3.5
2 Ratings
Summary
Dr. Gregory Marshall treats ataxia, balanitis, and drug allergy, and performs PET scans, PET-CT scans, and circumcision. He practices urology and has 39 years of experience. Dr. Marshall is affiliated with Kaiser Permanente Walnut Creek Medical Center and sees patients in Walnut Creek, Martinez, and Antioch, California. He earned his medical degree from the Keck School of Medicine of the University of Southern California. Patients on Vitals rate Dr. Marshall 3.5 out of 5.
Overview based on verified provider data
Quick Facts
- 39 years of experience
- 10 insurance plans accepted
- Keck School Of Medicine Of The University Of Southern California
- 1 specialty
- 7 areas of expertise
- 1 hospital affiliation
- 4 office locations
- Male
Office Locations
Dr. Gregory Alan Marshall has 4 locationsKaiser Permanente Walnut Creek Medical Center
1425 S Main StWalnut Creek, CA 94596 Tel: (925) 295-4000
Martinez Va Outpatient Clinic
150 Muir RdMartinez, CA 94553 Tel: (925) 372-2000
Mon8:00 am - 4:30 pm
Tue8:00 am - 4:30 pm
Wed8:00 am - 4:30 pm
Thu8:00 am - 4:30 pm
Fri8:00 am - 4:30 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  | | |
| Dr. Gregory Alan Marshall, MD | Dr. Tim Chang, MD | Dr. Serena Yang-Loudin, MD | Dr. Kris Prado, MD |
| Urology | Urology | Urology | Urology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 39 Years of Experience | 13 Years of Experience | 13 Years of Experience | 14 Years of Experience |
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Walnut Creek , CA | Palo Alto , CA | Pleasanton , CA | Palo Alto , CA |
| Med School: Keck School Of Medicine Of The University Of Southern California | Med School: Stanford University School Of Medicine | Med School: Baylor College Of Medicine | Med School: University Of California San Francisco School Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Gregory Alan Marshall
Medical Specialties
Dr. Gregory Alan Marshall has the following specialty
Specialty Expertise
Dr. Gregory Alan Marshall has the following 7 areas of expertise
Certifications, License, & Education
39 Years Experience
Dr. Gregory Alan Marshall holds an expired medical license in the state of California.
Medical License
Medical Doctor with an expired medical license in the state of California that expired in 2026.
Education & Training
Medical School
Graduated from Keck School Of Medicine Of The University Of Southern California in 1987.
NPI Number
Dr. Marshall's NPI number is 1437237526.
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Frequently Asked Questions
- Does Dr. Gregory Marshall accept my insurance?
- You can see the insurance plans that Dr. Gregory Marshall accepts on their Vitals profile.
- How can I make an appointment with Dr. Gregory Marshall?
- You can find contact information for Dr. Gregory Marshall here on Vitals.
- Which hospitals is Dr. Gregory Marshall affiliated with?
- Dr. Gregory Marshall is affiliated with Kaiser Permanente Walnut Creek Medical Center.
- Where is Dr. Gregory Marshall's office located?
- Dr. Gregory Marshall's office is located at 1425 S Main St, Walnut Creek, CA, 94596.
- Is Dr. Gregory Marshall accepting new patients?
- Dr. Gregory Marshall has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- State medical licensing boards
- Healthcare system and provider network data
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