Dr. Gerald Frank Katz, MD

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

Dr. Katz's NPI, 1306868450, was assigned on July 24, 2006. Dr. Katz graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1989. Dr. Katz holds California license G75401.

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

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Katz practices, 4 sites in all. Vendor and product names are available with a free account.

Obstetrics and gynecology is Dr. Katz's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Katz is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Katz is licensed in California.

Dmand AI lists hysterectomy, menopause, ovarian cyst, pelvic prolapse and vaginal infection among the conditions Dr. Katz treats.

CMS data shows 333 Medicare services from Dr. Katz across 8 procedure codes in 2024, for 132 Medicare patients. Medicare paid $17,780 for them. Every service was in an office.

CMS counts 132 Medicare patients who saw Dr. Katz in 2024. The largest group is 65 to 74, with 61 patients. 72% of them have high cholesterol, and 47% have high blood pressure. 8% are also on Medicaid. Their average risk score is 0.77, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Katz's median patient age at 44, with 98% women.

In 2024, Dr. Katz wrote 335 Medicare Part D claims for 92 patients. 85% of them were for generic drugs. CMS names the drug for 217 of them, across 8 drugs with 11 or more claims each, at $19,835 in total drug cost. In 2023, CMS named 157 claims across 6 drugs.

Dr. Katz accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

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

CMS Open Payments shows 268 general payments to Dr. Katz from 36 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 93% of the total. Abbvie Inc. paid the most, $913.

Dr. Katz graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1989.

Dr. Katz is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.