DR. ALICIA M GREFENSON PSYD, LP
NPI 1073707451
Psychologist - Clinical in Walnut Creek, CA

Q: What is Alicia Grefenson's NPI number?

The NPI number for Alicia Grefenson is 1073707451. It was assigned to this individual provider in the NPPES registry on August 29, 2007.

Q: What is Alicia Grefenson's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: Is Alicia Grefenson enrolled in Medicare?

No. Alicia Grefenson has opted out of Medicare through November 22, 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.

Q: When was this NPI record last updated?

The NPPES record for Alicia Grefenson was last updated on July 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.

Active since August 29, 2007Opted out of Medicare · through Nov 22, 2027

2970 CAMINO DIABLO STE 300, WALNUT CREEK, CA 94597(925) 282-1778 Get Directions Write a Review

NPPES record last updated: July 14, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 11, 2025, Feb 9, 2023, Nov 12, 2019 (3 updates tracked since 2019).

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About Dr. Alicia M Grefenson Psyd, Lp NPPES

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

DR. ALICIA M GREFENSON PSYD, LP (NPI 1073707451) is an individual clinical provider in Walnut Creek, California, licensed in California (31315) and active in the NPI registry since August 2007. She has opted out of Medicare through November 22, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1073707451

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameDR. ALICIA M GREFENSONCredential: PSYD, LP

Location Address2970 CAMINO DIABLO STE 300Walnut Creek, CA 94597-4001

Mailing Address2970 Camino Diablo Ste 300Walnut Creek, CA 94597-4001 · (925) 282-1778

Phone(925) 282-1778

Sole ProprietorNo

Enumeration DateAugust 29, 2007

Last NPPES UpdateJuly 14, 20253 updates tracked since enumeration

NPPES CertifiedJuly 14, 2025

✔ NPI 1073707451 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in CA · 31315

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

2970 CAMINO DIABLO STE 300, Walnut Creek, CA 94597

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Alicia M Grefenson Psyd, Lp 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 November 22, 2021 through November 22, 2027.

Opt-Out Effective DateNovember 22, 2021

Opt-Out In Effect ThroughNovember 22, 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94597 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$202.35 typical visit price

range $69.00 – $202.35

Typical copayment $50.58 (range $17.25 – $50.58)

Most-billed visit code 99205

Established Patient

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

DR. MARIA EMMA ROSA CASTRO LACOUTURE M.D.

Psychiatry & Neurology (Psychiatry)