Dr. Peter N. Mattar, MD

Dr. Mattar practices at Circle City Medical Group in Norco, California.

Dr. Mattar's NPI, 1417005422, was assigned on January 8, 2007. Dr. Mattar graduated from Loma Linda University School Of Medicine in 2005. Dr. Mattar's California license number on file is A97235.

Dr. Mattar's primary practice is Circle City Medical Group, at 1901 Town & Country Dr, Norco, CA 92860 in Riverside County. The practice phone is (951) 737-8141.

Dr. Mattar's primary practice is Circle City Medical Group in Norco, California. The medical group on file is Citrus Valley Medical Associates. Dmand AI also links Dr. Mattar to 3 more hospices, 2 physician offices, 2 group practices and clinics and 1 medical group, each named with a free account.

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

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

Dmand AI lists aneurysm, chronic diabetes, chronic hypertension, chronic sinusitis, corns and calluses, diabetic emergency, drug use disorders and enthesopathy in arms among the conditions Dr. Mattar treats.

CMS data shows 155 Medicare services from Dr. Mattar across 4 procedure codes in 2024, for 96 Medicare patients. Medicare paid $11,238 for them. Every service was in an office.

CMS counts 96 Medicare patients who saw Dr. Mattar in 2024. The largest group is 65 to 74, with 53 patients. 57% of them have high cholesterol, and 54% have high blood pressure. 27% are also on Medicaid. Their average risk score is 1.32, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Mattar's median patient age at 61, with 42% women.

In 2024, Dr. Mattar wrote 6,428 Medicare Part D claims for 600 patients. 90% of them were for generic drugs. CMS names the drug for 5,724 of them, across 111 drugs with 11 or more claims each, at $1,058,626 in total drug cost. In 2023, CMS named 5,277 claims across 99 drugs.

Dr. Mattar accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Mattar 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. Mattar. Dr. Mattar's most frequent co-author is Eugene Y. Hwang, MD.

Dmand AI links Dr. Mattar to 4 clinical trials. 2 are still active or recruiting. Conditions studied include Diabetes Mellitus, Type 2, Obesity and Osteoarthritis, Knee. Eli Lilly and Company sponsors the most, 3. Open Payments lists research payments to Dr. Mattar that name 3 trials.

CMS Open Payments shows 221 general payments to Dr. Mattar from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 71% of the total. Shionogi Inc paid the most, $1,069. It also lists 3 research payments totaling $1,403 in 2023, naming 3 clinical trials.

Dmand AI lists 5 awards for Dr. Mattar, most recently Health Care Transformation Certificate in 2025.

Dr. Mattar graduated from Loma Linda University School Of Medicine in 2005.

Dr. Mattar is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.