medicare

Diana Hirning-johnson Mft has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2024 through January 1, 2028.

Opt-Out Effective DateJanuary 1, 2024
Opt-Out In Effect ThroughJanuary 1, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. MITCHEL GREGG ADLER PSY.D.
Psychologist
433 F ST
DAVIS, CA 95616
Yolo County (530) 219-5985
DR. HELEN LOUISE KRELL MD
Psychiatry & Neurology (Child & Adolescent Psychiatry)
433 F ST
DAVIS, CA 95616
Yolo County (530) 756-7050
HALI ROWEN PH.D.
Psychologist (Clinical)
433 F ST
DAVIS, CA 95616
Yolo County (530) 756-2502
JOHN STEWART ENSIGN PHD
Psychologist (Clinical)
433 F ST
DAVIS, CA 95616
Yolo County (530) 304-0711

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Diana Hirning-johnson's NPI number?

The NPI number for Diana Hirning-johnson is 1639409725. It was assigned to this individual provider in the NPPES registry on January 12, 2010.

Where is Diana Hirning-johnson located?

Diana Hirning-johnson practices at 433 F St, Davis, CA 95616. The listed phone number is (530) 304-0146.

What is Diana Hirning-johnson's specialty?

The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.

Is Diana Hirning-johnson enrolled in Medicare?

No. Diana Hirning-johnson has opted out of Medicare through January 1, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Diana Hirning-johnson was last updated on January 12, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.