0 reviews
Summary
With 55 years in neurology, Dr. John Cassidy practices in Healdsburg, California. He completed his residency at UCLA Medical Center and speaks English and Spanish.
Overview based on verified provider data
Quick Facts
- accepting new patients
- 55 years of experience
- speaks English, Spanish
- Ucla Medical Center
- 1 specialty
- 7 areas of expertise
- 5 office locations
- Male
Office Locations
Dr. John Fennon Cassidy has 5 locationsHealdsburg Specialty Medical Services
1312 Prentice DrHealdsburg, CA 95448 Tel: (707) 431-6314
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
![]() | ![]() | ![]() | ![]() |
| Dr. John Fennon Cassidy, MD | Jeannine Thomas, MSPA, PA-C | Dr. Mariana Schmajuk, MD | Dr. Sara Zarei, MD, PhD |
| Neurology | Neurology | Neurology | Neurology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | Accepts New Patients |
| 55 Years of Experience | 21 Years of Experience | 14 Years of Experience | 8 Years of Experience |
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English, Spanish | Speaks English, Spanish | Speaks English, Spanish | Speaks English, Spanish, Farsi |
| Healdsburg , CA | San Antonio , TX | Palo Alto , CA | Orange , CA |
| Med School: St Louis University School Of Medicine | Med School: University of Texas Health Science Center at San Antonio | Med School: Columbia University Presbyterian Hospital - New York, NY | Med School: San Juan Bautista School Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. John Fennon Cassidy
Medical Specialties
Dr. John Fennon Cassidy has the following specialty
Specialty Expertise
Dr. John Fennon Cassidy has the following 7 areas of expertise
Certifications, License, & Education
55 Years Experience
Education & Training
Residency
Completed their residency at Ucla Medical Center.
Medical School
Graduated from St Louis University School Of Medicine in 1971.
NPI Number
Dr. Cassidy's NPI number is 1053495036.
Similar doctors
Frequently Asked Questions
- Where is Dr. John Cassidy's office located?
- Dr. John Cassidy's office is located at 1312 Prentice Dr, Healdsburg, CA, 95448.
- Does Dr. John Cassidy accept virtual/telehealth appointments?
- Dr. John Cassidy has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- What languages does Dr. John Cassidy speak?
- Dr. John Cassidy speaks English and Spanish.
- Does Dr. John Cassidy accept my insurance?
- You can see the insurance plans that Dr. John Cassidy accepts on their Vitals profile.
- How can I make an appointment with Dr. John Cassidy?
- You can find contact information for Dr. John Cassidy here on Vitals.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- State medical licensing boards
Ensuring Data Transparency and Trust: A Guide to Vitals Doctor Listings and Reviews
Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.
Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.
Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.






