East Lansing Primary Care - UM Health-Sparrow
Family Medicine • East Lansing, MI • Since 1896
About
Summary: The page describes University of Michigan Health-Sparrow (formerly Sparrow Health System), a nonprofit, integrated health system based in Lansing, Michigan. It emphasizes broad regional care with multiple services including primary care, pediatric care, emergency and Level 1 Trauma Center, cancer treatment, heart/Thoracic Cardiovascular Institute, Mother Baby Center (4,000 births/year), and community fitness/recreation. The system is undergoing a rebrand to become University of Michigan Health-Sparrow, with communications reflecting both names during the transition. East Lansing Primary Care would fall under Sparrow’s Lansing area network as part of this integrated system. If you’re seeking East Lansing primary care specifically, look for UM Health-Sparrow primary care practices in the Lansing/East Lansing region, and note the relocation of branding to University of Michigan Health-Sparrow in official materials and patient communications.
Clinic Type
Family Medicine
Address
2900 Hannah Blvd., Ste 104 East Lansing, MI 48823
Phone
517.364.8000
info@TheMac.org
Opening Hours
Monday-Thursday 7:00 a.m. – 5:00 p.m.; Friday 7:30 a.m. – 4:00 p.m.
Services Offered
Team
Insurance & Payment
—
Languages Spoken
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- Birdeye (Aggregate of Google and Foursquare): 2.4/5 stars (184 reviews)
- Solv Health: 5.0/5 stars (2 reviews)
- Vitals and WebMD (for Dr. Marissa Miller): 4.2/5 and 4.5/5 stars (21-22 reviews)
- WebMD and Vitals (for Dr. Diane Mater): 4.0/5 and 4.1/5 stars (2-3 reviews)
Patients praise
- Physicians described as compassionate, attentive, and good listeners
- Staff noted as being professional, kind, and friendly in some interactions
- Efficient care experiences and timely services in some instances
- Effective coordination of care and successful health outcomes for some patients
Common complaints
- Communication difficulties including difficulty reaching the office by phone and dropped calls
- Negative interactions with specific providers regarding bedside manner and treatment approaches
- Administrative issues such as failure to send prescriptions to pharmacies
"She is so compassionate and doesn't treat you like a number. if more doctors were like her things would be alot better in this world. she has always treated with so much kindness she listens to you do you understand listens. that is a key word in being a doctor."
— Vitals review for Dr. Marissa Miller"If you're looking for a pill-pushing, parental control averse, absolute nut job...this is your doctor. Nothing in her treatment protocols involving nutrition or wellness."
— WebMD review for Dr. Diane Mater"The Nurse Practitioner did not order my prescription to the drug store after my visit. I tried calling but the calls dropped. I had to return to the office to ask about the prescription."
— Yelp review via MapQuestSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- UM Health-Sparrow, East Lansing Public Schools to open health clinic for young people — Oct 30, 2025
- UM Health-Sparrow opens youth health clinic with East Lansing Public Schools, second in the region • Michigan Advance — Nov 1, 2025
- Amanda K. Baker, DO - UM Health-Sparrow — Oct 14, 2025
- Amy Rumsey - Nurse Practitioner in East Lansing, MI — May 14, 2026
Information sourced from the clinic's website as of July 11, 2026.
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