Dr. Mark E. Haan, MD

Dr. Haan practices at Corewell Health Big Rapids Hospital Professional in Fremont, Michigan.

Dr. Haan's NPI, 1689608200, was assigned on July 10, 2006. Dr. Haan graduated from Wayne State University School Of Medicine in 1995. Dr. Haan's Michigan license number on file is MH065594.

Dr. Haan's primary practice is Corewell Health Big Rapids Hospital Professional, at 705 E Oak St, Fremont, MI 49412 in Newaygo County. The practice phone is (231) 796-7607.

Dr. Haan's primary practice is Corewell Health Big Rapids Hospital Professional in Fremont, Michigan. Dr. Haan is also affiliated with Corewell Health Big Rapids Hospital. The medical group on file is Mecosta County Medical Center. Dmand AI also links Dr. Haan to 1 more hospital, 2 medical groups and 1 group practice or clinic, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Haan practices, 3 sites in all. Vendor and product names are available with a free account.

Surgery is Dr. Haan's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Haan is board certified in surgery by the American Board of Surgery. Dr. Haan has a license on file in Michigan.

Dmand AI lists acute gallbladder or bile duct inflammation, appendectomy, colonoscopy, colon removal, esophagus, stomach, or upper small intestine surgery, gallbladder removal, groin hernia surgery and intestinal or bowel obstruction among the conditions Dr. Haan treats.

CMS data shows 53 Medicare services from Dr. Haan across 3 procedure codes in 2024, all of them office visits, for 72 Medicare patients. Medicare paid $4,198 for them. Every service was in an office.

CMS counts 72 Medicare patients who saw Dr. Haan in 2026. The largest group is 65 to 74, with 32 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 28% 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. Haan's median patient age at 62, with 45% women.

In 2026, Dr. Haan wrote 148 Medicare Part D claims for 132 patients. 85% of them were for generic drugs. CMS names the drug for 104 of them, across 2 drugs with 11 or more claims each, at $2,510 in total drug cost. In 2023, CMS named 127 claims across 2 drugs.

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

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)

Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)

Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)

Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 109 general payments to Dr. Haan from 3 drug and device companies from 2016 to 2022. Education make up the largest share, 89% of the total. Intuitive Surgical, Inc. paid the most, $87,898.

Dmand AI lists 1 award for Dr. Haan, most recently CMS Stage 1 EHR in 2013.

Dr. Haan graduated from Wayne State University School Of Medicine in 1995. Dr. Haan is a member of SLS.

Dr. Haan is in network with 20 carriers, including Elevance, Aetna and Health Alliance Plan. HMO plans come from the most carriers, 12. Check the plan with the practice before a visit.