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DR. WILLIAM TAYLOR PREY M.D.
NPI 1366542953
Psychiatry & Neurology - Psychiatry in San Francisco, CA

Active since September 23, 2006PECOS Enrolled
2345 CALIFORNIA ST, SUITE #1, SAN FRANCISCO, CA 94115(415) 346-8599(415) 389-6935 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. William Taylor Prey M.d. NPPES

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

DR. WILLIAM TAYLOR PREY M.D. (NPI 1366542953) is an individual psychiatry provider in San Francisco, California, licensed in California (G45386) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1366542953
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. WILLIAM TAYLOR PREYCredential: M.D.
Location Address2345 CALIFORNIA ST, SUITE #1San Francisco, CA 94115-2747
Mailing Address2345 California St, Suite #1San Francisco, CA 94115-2747 · (415) 346-8599 · Fax (415) 389-6935
Phone(415) 346-8599
Fax(415) 389-6935
Sole ProprietorYes
Enumeration DateSeptember 23, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1366542953 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · G45386
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
2345 CALIFORNIA ST, San Francisco, CA 94115
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Other Identifiers 1

Medicare UPINA50011CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Taylor Prey M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94115 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
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
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 6

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

NORMAN POSTONE M.D.
Psychiatry & Neurology (Psychiatry)
2345 CALIFORNIA ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 776-0907
DR. DOUGLAS BURTMAN ANDERSON M.D.
Psychiatry & Neurology (Psychiatry)
2345 CALIFORNIA ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 346-0232
MISSION FAMILY THERAPY, INC.
Psychologist (Clinical)
2345 CALIFORNIA ST, SUITE 7
SAN FRANCISCO, CA 94115
San Francisco County (415) 200-5982
B. CODY FISHER M.D.
Psychiatry & Neurology (Psychiatry)
2345 CALIFORNIA ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 673-6310
DR. THOMAS DAVID STERN PHD
Psychologist
2345 CALIFORNIA ST
SAN FRANCISCO, CA 94115
San Francisco County (415) 905-4128
DR. GEORGIANA SPRADLING PH.D., MFT
Marriage & Family Therapist
2345 CALIFORNIA ST, #7
SAN FRANCISCO, CA 94115
San Francisco County (415) 831-6042

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 William Prey's NPI number?

The NPI number for William Prey is 1366542953. It was assigned to this individual provider in the NPPES registry on September 23, 2006.

Where is William Prey located?

William Prey practices at 2345 California St Suite #1, San Francisco, CA 94115. The listed phone number is (415) 346-8599.

What is William Prey's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is William Prey enrolled in Medicare?

Yes. William Prey is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Prey was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.