4.2
5 Ratings with 3 written Reviews
Summary
Dr. Jon Portnoff is a cardiovascular disease specialist with expertise in internal medicine and interventional cardiology. He earned his medical degree from American University of the Caribbean School of Medicine and brings 42 years of experience to his practice. Dr. Portnoff is fluent in both English and Spanish.
Dr. Portnoff practices at Adventist Health Howard Memorial and sees patients in Ukiah and Willits, California. He specializes in treating heart rhythm disorders like atrial fibrillation and managing high blood pressure. His diagnostic expertise includes performing heart ultrasounds, electrocardiograms, and advanced contrast echocardiography to evaluate heart function. Patients rate Dr. Portnoff 4.2 out of 5 stars for his care.
Dr. Portnoff practices at Adventist Health Howard Memorial and sees patients in Ukiah and Willits, California. He specializes in treating heart rhythm disorders like atrial fibrillation and managing high blood pressure. His diagnostic expertise includes performing heart ultrasounds, electrocardiograms, and advanced contrast echocardiography to evaluate heart function. Patients rate Dr. Portnoff 4.2 out of 5 stars for his care.
Overview based on verified provider data
Quick Facts
- 42 years of experience
- 13 insurance plans accepted
- speaks English, Spanish
- American University Of The Caribbean School Of Medicine
- 3 written reviews
- 3 specialties
- 14 areas of expertise
- 1 hospital affiliation
- 3 office locations
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Locations
Dr. Jon Stephen Portnoff has 3 locationsAdventist Heart And Vascular Institute
115 Hospital DrUkiah, CA 95482 Tel: (707) 463-2400
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 - 12:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  |  |  |
| Dr. Jon Stephen Portnoff, MD | Dr. Raghav Sharma, MD | Dr. Shah Zaman Khan, MD | Dr. Iyad Hanna, MD |
| Cardiovascular Disease | Cardiovascular Disease | Internal Medicine | Internal Medicine |
| Accepts New Patients | Accepts New Patients | ||
| 42 Years of Experience | 16 Years of Experience | 10 Years of Experience | 28 Years of Experience |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English, Spanish | Speaks English, Hindi | Speaks English, Spanish | |
| Ukiah , CA | Winter Park , FL | Fort Bragg , CA | Rancho Cucamonga , CA |
| Med School: American University Of The Caribbean School Of Medicine | Med School: New York Medical College | Med School: Univ Of Tx Hlth Sci Ctr At San Antonio Joe R & Teresa Lozano Long Schof Med | Med School: University Of Damascus Faculty Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Jon Stephen Portnoff
Medical Specialties
Dr. Jon Stephen Portnoff has the following 3 specialties
Specialty Expertise
Dr. Jon Stephen Portnoff has the following 14 areas of expertise
Certifications, License, & Education
42 Years Experience
Dr. Jon Stephen Portnoff 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 American University Of The Caribbean School Of Medicine in 1984.
NPI Number
Dr. Portnoff's NPI number is 1609874445.
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Frequently Asked Questions
- Does Dr. Jon Portnoff accept virtual/telehealth appointments?
- Dr. Jon Portnoff has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Is Dr. Jon Portnoff accepting new patients?
- Dr. Jon Portnoff has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Does Dr. Jon Portnoff accept my insurance?
- You can see the insurance plans that Dr. Jon Portnoff accepts on their Vitals profile.
- Which hospitals is Dr. Jon Portnoff affiliated with?
- Dr. Jon Portnoff is affiliated with Adventist Health Howard Memorial.
- Where is Dr. Jon Portnoff's office located?
- Dr. Jon Portnoff's office is located at 115 Hospital Dr, Ukiah, CA, 95482.
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