Dr. Martin D. Ollenschleger, MD

Dr. Ollenschleger practices at Hartford Hospital in Hartford, Connecticut, part of Hartford HealthCare.

Dr. Ollenschleger's NPI, 1407053655, was assigned on June 29, 2007. Dr. Ollenschleger graduated from Rutgers New Jersey Medical School in 2002. Dr. Ollenschleger holds Connecticut license 48892.

Dr. Ollenschleger's primary practice is Hartford Hospital, at 80 Seymour Street, Hartford, CT 06102 in Hartford County. The practice phone is (860) 545-5000.

Dr. Ollenschleger's primary practice is Hartford Hospital in Hartford, Connecticut, part of Hartford HealthCare. The medical group on file is Hartford Hospital. Dmand AI also links Dr. Ollenschleger to 1 more hospital, 5 group practices and clinics and 5 medical groups, each named with a free account. Dr. Ollenschleger's employer is on file too: a hospital.

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

Neuroradiology is Dr. Ollenschleger's primary specialty in the NPI Registry, under taxonomy code 2085N0700X. Dmand AI has Dr. Ollenschleger's licenses on file in 2 states: Connecticut and New York.

CMS data shows 43 Medicare services from Dr. Ollenschleger across 2 procedure codes in 2024, for 55 Medicare patients. Medicare paid $6,098 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 55 Medicare patients who saw Dr. Ollenschleger in 2024. The largest group is 65 to 74, with 18 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 22% are also on Medicaid. Their average risk score is 1.40, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Ollenschleger's median patient age at 70, with 51% women.

In 2024, Dr. Ollenschleger wrote 114 Medicare Part D claims for 29 patients. 98% of them were for generic drugs. CMS names the drug for 86 of them, across 4 drugs with 11 or more claims each, at $1,022 in total drug cost. In 2023, CMS named 59 claims across 3 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Ollenschleger for performance year 2024, reported as part of a group. Dr. Ollenschleger accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Dmand AI links 15 papers to Dr. Ollenschleger, published from 2013 to 2025. 2023 was the busiest year, with 3. The most frequent topics are Embolization, Therapeutic, Hematoma, Subdural, Chronic and Meningeal Arteries. Dr. Ollenschleger has published most often in Brain Circ. Dr. Ollenschleger's most frequent co-authors are Smit Dilipkumar Patel, MBBS, MPH, Brendan Dyer Killory, MD and Inam U. Kureshi, MD.

CMS Open Payments shows 36 general payments to Dr. Ollenschleger from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 47% of the total. MicroVention, Inc. paid the most, $1,084.

Dr. Ollenschleger graduated from Rutgers New Jersey Medical School in 2002.