Dr. Erik D. Assarsson, MD

Dr. Assarsson practices at Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System.

Dr. Assarsson's NPI, 1306891338, was assigned on May 25, 2006. Dr. Assarsson graduated from Rutgers Robert Wood Johnson Medical School in 1989. Dr. Assarsson holds Pennsylvania license MD048428L.

Dr. Assarsson's primary practice is Bryn Mawr Hospital, at 130 South Bryn Mawr Ave, Bryn Mawr, PA 19010 in Montgomery County. The practice phone is (610) 526-3000.

Dr. Assarsson's primary practice is Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System. Dr. Assarsson is also affiliated with Hospital of the University of Pennsylvania. The medical group on file is Main Line Radiation Oncology. Dmand AI also links Dr. Assarsson to 2 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Assarsson practices, 5 sites in all. Vendor and product names are available with a free account.

Radiation oncology is Dr. Assarsson's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Assarsson is board certified in radiation oncology by the American Board of Radiology. Dmand AI has Dr. Assarsson's licenses on file in 2 states: Pennsylvania and New Jersey.

Dmand AI lists anal cancer radiation, bladder cancer radiation, bone cancer radiation, brain cancer radiation, brain tumor radiation, cancer radiation-upper GI, colorectal cancer radiation and head & neck cancer radiation among the conditions Dr. Assarsson treats.

CMS data shows 4,424 Medicare services from Dr. Assarsson across 25 procedure codes in 2024, for 281 Medicare patients. Medicare paid $309,031 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 281 Medicare patients who saw Dr. Assarsson in 2024. The largest group is 75 to 84, with 121 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.98, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Assarsson's median patient age at 73, with 50% women.

In 2024, Dr. Assarsson wrote 205 Medicare Part D claims for 89 patients. 96% of them were for generic drugs. CMS names the drug for 86 of them, across 6 drugs with 11 or more claims each, at $644 in total drug cost. In 2023, CMS named 69 claims across 5 drugs.

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

CMS Open Payments shows 155 general payments to Dr. Assarsson from 32 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $424.

Dmand AI lists 2 awards for Dr. Assarsson, most recently Top Doctor in 2021.

Dr. Assarsson graduated from Rutgers Robert Wood Johnson Medical School in 1989.

Dr. Assarsson is in network with 16 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 10. Check the plan with the practice before a visit.