ALEXANDRA MATTHEWS PH.D.
NPI 1679926786
Psychologist - Cognitive & Behavioral in Mill Valley, CA

Q: What is Alexandra Matthews's NPI number?

The NPI number for Alexandra Matthews is 1679926786. It was assigned to this individual provider in the NPPES registry on July 14, 2016.

Q: What is Alexandra Matthews's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Cognitive & Behavioral, with taxonomy code 103TB0200X.

Q: Is Alexandra Matthews enrolled in Medicare?

No. Alexandra Matthews has opted out of Medicare through October 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

Active since July 14, 2016Opted out of Medicare · through Oct 1, 2027

275 MILLER AVE STE 203, MILL VALLEY, CA 94941(415) 388-0800 Get Directions Write a Review

NPPES record last updated: July 14, 2016. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Alexandra Matthews Ph.d. NPPES

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

ALEXANDRA MATTHEWS PH.D. (NPI 1679926786) is an individual cognitive & behavioral provider in Mill Valley, California, licensed in California (PSY16219) and active in the NPI registry since July 2016. She has opted out of Medicare through October 1, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1679926786

Entity TypeIndividualFemale

Primary Taxonomy103TB0200X

Provider Legal NameALEXANDRA MATTHEWSCredential: PH.D.

Location Address275 MILLER AVE STE 203Mill Valley, CA 94941-2851

Mailing Address275 Miller Ave Ste 203Mill Valley, CA 94941-2851 · (415) 388-0800

Phone(415) 388-0800

Sole ProprietorYes

Enumeration DateJuly 14, 2016

✔ NPI 1679926786 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · Cognitive & BehavioralBehavioral Health & Social Service Providers

Taxonomy Code103TB0200X

License✔ Licensed in CA · PSY16219

Definition

A psychologist who reflects an experimental-clinical approach distinguished by use of principles of human learning and development and theories of cognitive processing to promote meaningful change in maladaptive human behavior and thinking.

Also ListedClinical NeuropsychologistTaxonomy 103G00000X · License PSY16219 (CA)

275 MILLER AVE STE 203, Mill Valley, CA 94941

Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Alexandra Matthews Ph.d. 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 October 1, 2017 through October 1, 2027.

Opt-Out Effective DateOctober 1, 2017

Opt-Out In Effect ThroughOctober 1, 2027Opt-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.

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 Alexandra Matthews's NPI number?

The NPI number for Alexandra Matthews is 1679926786. It was assigned to this individual provider in the NPPES registry on July 14, 2016.

Where is Alexandra Matthews located?

Alexandra Matthews practices at 275 Miller Ave Ste 203, Mill Valley, CA 94941. The listed phone number is (415) 388-0800.

What is Alexandra Matthews's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Cognitive & Behavioral, with taxonomy code 103TB0200X.

Is Alexandra Matthews enrolled in Medicare?

No. Alexandra Matthews has opted out of Medicare through October 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Alexandra Matthews was last updated on July 14, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.