Dr. Stephen Justin Sims, MD

Dr. Sims practices at BASS Imaging Center - Walnut Creek in Walnut Creek, California.

Dr. Sims' NPI, 1568453264, was assigned on November 2, 2005. Dr. Sims graduated from SUNY Downstate Health Sciences University in 1989. Dr. Sims' California license number on file is G69269.

Dr. Sims' primary practice is BASS Imaging Center - Walnut Creek, at 2637 Shadelands Drive, Walnut Creek, CA 94598. The practice phone is (925) 329-3710.

Dr. Sims' primary practice is BASS Imaging Center - Walnut Creek in Walnut Creek, California. Dr. Sims is also affiliated with Stanford Hospital at 300 Pasteur Drive. The medical group on file is BASS Medical Group. Dmand AI also links Dr. Sims to 2 more hospitals, 1 physician office, 1 group practice or clinic and 1 home health agency, each named with a free account. Dr. Sims' employer is on file too: a breast imaging center.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sims practices, 7 sites in all. Vendor and product names are available with a free account.

Family medicine is Dr. Sims' primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Sims is board certified in family medicine by the American Board of Family Medicine. Dr. Sims has a license on file in California.

Dmand AI lists acne, acute kidney failure, acute skin infection, adjustment disease, aneurysm, aortic atherosclerois, atrial fibrillation and flutter and bipolar disorder among the conditions Dr. Sims treats.

CMS data shows 3,780 Medicare services from Dr. Sims across 24 procedure codes in 2024, for 392 Medicare patients. Medicare paid $296,006 for them. Every service was in an office.

CMS counts 392 Medicare patients who saw Dr. Sims in 2024. The largest group is 65 to 74, with 207 patients. 75% of them have high cholesterol, and 56% have high blood pressure. Their average risk score is 0.95, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Sims' median patient age at 60, with 38% women.

In 2024, Dr. Sims wrote 3,776 Medicare Part D claims for 359 patients. 89% of them were for generic drugs. CMS names the drug for 3,177 of them, across 69 drugs with 11 or more claims each, at $204,694 in total drug cost. In 2023, CMS named 3,079 claims across 65 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Sims for performance year 2024, reported through an alternative payment model (APM). Dr. Sims accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Sims as offering telehealth.

CMS Open Payments shows 40 general payments to Dr. Sims from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 96% of the total. Novo Nordisk Inc paid the most, $192.

Dmand AI lists 1 award for Dr. Sims, most recently CMS Stage 1 EHR in 2012.

Dr. Sims graduated from SUNY Downstate Health Sciences University in 1989.

Dr. Sims is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.