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About

Marshfield Clinic is a nonprofit integrated health system founded in 1916 and based in Marshfield, Wisconsin, with over 50 locations across northern, central, and western Wisconsin. It operates as Marshfield Clinic Health System (MCHS), now part of Sanford Health, and employs more than 2,100 clinicians across medical, research, education, and administrative roles. The system includes hospitals, clinics, a medical research institute, and education divisions, offering comprehensive adult medicine services through its network of physicians and specialists. Key details: - Headquarters: Marshfield, WI - Services: Primary care and specialty care (including internal medicine/adult health), hospitals, clinics, medical research, education - Locations: 50+ clinics/hospitals in Wisconsin; 15 listed offices in Wisconsin (e.g., Marshfield HQ at 1000 N Oak Ave, Marshfield, WI) - Contact: Main phone numbers: 800-782-8581, 715-387-5511 - Website: marshfieldclinic.org If you’re specifically seeking Internal Medicine / Adult Health specialists at Marshfield Clinic, they have internal medicine physicians and subspecialists across their network, with active openings for related clinical roles and a wide range of adult health services within the Marshfield Clinic Health System.

Clinic Type

Internal Medicine

Address

1000 N Oak Ave, Marshfield, Wisconsin 54449, US

Phone

(866) 520-2510

Email

hrhelp@sanfordhealth.org

Opening Hours

Monday-Friday 8 a.m. - 5 p.m.

Services Offered

  • Internal Medicine
  • Adult health care
  • Chronic disease management
  • Preventive care
  • Geriatric care
  • Care coordination
  • Immunizations
  • Cancer screenings
  • Mental health support

Insurance & Payment

Languages Spoken

FAQs

Does Marshfield Clinic accept Medicare?

Yes (explicit in page highlights)

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Marshfield Clinic Official Website: Typically ~4.8–4.9 out of 5 for individual internists (e.g., Drs. Suliman, Kasirye, Polireddy, Warrick)
  • Yelp: 1.2 out of 5 (51 reviews)
  • PissedConsumer: 1.5 out of 5 (75 reviews)

Patients praise

  • High ratings for individual internal medicine providers on clinic website
  • Providers noted as attentive and good listeners
  • Structured and transparent display of internal provider ratings via Press Ganey surveys

Common complaints

  • Issues with billing transparency and overcharging
  • Dissatisfaction with customer service and billing departments
  • Negative experiences regarding medical care quality and communication
  • Reports of difficult or unhelpful patient support/nurseline interactions

"Marshfield Clinic owes me $1,000. I was overcharged three times... I have yet to receive a refund. I have been promised this multiple times over the phone... Every time I call the help line and give my case number, it leads to a dead end."

Better Business Bureau Reviews

"Had a "call" with the nurseline that was condescending and about as unproductive as can be. I have no interest in being talked to like a 5 year old..."

Birdeye Reviews

"I genuinely listen to all my patients' concerns."

Dr. Rayan S. Suliman, Marshfield Clinic Provider Profile

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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