Dr. Michael A. Esparza, MD

Dr. Esparza practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health.

Dr. Esparza's NPI, 1295149540, was assigned on June 15, 2014. Dr. Esparza graduated from Keck School of Medicine of USC in 2014. Dr. Esparza holds California license A138859.

Dr. Esparza's primary practice is John Muir Medical Center, Walnut Creek, at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (925) 939-3000.

Dr. Esparza's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dr. Esparza is also affiliated with Concord Medical Center. The medical group on file is John Muir Health. Dmand AI also links Dr. Esparza to 1 more hospital and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Esparza practices, 3 sites in all. Vendor and product names are available with a free account.

Trauma surgery is Dr. Esparza's primary specialty in the NPI Registry, under taxonomy code 2086S0127X. Dr. Esparza is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Esparza's licenses on file in 2 states: California and Montana.

Dmand AI lists chest trauma, collapsed lung, colon removal, esophagus, stomach, or upper small intestine surgery, gallbladder removal, groin hernia surgery, non-surgical back problems and removal of damaged skin or skin graft among the conditions Dr. Esparza treats.

CMS data shows 374 Medicare services from Dr. Esparza across 8 procedure codes in 2024, for 208 Medicare patients. Medicare paid $41,056 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 208 Medicare patients who saw Dr. Esparza in 2024. The largest group is 75 to 84, with 85 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 1.94, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Esparza's median patient age at 58, with 39% women.

In 2022, Dr. Esparza wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $50 in total drug cost. In 2019, CMS named 19 claims across 1 drug.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Esparza for performance year 2024, reported as part of a group.

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 28 general payments to Dr. Esparza from 9 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 37% of the total. Intuitive Surgical, Inc. paid the most, $3,641.

Dr. Esparza graduated from Keck School of Medicine of USC in 2014.

Dr. Esparza is in network with 3 carriers, including Excellus BlueCross BlueShield, CMS Medicare and NV State Medicaid. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.