Telemedicine virtual visits are now available by appointment for patients of NCMA Live Oak Family Medicine. Call 707-544-3811 for additional information or use our “request an appointment” form below.

NCMA Live Oak Family Medicine team

The NCMA Live Oak Family Medicine team: Fred Wallace, Margo Elliott, James Trapnell, Diana Fox, William Markoff, Alicia Brophy, Jennifer Warren, Brianda Prudente, (not pictured: Bianca Velasquez).

About the NCMA Live Oak Family Medicine team

A patient-centered medical home

NCMA Live Oak Family Medicine (formerly Spring Creek Family Practice) was founded in 1970 and run as a solo practice for decades. The practice first partnered with Northern California Medical Associates in 2008. Voted 2011 Best Family Doctors in Sonoma County in Northbay Biz magazine, our board-certified physicians James G. Trapnell, MD, and William A. Markoff, MD, and Nurse Practitioner Jennifer E. Warren, FNP, believe that getting to know their patients and understanding their personal lifestyle goals are the first steps towards providing quality, personalized healthcare.

At NCMA Live Oak Family Medicine, physicians and nurse practitioners understand how making healthy lifestyle choices isn’t always easy, but the benefits of leading a healthy life are within everyone’s reach. For more than a decade, Drs. Markoff and Trapnell have had the pleasure of making Sonoma County residents healthier and happier in their day-to-day lives.

Office-based prevention and screening programs include general and sports physical exams, routine check-ups, vaccinations, laboratory testing, behavioral healthcare, women’s health, among other primary medical care services. Early screening and detection can result in less acute episodes of illness that are devastating both physically and financially. NCMA Live Oak Family Medicine physicians provide primary healthcare at every stage of life.

Our medical staff

William A. Markoff, MD

William Markoff, MDWilliam Markoff, MD, grew up in Santa Rosa, Calif. and graduated from Loyola University of Chicago’s Post-Baccalaureate Pre-Medical Program in 1993. He attained his medical degree from State University of New York Syracuse in 1998. He went on to complete his residency program in family practice at St. Francis Hospital and Health Centers in Indianapolis, Ind., during which he also worked as an urgent care physician. After returning home to Sonoma County, Dr. Markoff joined NCMA Live Oak Family Medicine in 2001.

On a personal note, Dr. Markoff and his wife are raising two young daughters. He enjoys cooking, drawing, movies, all things electronic, he is a sports enthusiast and is an avid musician and guitarist, but above all, he enjoys spending time with his family.


Family practice

Medical school

State University of New York, Health Science Center at Syracuse


Family Practice, St. Francis Hospital and Health Centers


Family Practice, St. Francis Hospital and Health Centers

James Trapnell, MD, Northern California Medical Associates

James G. Trapnell, MD

James Trapnell, MD, was born and raised in the Bay Area. A UC Berkeley undergraduate, class of 1986, Dr. Trapnell went on to attend medical school at UCLA, and then his family practice residency in Martinez, Calif. through UC Davis. Upon completing his residency, Dr. Trapnell worked in the East Bay, California, and in New Hampshire providing healthcare to the underserved. He returned to the west coast in 1999, and has been a family physician at NCMA Live Oak Family Medicine for more than 13 years.
Dr. Trapnell’s enjoys all aspects of family healthcare, especially providing a stable continuum of care for the elderly and medically complicated patients.

Outside of work, Dr. Trapnell and his wife Annette are busy raising their two wonderful daughters. His hobbies include listening to music, cooking, baking, exercise and gardening. Santa Rosa is Dr. Trapnell’s home, and he feels truly fortunate to have become a part of such a wonderful community — both personally and professionally.


Family practice

Medical school

UCLA School of Medicine, New York Medical College


Family Practice, UC Davis Family Practice Network


Family Practice, UC Davis Family Practice Network

Jennifer E. Warren, RN, MSN, FNPJennifer E. Warren RN, MSN, FNP

Jennifer Warren, RN, holds a masters degree in nursing from Sonoma State University and is a Certified Nurse Practitioner and a Board Certified Family Nurse Practitioner. She received a Bachelor of Science degree in nursing from California State University, East Bay.

Jennifer specializes in providing clinical excellence to patients through caring and compassionate service as a family nurse practitioner.

NCMA Live Oak Family Medicine patient care philosophy

Great healthcare for the whole family starts with a doctor who can explain things in ways that patients can understand. Our physicians pride themselves on their ability to foster lasting, personalized healthcare relationships with their patients. Trust, professionalism, and authenticity in the patient-doctor relationship are essential for creating a comfortable, effective environment for providing the best healthcare services. This requires excellent listening skills, as well as attention to detail. Our doctors take the time to answer questions, and encourage all patients to discuss any health concerns with their physician.

Exceptional, personalized healthcare for the whole family requires:

  • Dedication to treating the individual as a “whole,” as opposed to just looking at a patient’s symptoms, both physically and mentally.
  • Professionalism and compassion in all interactions with patients, our patients are treated like family.
  • Knowledgable, experienced physicians. Drs. Trapnell and Markoff each have more than a decade of experience providing comprehensive family healthcare in Sonoma County.

If you and your family value compassion as well as medical expertise in your primary care physicians, we welcome you to call our office to schedule an appointment 707-544-3811.

Health services we offer

NCMA Live Oak Family Medicine is a patient-centered medical home and is proud to bring the following comprehensive healthcare services to its patients:

  • Newborn care.
  • Medical care of children.
  • Adolescent care.
  • Adult medicine, including treatment of both acute and chronic conditions.
  • Women’s health including pap smears.
  • Comprehensive care of the elderly.
  • Sports medicine and joint injection.
  • Adult annual health exams.
  • Sports, school, employment exams.
  • Health education and preventive medicine.
  • Family planning and contraceptive management.
  • Obesity.
  • Diabetes care.
  • Skin disease diagnosis and treatment.
  • Diagnosing unusual or complex conditions.
  • Vision screening.
  • EKG.
  • Minor surgical procedures, including mole removal, wart removal, skin biopsy, cryotherapy, laceration repair and cyst excision.

We love patient feedback

Please share your care experience with NCMA Live Oak Family Medicine providers and staff. Write your reviews or ratings on any of these platforms:

NCMA Live Oak Family Medicine

3536 Mendocino Avenue, #300
Santa Rosa, CA 95403
Fax: 707-544-0128

Business hours: 7:45 a.m.–12 p.m. ~ 12:45 p.m.–5 p.m.

Request an appointment

Insurance plans

We currently accept the following health insurance plans:

  • Aetna (Direct)
  • Anthem Blue Cross of California and Prudent Buyer Network
  • Beech Street Corporation
  • Blue Shield of California
  • Humana / Choice Care Network
  • California Foundation for Medical Care (CFMC)
  • CIGNA / Great West Healthcare
  • Coventry / First Health Network
  • Delta Health — Amy’s Kitchen
  • HealthNet
  • Healthsmart
  • Medicare
  • Meritage Medical Network
  • MultiPlan/PHCS, Inc.
  • Railroad Medicare
  • UHC AARP Medicare Complete through Meritage (new in 2020)
  • United Healthcare

Subject to change. Verify coverage with your provider or your insurance plan.