Dr. Scott Thomas Guenthner, MD

Dr. Guenthner practices at Optima Dermatology in Portsmouth, New Hampshire.

Dr. Guenthner's NPI, 1396748778, was assigned on May 31, 2005. Dr. Guenthner graduated from University of Iowa, RJ & L Carver College of Medicine in 1998. Dr. Guenthner holds Indiana license 01051021A.

Dr. Guenthner's primary practice is Optima Dermatology, at 111 New Hampshire Ave, Portsmouth, NH 03801 in Rockingham County. The practice phone is (330) 965-8760.

Dr. Guenthner's primary practice is Optima Dermatology in Portsmouth, New Hampshire. Dr. Guenthner is also affiliated with IU Health Methodist Hospital. The medical group on file is Optima Dermatology. Dmand AI also links Dr. Guenthner to 2 more hospitals, 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. Guenthner practices, 5 sites in all. Vendor and product names are available with a free account.

Dermatology is Dr. Guenthner's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Guenthner is licensed in Indiana.

CMS data shows 7,019 Medicare services from Dr. Guenthner across 19 procedure codes in 2024, for 1,562 Medicare patients. Medicare paid $262,795 for them. Every service was in an office.

CMS counts 1,562 Medicare patients who saw Dr. Guenthner in 2024. The largest group is 65 to 74, with 779 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 1% are also on Medicaid. Their average risk score is 0.95, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Guenthner's median patient age at 71, with 51% women.

In 2024, Dr. Guenthner wrote 1,871 Medicare Part D claims for 663 patients. 89% of them were for generic drugs. CMS names the drug for 1,734 of them, across 23 drugs with 11 or more claims each, at $781,978 in total drug cost. In 2023, CMS named 1,780 claims across 24 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Guenthner for performance year 2024, reported as part of a group. Dr. Guenthner accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 781 procedures of skin biopsy by Dr. Guenthner, more than 98% of the clinicians it reports for that procedure.

Dmand AI links Dr. Guenthner to 13 clinical trials. 2 are still active or recruiting. Conditions studied include Psoriasis, Skin Diseases, Papulosquamous and Dermatitis, Atopic. Eli Lilly and Company sponsors the most, 7. Open Payments lists research payments to Dr. Guenthner that name 14 trials.

CMS Open Payments shows 3,243 general payments to Dr. Guenthner from 54 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 71% of the total. Janssen Pharmaceuticals, Inc paid the most, $439,005. It also lists 90 research payments totaling $301,625 from 2016 to 2024, naming 14 clinical trials.

Dr. Guenthner graduated from University of Iowa, RJ & L Carver College of Medicine in 1998.