TIMOTHY MICHAEL PRESTON PA-C
NPI 1053956896
Physician Assistant in Stanford, CA

Active since November 15, 2019PECOS EnrolledAccepts Medicare Assignment
300 PASTEUR DRIVE, STANFORD, CA 94305(650) 723-4000 Get Directions Write a Review

NPPES record last updated: December 23, 2025. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Dec 23, 2025, Mar 11, 2025, Feb 23, 2025 and 1 more (4 updates tracked since 2019).

About Timothy Michael Preston Pa-c NPPES

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

TIMOTHY MICHAEL PRESTON PA-C (NPI 1053956896) is an individual physician assistant in Stanford, California, licensed in California (58034) and active in the NPI registry since November 2019. He is enrolled in Medicare PECOS and is a graduate of Other (2020).

NPPES Registry Identity

NPI1053956896
Entity TypeIndividualMale
Primary Taxonomy363A00000X
Provider Legal NameTIMOTHY MICHAEL PRESTONCredential: PA-C
Location Address300 PASTEUR DRIVEStanford, CA 94305-2200
Mailing Address300 Pasteur DrStanford, CA 94305-2200 · (650) 723-4000
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateNovember 15, 2019
Last NPPES UpdateDecember 23, 20254 updates tracked since enumeration
NPPES CertifiedDecember 23, 2025
NPI 1053956896 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License Licensed in CA · 58034
Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Also ListedPhysician Assistant · SurgicalTaxonomy 363AS0400X · License 58034 (CA)
300 PASTEUR DRIVE, Stanford, CA 94305

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Timothy Michael Preston Pa-c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID244652303
PECOS Enrollment IDI20200617002806
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.

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Replacement of thigh bone and hip joint with prosthesis 27130
This procedure, known as hip arthroplasty, involves replacing your damaged thigh bone and hip joint with artificial parts, called a prosthesis. It helps relieve pain, improve mobility, and enhance your quality of life.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94305 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
$106.47 typical visit price
range $70.37 – $206.04
Typical copayment $26.61 (range $17.59 – $51.51)
Most-billed visit code 99203
Established Patient
$86.56 typical visit price
range $23.96 – $169.60
Typical copayment $21.64 (range $5.99 – $42.40)
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 20

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

Hospitalist
300 PASTEUR DRIVE, LANE 154
STANFORD, CA 94305
Pathology (Clinical Pathology/Laboratory Medicine)
300 PASTEUR DRIVE, LANE 235
STANFORD, CA 94305
Radiology (Diagnostic Radiology)
300 PASTEUR DRIVE, H1330, MC: 5621
STANFORD, CA 94305
Internal Medicine (Cardiovascular Disease)
300 PASTEUR DRIVE, FALK CVRC 295
STANFORD, CA 94305
Student in an Organized Health Care Education/Training Program
300 PASTEUR DRIVE
STANFORD, CA 94305
Pathology (Molecular Genetic Pathology)
300 PASTEUR DRIVE, ROOM L235, MC:5324
STANFORD, CA 94305
Student in an Organized Health Care Education/Training Program
300 PASTEUR DRIVE, LANE 154
STANFORD, CA 94305
Psychiatry & Neurology (Psychiatry)
300 PASTEUR DRIVE
STANFORD, CA 94305

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 Timothy Preston's NPI number?

The NPI number for Timothy Preston is 1053956896. It was assigned to this individual provider in the NPPES registry on November 15, 2019.

Where is Timothy Preston located?

Timothy Preston practices at 300 Pasteur Drive, Stanford, CA 94305. The listed phone number is (650) 723-4000.

What is Timothy Preston's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Timothy Preston enrolled in Medicare?

Yes. Timothy Preston is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Timothy Preston was last updated on December 23, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.