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San Luis just got four specialists. For some patients, that means no more drive to Yuma.
An orthopedic surgeon, a rheumatologist and two endocrinologists are now seeing patients at the San Luis Medical Mall. One says he's the only hand surgeon in the county.
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If you live in San Luis and need a specialist, you probably know the routine. Drive up to Yuma. Sit in a waiting room. Drive back. Then do it again next month.
For four kinds of care, that routine may have just gotten shorter.
On Thursday morning, the Regional Center for Border Health and San Luis Walk-In Clinic welcomed four specialists to the San Luis Medical Mall:
- Dr. Todd K. Runyan, orthopedic surgeon
- Dr. Madhu Arora, rheumatologist
- Dr. Yanal Massamat, endocrinologist
- Dr. Oscar L. Castro, endocrinologist
KYMA's Spanish-language report says they'll see patients in Suite 400 of the Medical Mall.
What they do
If the titles don't mean much to you, here's the short version.
An orthopedic surgeon treats bones, joints and the tissue around them. Breaks, bad knees, worn-out shoulders, hands and wrists.
A rheumatologist treats arthritis and autoimmune conditions like lupus, where the body's immune system goes after its own joints and tissue.
An endocrinologist treats hormone problems. Most people know them as the diabetes and thyroid doctors.
The hand surgery part
Runyan told KYMA the point is simple. People won't have to drive to Yuma for this care anymore. And orthopedic problems usually mean several visits, so the savings add up.
Then he said something bigger: "There's no one else in Yuma County that does hand surgery."
That's his claim. I haven't been able to check it against a full list of the county's surgeons. If it holds, it means hand patients across the whole county, not just San Luis, may end up driving south.
What we don't know yet
The coverage of Thursday's welcome didn't say whether these doctors are taking new patients, whether you need a referral, which insurance they take or which languages they speak.
Here's what the public record does show. The Medical Mall's listing with 211 Arizona says it accepts AHCCCS and private insurance. That listing covers the Medical Mall as a whole. Ask whether it applies to these specialists when you call.
If you need them
- Where: San Luis Medical Mall, 151 S. Oak Ave., Suite 400, San Luis. That's at Oak Avenue and County 24th Street.
- Phone: The Regional Center for Border Health lists (928) 366-5180 for the Medical Mall. 211 Arizona lists (928) 662-0406.
- Online: San Luis Walk-In Clinic locations
Where this comes from
- RCBH welcomes four new specialty providers, KYMA, Nov. 5, 2026. Reporting, with an interview with Dr. Todd Runyan. Source for the four providers, their specialties, the location and Runyan's comments.
- San Luis Medical Mall da la bienvenida a nuevos proveedores especialistas, KYMA, Nov. 5, 2026. Spanish-language reporting. Source for Suite 400 and the organizers.
- San Luis Medical Mall listing, 211 Arizona. Resource directory. Source for the street address, insurance and phone number.
- Find Us, Regional Center for Border Health. The operator's own website. Source for its listed Medical Mall phone number.
- Locations, San Luis Walk-In Clinic. The clinic's directory lists the Medical Mall and its phone number.