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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. PETER CRAIG CASSINI M.D.
NPI 1326088501
Psychiatry & Neurology - Neurology in Palo Alto, CA

Active since June 07, 2006Opted out of Medicare · through Oct 18, 2026
1101 WELCH RD, SUITE C-5, PALO ALTO, CA 94304(650) 324-4300(650) 329-0788 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Peter Craig Cassini M.d. NPPES

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

DR. PETER CRAIG CASSINI M.D. (NPI 1326088501) is an individual neurology provider in Palo Alto, California, licensed in California (G80202) and active in the NPI registry since June 2006. He has opted out of Medicare through October 18, 2026 and remains eligible to order and refer.

NPPES Registry Identity

NPI1326088501
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameDR. PETER CRAIG CASSINICredential: M.D.
Location Address1101 WELCH RD, SUITE C-5Palo Alto, CA 94304-1926
Mailing Address1101 Welch Rd, Suite C-5Palo Alto, CA 94304-1926 · (650) 324-4300 · Fax (650) 329-0788
Phone(650) 324-4300
Fax(650) 329-0788
Sole ProprietorNo
Enumeration DateJune 7, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1326088501 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in CA · G80202
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
1101 WELCH RD, Palo Alto, CA 94304
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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. Peter Craig Cassini M.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 18, 2014 through October 18, 2026.

Opt-Out Effective DateOctober 18, 2014
Opt-Out In Effect ThroughOctober 18, 2026Opt-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 94304 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
$156.67 typical visit price
range $70.37 – $206.04
Typical copayment $39.16 (range $17.59 – $51.51)
Most-billed visit code 99204
Established Patient
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
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.

MS. COLEEN TRAVERS LCSW, ACSW
Social Worker (Clinical)
1101 WELCH RD, SUITE A-1, MC 5776
PALO ALTO, CA 94304
Santa Clara County (650) 736-2613
HARVEY, BALL & SHARRON MDS, INC
Pediatrics
1101 WELCH RD, SUITE A1
PALO ALTO, CA 94304
Santa Clara County (650) 329-0300
DR. HAILEN MAK MD
Allergy & Immunology (Allergy)
1101 WELCH RD, SUITE A-2
PALO ALTO, CA 94304
Santa Clara County (650) 322-3847
ROBERT EDWARD MINDELZUN M.D.
Radiology (Diagnostic Radiology)
1101 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 723-6345
DR. BRUCE T ADORNATO M.D.
Psychiatry & Neurology (Neurology)
1101 WELCH RD, SUITE C5
PALO ALTO, CA 94304
Santa Clara County (650) 324-4300
DR. JELENA VUKICEVIC MD
Pediatrics
1101 WELCH RD, SUITE A1
PALO ALTO, CA 94304
Santa Clara County (650) 329-0300
FREDERIC LUSKIN
Marriage & Family Therapist
1101 WELCH RD, SUITE A6
PALO ALTO, CA 94304
Santa Clara County (650) 498-5566
LI ZHEN CHEN
Massage Therapist
1101 WELCH RD, SUITE A6
PALO ALTO, CA 94304
Santa Clara County (650) 498-5566

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 Peter Cassini's NPI number?

The NPI number for Peter Cassini is 1326088501. It was assigned to this individual provider in the NPPES registry on June 7, 2006.

Where is Peter Cassini located?

Peter Cassini practices at 1101 Welch Rd Suite C-5, Palo Alto, CA 94304. The listed phone number is (650) 324-4300.

What is Peter Cassini's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Peter Cassini enrolled in Medicare?

No. Peter Cassini has opted out of Medicare through October 18, 2026. 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 Peter Cassini was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 days 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.