Academic-caliber rheumatology. Private practice access.
On-site biologic infusions. In-office diagnostic ultrasound. Active clinical research. The expertise of a hospital rheumatology program — with a physician who actually knows your name.
Why Synergy Rheumatology
Hospital-level rheumatology services in a physician-owned private practice.
On-Site Infusion Center
RN-administered biologic infusions — infliximab, Cosentyx, Reclast, and more — in a comfortable, monitored setting. No hospital visits, no separate facilities.
In-Office Ultrasound
RhMSUS-certified musculoskeletal ultrasound on a Mindray MX7. Same-day imaging and results — no referral, no waiting weeks.
Clinical Research
Active clinical trials in rheumatology, physician-supervised on-site. Access to emerging therapies before they reach market.
Unhurried Appointments
60-minute new patient visits. Thorough follow-ups. Your questions answered, not rushed. Autoimmune disease doesn't fit a 15-minute slot.
Coordination Without the System
Your rheumatologist coordinates directly with your PCP, specialists, and labs — without the delays of a hospital network. Records from Scripps, Sharp, and UCSD accessible from day one.
Services
Three specialized service lines, integrated with your rheumatologic care.
Infusion Center
On-site RN-administered biologic infusions including infliximab, Cosentyx, and Reclast. Comfortable, monitored, and coordinated with your treatment plan.
Learn moreDiagnostic Ultrasound
RhMSUS-certified musculoskeletal ultrasound using the Mindray MX7. In-office imaging with same-day results for joints, tendons, and soft tissue.
Learn moreObesity Medicine
Evidence-based weight management integrated with rheumatologic care. Addressing the inflammatory burden of obesity alongside autoimmune disease.
Learn more
Your Rheumatologist
Zachary Fellows, MD
Board-Certified Rheumatologist
Board-certified rheumatologist who pairs evidence-based medicine with a foundation in lifestyle — sleep, diet, movement, and connection — because complete care means treating the whole clinical picture, not just writing prescriptions. Active clinical researcher and California Rheumatology Alliance Board member. Every treatment decision is yours; Dr. Fellows recommends, you choose.
- Board-certified in Rheumatology and Internal Medicine
- California Rheumatology Alliance (CRA) Board Member
- UCSD Clinical Integration Network (CIN) affiliated
- RhMSUS-certified musculoskeletal ultrasound
- On-site clinical research principal investigator
What Our Patients Say
Curated from verified Google Reviews.
“When I walked in the office I felt calmness and Angela was so sweet and calming. Then I had the joy of meeting Dr. Fellows. Calm happy demeanor and gentleness. Not once did I feel pressure to answer the questions fast. Glad I met him”
Sharon D.
“I feel very lucky to have found him, especially since he was accepting new patients. I’ve seen him several times over the past year, and each visit he greets me with warmth and great energy. He is an excellent listener who genuinely cares. He also has a great sense of humor and expressive, endearing mannerisms that put you at ease. Most importantly, he addresses all concerns thoughtfully and holistically rather than rushing through appointments.”
Anju G.
“Dr. Fellows is an awesome Doctor. He has all the attributes you would want to see in a physician. He is kind, empathetic, very knowledgeable, engaging, and has a great personality. I wish more of my doctors were just like him. I highly recommend him!”
Cindy M.
“My visit with Dr Fellows was better than I could have expected. From the warm greeting at the door to the professional consultation with the physician, I was blown away by the personal experience received from my visit. He has an amazing bedside manner and is very knowledgeable in his field and I feel confident that he will do his best to care for my health needs. Thank you for a great experience!”
P. K.
“Dr. Fellow and his office is OUTSTANDING. He took time with me, he listened, he cared. I felt so heard -- for the first time in many years. He is a shining example of what doctors should be. Endlessly appreciative for his care.”
Mrs. Reno
“Dr. Fellows is an amazing doctor that spends time with his patients. He was the first doctor in over 10 years of seeing doctors to finally diagnose and treat me! I drove 17 hours round trip to see him. It was 100% worth it!”
Dicie W.
Insurance & Access
We accept all major PPO plans, Tricare, and select HMO plans including Greater Tri-Cities IPA, Sharp Community Medical Group, and UCSD PHSO. Most Medicare Advantage PPO plans accepted.
Copays, estimated coinsurance, and deductible amounts are collected at check-in based on information provided directly by your insurance plan. If the estimate differs from the final processed amount, we'll issue a statement or apply a credit to your account — no surprise bills after the fact.
Ready to get started?
Schedule an appointment or call for an introductory phone consultation to see if Synergy Rheumatology is the right fit.