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Top Primary Care Physicians

Hoag has recently expanded to serve the community and is proud to introduce our newest Primary Care Physicians. These physicians are currently accepting new patients and scheduling appointments.

“I aim to be a resource to my patients and provide education. This results in a successful doctor-patient relationship that allows us to reach the patient’s health care goals.”

Samuel Barlow, M.D.
Family Medicine
HMG Huntington Beach
Hoag Health Center Huntington Beach
19582 Beach Boulevard, Suite 325




“It brings me joy to collaborate with my patients and create solutions, and see their health improve over time.”

Justin Do, D.O.
Internal Medicine
HMG Costa Mesa
Hoag Health Center Costa Mesa
1190 Baker Street, Suite 105




“I am passionate about preventative medicine. My goal is to help my patients enjoy their daily lives and stay healthy as long as possible.”

John Jeon, M.D.
Family Medicine
HMG Costa Mesa
1170 Baker Street, Suite H1




“I believe in developing personal relationships and serving as an advocate for my patients. It is important to me to deliver excellence to my patients, and I appreciate the trust they have in me to make a positive impact in their life.”

Jennifer Keiner, M.D.
Internal Medicine
HMG Newport Beach
Fashion Island area
360 San Miguel Drive, Suite 105



“I enjoy celebrating major milestones with my patients and guiding them along the way. It is a great honor to help my patients and provide support to both my patients and their families.”

Dorothy Marquez-Maneja, M.D.
Internal Medicine
HMG Newport Beach
Hoag Health Center Newport Beach
510 Superior Avenue, Suite 200B



“I am inspired by my patients when they take charge of their health. Through our partnership, we can make change happen.”

Diane Phan, M.D.
Family Medicine
HMG Costa Mesa
1170 Baker Street, Suite H1




“My goal is to provide compassionate and high-quality care to my patients to support their overall health and wellness. From celebrating healthy outcomes to persevering through difficult times, I am here as their advocate.”

Sarin Prakobwanakit, M.D.
Family Medicine
HPP – Newport Family Medicine
520 Superior Avenue, Suite 360
Newport Beach, CA 92663



“I enjoy building long-term relationships with my patients. My role as a family medicine physician allows me the opportunity to follow my patients over a lifetime which is very fulfilling.”

Anjali Ranade, M.D.
Family Medicine
HMG Foothill Ranch
Hoag Health Center Foothill Ranch
26672 Portola Parkway, Suite 104


Having a doctor who knows you and your health history is essential to developing and maintaining a trusting relationship in which decisions about your health can be made in a nurturing environment. Whether you have a Medicare Advantage, Medicare, HM0 or PPO insurance plan, aligning with a Primary Care Physician allows you to maximize your health care benefits and provides a guide to navigate your way through the Hoag health care system.

Hoag is here to serve you, offering several ways to access excellent primary care services near you:

  • Hoag Medical Group (HMG) and Hoag Urgent Care offer the choice of more than 110 PCPs and in-house specialists, in more than 24 convenient HMG locations and 15 Hoag Urgent Care centers throughout Orange County.
  • Hoag Physician Partners is a comprehensive network of independently contracted primary care and specialty care physicians who practice in more than 52 different specialties.
  • Hoag Concierge Medicine, a membership-based alternative to traditional primary care provides 24/7 physician access, a designated care team, state-ofthe- art fitness facilities, and exercise and nutrition professionals.

Top physicians are frequently added to the Hoag health care system. Visit to view the doctors available to you and to find the best fit for your family.