Dr. Gregory J. Katz, MD

Dr. Katz practices at Newport Medicine Group, Inc. in Newport Beach, California.

Dr. Katz's NPI, 1184674178, was assigned on May 11, 2006. Dr. Katz graduated from Albert Einstein College of Medicine in 1991. Dr. Katz holds California license G76136.

Dr. Katz's primary practice is Newport Medicine Group, Inc., at 520 Superior Ave, Newport Beach, CA 92663 in Orange County. The practice phone is (949) 642-2333.

Dr. Katz's primary practice is Newport Medicine Group, Inc. in Newport Beach, California. Dr. Katz is also affiliated with Hoag Hospital Newport Beach. The medical group on file is Newport Medicine Group. Dmand AI also links Dr. Katz to 1 more group practice or clinic and 1 home health agency, each named with a free account.

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

Internal medicine is Dr. Katz's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Katz is board certified in internal medicine by the American Board of Internal Medicine. Dr. Katz is licensed in California.

Dmand AI lists acid reflux, acute sinusitis, acute skin infection, alzheimer's disease, aneurysm, ankle or foot injury, anxiety and atrial fibrillation and flutter among the conditions Dr. Katz treats.

CMS data shows 1,595 Medicare services from Dr. Katz across 13 procedure codes in 2024, for 551 Medicare patients. Medicare paid $121,784 for them. Every service was in an office.

CMS counts 551 Medicare patients who saw Dr. Katz in 2024. The largest group is 75 to 84, with 256 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 2% are also on Medicaid. Their average risk score is 1.07, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Katz's median patient age at 76, with 52% women.

In 2024, Dr. Katz wrote 12,288 Medicare Part D claims for 901 patients. 85% of them were for generic drugs. CMS names the drug for 11,553 of them, across 153 drugs with 11 or more claims each, at $1,257,296 in total drug cost. In 2023, CMS named 11,844 claims across 161 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 79 out of 100 for Dr. Katz for performance year 2024, reported individually. Dr. Katz accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Katz as offering telehealth.

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

Dmand AI links 1 paper to Dr. Katz. Dr. Katz's most frequent co-authors are Joseph Anthony Bosco, MD, Gregory M. Katz, MD and Crispin Ong, MD.

CMS Open Payments shows 1,152 general payments to Dr. Katz from 78 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. AstraZeneca Pharmaceuticals LP paid the most, $2,330.

Dmand AI lists 1 award for Dr. Katz, most recently CMS Stage 1 EHR in 2013.

Dr. Katz graduated from Albert Einstein College of Medicine in 1991.

Dr. Katz is in network with 12 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.