Cardiology in Ukiah, CA - ProviderMatch - Adventist Health

Cardiology • Ukiah, CA • Since 1980

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About

You’re looking for cardiology care in Ukiah, CA through Adventist Health Ukiah. Adventist Health operates 32 U.S. offices, including Adventist Health Ukiah Valley. To find a cardiologist or cardiac services in Ukiah, visit Adventist Health Ukiah Valley’s site and look for Cardiology or Cardiovascular Services, or use ProviderMatch/Find a Doctor tools on Adventist Health’s network page.

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Clinic Type

Cardiology

Address

115 Hospital Drive, Ukiah, CA 95482

Phone

707-463-2400

Email

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Opening Hours

Not published — contact the clinic to confirm hours.

Website

https://doctors.adventisthealth.org/specialty/Cardiology/near/Ukiah%2C%20CA?page=1

Services Offered

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Team

David R Ploss, MD — MD
Julie Ann Miner, FNP — FNP
Jon Stephen Portnoff, MD — MD
Kundai Kelvin Tanganyika, MD — MD

Insurance & Payment

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Languages Spoken

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Social Media

Twitter Youtube Facebook Linkedin Instagram

Photos

What Patients Say

Overall sentiment across review platforms: mixed

Adventist Health ProviderMatch (Dr. David R. Ploss): 4.8 out of 5 stars (364 ratings, 38 reviews) (38 reviews)
Adventist Health ProviderMatch (Dr. Jon Stephen Portnoff): 5 out of 5 stars (111 ratings, 28 reviews) (28 reviews)
Adventist Health ProviderMatch (Julie Ann Miner, FNP): 4.9 out of 5 stars (101 ratings, 23 reviews) (23 reviews)
Healthgrades (Dr. David Ploss): 3.4 out of 5 stars (25 ratings) (25 ratings)

Patients praise

High satisfaction with clinical knowledge and expertise of specific providers
Appreciation for providers who listen attentively to patient concerns
Positive experiences with clear communication and thorough explanations from some staff members
Reports of kind, professional, and patient bedside manners from highly-rated practitioners

Common complaints

Perceived lack of engagement or "cold" bedside manner from some providers
Reports of poor communication regarding appointments and long wait times
Concerns about administrative/corporate focus potentially affecting care quality
Frustration with perceived lack of thorough examinations in some instances

"Dr Portnoff is the best Dr I've ever had! ... Excellent, Dr Portnoff always explains things very clearly and pleasantly."

— Adventist Health ProviderMatch Review

"Julie Miner is truly one of the most caring health care practitioners at Adventist Health. She Is also very knowledgeable and applies that to each patient on an Individual basis."

— Adventist Health ProviderMatch Review

"After waiting one hour in the exam room. He had no idea about the surgery... No discussion about anything. This is not the first time we have had disengaged doctors at Adventist Health."

— Healthgrades Review (Dr. David Ploss)

Synthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].

In the News

Dr. David R Ploss, MD - Ukiah, CA - Cardiology - Adventist Health — Dec 11, 2025
Julie Ann Miner, FNP - Ukiah, CA - Cardiology — Apr 29, 2026
Dr. David R Ploss, MD - Ukiah, CA - Cardiology — Apr 29, 2026

Information sourced from the clinic's website as of July 10, 2026. Own this clinic? Claim or correct this listing.