Dr. Nicholas Gregg, MD

Dr. Gregg practices at Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic.

Dr. Gregg's NPI, 1528401296, was assigned on April 12, 2013. Dr. Gregg graduated from University of Pittsburgh School of Medicine in 2013. Dr. Gregg's Minnesota license number on file is 62004.

Dr. Gregg's primary practice is Mayo Clinic Hospital, Saint Marys Campus, at 1216 Second Street Southwest, Rochester, MN 55902 in Olmsted County. The practice phone is (507) 255-5123.

Dr. Gregg's primary practice is Mayo Clinic Hospital, Saint Marys Campus in Rochester, Minnesota, part of Mayo Clinic. The medical group on file is Mayo Clinic. Dmand AI also links Dr. Gregg to 2 more medical groups and 1 hospice, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gregg practices, 2 sites in all. Vendor and product names are available with a free account.

Epilepsy is Dr. Gregg's primary specialty in the NPI Registry, under taxonomy code 2084E0001X. Dr. Gregg is board certified in clinical neurophysiology by the American Board of Psychiatry and Neurology. Dmand AI has Dr. Gregg's licenses on file in 4 states: Minnesota, Wisconsin, Illinois and Pennsylvania.

Dmand AI lists epilepsy among the conditions Dr. Gregg treats.

CMS data shows 99 Medicare services from Dr. Gregg across 4 procedure codes in 2024, for 124 Medicare patients. Medicare paid $19,095 for them.

CMS counts 124 Medicare patients who saw Dr. Gregg in 2024. The largest group is 75 to 84, with 43 patients. 65% of them have high blood pressure, and 65% have high cholesterol. 25% are also on Medicaid. Their average risk score is 1.47, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Gregg's median patient age at 53, with 47% women.

In 2024, Dr. Gregg wrote 335 Medicare Part D claims for 50 patients. 77% of them were for generic drugs. CMS names the drug for 278 of them, across 10 drugs with 11 or more claims each, at $45,797 in total drug cost. In 2023, CMS named 341 claims across 13 drugs.

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

Dmand AI links 57 papers to Dr. Gregg, published from 2010 to 2025. 2023 was the busiest year, with 12. The most frequent topics are Electroencephalography, Epilepsy and Deep Brain Stimulation. Dr. Gregg has published most often in Epilepsia. Dr. Gregg's most frequent co-authors are Gregory A. Worrell, MD, Brian Nils Lundstrom, PhD and Kai Joshua Miller, MD, PhD.

CMS Open Payments shows 5 general payments to Dr. Gregg from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Medtronic USA, Inc. paid the most, $202.

Dr. Gregg graduated from University of Pittsburgh School of Medicine in 2013.

Dr. Gregg is in network with 15 carriers, including Aetna, Medica and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.