IPM - Oakland – 2nd Floor

2923 Webster St. Ste. 202, Oakland, CA 94609

Fax: (510) 250-6574

Clinic Hours:

Mon – Fri: 8am – 5pm

Schedule An Appointment

Current Patients:
Call to schedule: (510) 451-4142
New Patients:

Contact Our IPM - Oakland – 2nd Floor

IPM - Oakland – 2nd Floor - Providers


Diokson Rena, MD

Dr. Diokson Rena has been a practicing physiatrist for 20 years, the last 12 years has been with the group. Dr. Rena is board certified in physical medicine and rehabilitation with subspecialties in pain medicine and sports medicine. He studied physical therapy prior to medical school. He completed the residency in PM&R and fellowship in spine, sports and pain. He also trained in pathology.   Dr. Rena specializes in nonsurgical musculoskeletal care with special interest in interventional spine care. He is also adept in the California workers compensation system. When not working, Dr. Rena likes spending time with family and friends, traveling and simply enjoying what San Francisco has to offer.


Natalia Balytsky, MD

Natalia Balytsky is an Anesthesiologist and pain management specialist with over 15 years experience. Studying medicine in Ukraine, Natalia transitioned to the Unites States to the University of Pittsburg and University of California San Francisco where she was a clinical fellow. Prior to joining the Sfmmg team, Natalia worked at Bay Area Orthopedic Surgery and Sports Medicine as a pain management specialist. Natalia brings valuable knowledge and experience to join our team of specialists and surgeons.


Varsha Sikka, MD

Dr. Sikka is a Double Board-Certified Physician in Physical and Rehabilitative Medicine as well as Pain Management. She is a specialist in multiple chronic and acute pain management modalities including Ultrasound injections, Spinal injections, Prolo Therapy, Addiction Medicine, Suboxone maintenance, EMG/NCV Studies, Spine, musculoskeletal, repetitive stress injuries, acupuncture, and sports medicine. In addition to her work with pain management, Dr. Sikka has strong professional interests and training in Closed Head Injury, Neuropsychiatric, and Spinal Cord Injuries. Dr. Sikka is adept in both Eastern and Western medical techniques. This breadth of knowledge ensures the highest level of care for her patients. After receiving her medical degree, Dr. Sikka completed her residency at the University of Colorado Medical Center. She then pursued post-graduate work in Adult and Pediatric Rehabilitation, Spinal Cord and Head Injury, Neuromuscular Disease, Prosthetic and Orthotic Evaluation, Electromyography, and Acupuncture. Since 1978 her practice has been focused on the Worker's Compensation area. She possesses the skills and experience needed to address the issues and challenges unique in the treatment of injured workers. Dr. Sikka practices in the Fairfield and Oakland offices since 2003.


William R. Campbell, DO

Dr. Campbell is a Board Certified Orthopedic Surgeon treating Worker’s Compensation and Private Health Insurance patients in the Bay Area since 2007.  Treatment offices include, San Francisco, Oakland, Santa Rosa and Vallejo. With thousands of cases worth of experience, Dr. Campbell brings a well-honed skill set to those patients in need of surgical treatment for their shoulder, knee and general Orthopedic injuries.  However, every patient is different, and many times good results can be obtained without heavy medication, aggressive treatment or surgery. Dr. Campbell derives a great deal of satisfaction working with his patients as they choose from the various treatment options that best match their goal. Dr. Campbell is almost universally accepted in all the various MPN’s (including the recently updated SCIF/Harbor Health Systems) as well as Private Health Insurance carriers (including Brown & Toland). Dr. Campbell is also an Orthopedic Q.M.E. and has been recognized as AME on multiple occasions by firms such as Ratto, Hanna Brophy, Boxer & Gerson, Laughlin Falbo and others.  Practicing within the worker’s compensation arena for almost a decade has produced a keen understanding of the various issues surrounding AOE/COE, TTD, disability rating, apportionment, future medical care and the various other complexities of the med-legal evaluation process. Dr. Campbell maintains several Med-Legal Offices (see below) and appointments currently book out one to two months. Dr. Campbell attended medical school at the Chicago College of Osteopathic medicine. Later, he completed his orthopedic surgical residency in the Michigan State University system, and fellowship at the University of Texas Medical Branch. To Schedule Please Call: Kerry Esquivel – (510)-451-4142 x 275 San Francisco, Daly City, Oakland, Sacramento, Santa Rosa, Fairfield, Vallejo, Brentwood, Walnut Creek. Treatment Offices – (415) 409-7364 San Francisco, Oakland, Santa Rosa and Vallejo


Barry Meskin, DPM

Dr. Barry Meskin has a well-established reputation as an excellent and responsible clinician, with a very strong commitment to rendering care in a pragmatic, efficient and cost-effective manner.  His 20 years of experience in trauma, sports injuries, medicine and industrial work injuries has earned him the respect of both colleagues and patients. Born in Johannesburg, South Africa, Dr. Meskin immigrated to the United States at the age of 25. In 1992 he completed his medical and surgical training in San Francisco where he became a Doctor of Podiatric Medicine (DPM). Dr. Meskin’s internship and residency training was completed at the city and county Hospitals of San Francisco General and Oakland Highland Hospital. His inspiration and interest in working with injured individuals comes from both his father, Denis Meskin, MD,  and in serving as an Orthopedic Trauma Corpsman at the largest South African Military Hospital during the South African Border Wars. Dr. Meskin is a credentialed provider in excellent standing with most Medical Provider Networks. In addition, he has been selected as a Preferred Panel Provider with many employers and carriers.  In addition to his medical practice, his experience as a Qualified Medical Examiner (QME) enables him to evaluate disability and write medical-legal reports based on objective evidence and places scientific methods relative to causation. Dr. Meskin treats IPM patients at the San Francisco and Walnut Creek locations.


Eric Beane, PA

Eric Beane is a California licensed Physician Assistant (PA) at the Brentwood, Walnut Creek and Oakland locations. He graduated from Samuel Merritt University with his Master of Physician Assistant and is certified by the National Commission on Certification of PAs. Eric has also completed extensive graduate work in Kinesiology with an emphasis in rehabilitation at California State University, East Bay while concurrently working as a Physical Therapist Aide. Previously, he conducted various philanthropic and volunteer work, including traveling to Ecuador, to provide compassionate care to the underserved population. Eric was born and raised in the San Francisco Bay Area and currently lives in the East Bay. 

In his free time, Eric is pursuing his private pilot’s license, is an avid free diver and swimmer, including participating in annual swims from Alcatraz Island to the San Francisco Marina District’s Aquatic Park. 


Joel Renbaum, MD

Dr. Renbaum received his education at Johns Hopkins University and graduated from medical school at the University of Maryland in 1968. He was Board Certified in Orthopedic surgery in 1974 after a residency at combined program at the U.S. Public Health Service and Tulane University. He then went into private practice in San Francisco. He has extensive experience in the Workers' Compensation arena both in treating and evaluating patients. In addition to general orthopedics and injury care, he has a special interest in treating injured workers with knee and shoulder problems. He is a Qualified Medical Evaluator.


Julie Ginsburg, L.Ac

Julie Ginsburg is a California Licensed Acupuncturist specializing in pain management and wellness. She graduated from San Francisco State University receiving her Bachelors of Science in Biology Concentration in Microbiology, Minor in Chemistry, graduating with honors having completed the pre-Health Professional curriculum.  While at SFSU, Julie conducted independent research in molecular biology and was awarded a National Science Foundation Grant. Julie’s interest in health led her to work in both Pharmaceutical Research and Development and in Clinical Research coordinating trials for Parkinson disease, stroke/CVA, Alzheimer disease, multiple sclerosis and migraine headache therapeutics. Taking a break to raise her own children, Julie re-connected with her love of science and passion for promoting wellness by studying Eastern Medicine and Qigong.  She earned her Masters of Science in Traditional Oriental Medicine from Acupuncture and Integrative Medicine College in Berkeley where she graduated Magna Cum Laude in 2014. Julie also teaches Qigong exercises having completed ACTCM’s Qigong Teacher Training Program in San Francisco with the late Dr. Suzanne Friedman.  One of Julie’s strengths as an Acupuncturist is being able to bring her strong foundation in science to inform her ability as an integrative holistic healer. She is particularly interested in supporting her patients’ wellness and promotes balance in addressing pain, trauma, stress, headaches, insomnia, hormonal imbalances, PMS, fatigue, depression, and anxiety. Julie brings a very compassionate presence to her treatments and strives for a painless approach in practicing acupuncture.


Scott Gwilliam- NP

Scott graduated from Samuel Merritt University with a Bachelor of Science in Nursing in 2015 and later returned to Samuel Merritt to earn a Master of Science in Nursing as a Family Nurse Practitioner in 2019.  He is Nationally Board Certified through the American Nurses Credentialing Center as a Family Nurse Practitioner.  As an RN for six years, Scott has worked in both Skilled Nursing and Acute Care working in areas specializing in trauma, neurology, orthopedic and post-surgery.  Before joining IPM he was working as a Nurse Practitioner at vaccine sites across the Bay Area and Central Valley helping people become vaccinated against Covid 19.  Growing up, Scott had a love for athletics and through personal experience dealing with injury, combined with his training, he has developed a passion for pain management, orthopedics and helping people recover as much as possible from injury.  Scott was born and raised in the East Bay, where he lives with his wife and children.


Susi Rugama, NP

Prior to becoming a nurse, Susi Rugama, NP-C worked in various administrative roles. She completed her BSN in 1998  at the University of Maryland, Baltimore and later worked at Johns Hopkins Hospital in Oncology.

She then transitioned into a case management position with an insurance company working with high-risk diabetics and patients with other chronic illness for eight years. She completed her MSN degree in 2009  at Holy Names University. Upon graduation, she worked as an Independent Contractor with an Orthopedic Surgeon Specializing in Worker’s Compensation patients until 2015 when the Surgeon retired.

Susi Rugama, NP-C joined the San Francisco IPM in 2015 where she continues to care for long-term patients and accepts the new referral in collaboration with Dr. Joel Renbaum and other IPM providers.

Her interests include running, rock climbing, hiking and other outdoor activities.


Vina Nguyen, NA

Vina Nguyen is an NCCPA-certified Physician Assistant with a Master of Health Services from the University of California at Davis. She received her Bachelor of Science in Biology at Georgia State University. Her focus has been primarily in Pain Management and Physical Medicine & Rehabilitation. She practiced at Pain & Spine Consultants in Tennessee for 3 years before moving back to California. She is skilled in joint injections and trigger point injections. She believes in a holistic and multi-disciplinary approach to pain and also utilizes physical therapy, acupuncture, and meditation practices to help restore function and quality of life for her patients. In her free time, she enjoys hiking, trying new food, traveling, and listening to podcasts and music.