Dr. Seema Misser Johnston, MD

Dr. Johnston practices at Providence Medical Institute in Redondo Beach, California.

Dr. Johnston's NPI, 1215378245, was assigned on July 6, 2013. Dr. Johnston holds California license A138845.

Dr. Johnston's primary practice is Providence Medical Institute, at 520 N Prospect Ave, Redondo Beach, CA 90277 in Los Angeles County. The practice phone is (310) 793-8075.

Dr. Johnston's primary practice is Providence Medical Institute in Redondo Beach, California. Dr. Johnston is also affiliated with Torrance Memorial Medical Center. The medical group on file is Providence Medical Institute. Dmand AI also links Dr. Johnston to 1 more hospital, 1 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. Johnston practices, 4 sites in all. Vendor and product names are available with a free account.

Internal medicine is Dr. Johnston's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Johnston is licensed in California.

CMS data shows 338 Medicare services from Dr. Johnston across 9 procedure codes in 2024, for 131 Medicare patients. Medicare paid $21,154 for them. Every service was in an office.

CMS counts 131 Medicare patients who saw Dr. Johnston in 2024. The largest group is 65 to 74, with 71 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 22% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Johnston's median patient age at 52, with 74% women.

In 2024, Dr. Johnston wrote 1,691 Medicare Part D claims for 225 patients. 92% of them were for generic drugs. CMS names the drug for 1,167 of them, across 41 drugs with 11 or more claims each, at $35,021 in total drug cost. In 2023, CMS named 1,018 claims across 37 drugs.

Dr. Johnston accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Johnston as offering telehealth.

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

CMS Open Payments shows 4 general payments to Dr. Johnston from 4 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Valeant Pharmaceuticals International paid the most, $18.