Dr. Mark J. Marshall, DO

Dr. Marshall practices at Sharon Hospital in Sharon, Connecticut, part of Northwell Health.

Dr. Marshall's NPI, 1326197963, was assigned on January 10, 2007. Dr. Marshall graduated from New York Institute of Technology College of Osteopathic Medicine - Old Westbury in 1995. Dr. Marshall holds Connecticut license 000529.

Dr. Marshall's primary practice is Sharon Hospital, at 50 Hospital Hill Road, Sharon, CT 06069 in Litchfield County. The practice phone is (860) 364-4228.

Dr. Marshall's primary practice is Sharon Hospital in Sharon, Connecticut, part of Northwell Health. The medical group on file is Danbury Medical Group. Dmand AI also links Dr. Marshall to 1 more hospice and 1 medical group, each named with a free account.

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

Internal medicine is Dr. Marshall's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Marshall is board certified in hospice and palliative medicine by the American Board of Internal Medicine. Dmand AI has Dr. Marshall's licenses on file in 2 states: Connecticut and New York.

Dmand AI lists acute diabetes, cardiac arrhythmia, cellulitis, electrolyte disorders, gastrointestinal bleeding, gastrointestinal obstruction, non-surgical back problems and pneumonia and respiratory infection among the conditions Dr. Marshall treats.

CMS data shows 224 Medicare services from Dr. Marshall across 6 procedure codes in 2024, for 130 Medicare patients. Medicare paid $20,838 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 130 Medicare patients who saw Dr. Marshall in 2024. The largest group is 75 to 84, with 45 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.84, 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. Marshall's median patient age at 79, with 50% women.

In 2024, Dr. Marshall wrote 108 Medicare Part D claims for 45 patients. 89% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $35 in total drug cost. In 2022, CMS named 11 claims across 1 drug.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Marshall for performance year 2024, reported as part of a group. Dr. Marshall accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

CMS Open Payments shows 6 general payments to Dr. Marshall from 2 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $135.

Dr. Marshall graduated from New York Institute of Technology College of Osteopathic Medicine - Old Westbury in 1995. Dr. Marshall is a member of SHM.

Dr. Marshall is in network with 4 carriers, including CMS Medicare, HCSC and NY State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.