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About

Summary: - Marshfield Clinic is a nonprofit health system with 15 U.S. locations, including Marshfield Clinic Wausau, focused on medical care across Wisconsin. - For infectious disease care and appointments at Marshfield Clinic Wausau, you should contact the Wausau campus or check the main site for specialty services, providers, and scheduling. Key action items: - Visit the Marshfield Clinic homepage to locate Wausau-specific services or infectious disease specialists. - Call the main patient access line or the Wausau campus contact to request an infectious disease appointment: - General phone: 800-782- etc. (use the site’s current number) - If you’re seeking a specific infectious disease physician, search the site for “Infectious Disease” or “ID” under Wausau location to view providers, availability, and appointment options. Notes: - Marshfield Clinic operates in northern to western Wisconsin with multiple campuses; use the Wausau location page to find exact infectious disease services and appointment times. - If you need a referral, check whether your insurance requires one and whether telehealth options are available.

Clinic Type

Infectious Disease

Address

1000 N Oak Ave, Marshfield, Wisconsin 54449, US

Phone

Call:(866) 520-2510

Email

hrhelp@sanfordhealth.org

Opening Hours

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

Services Offered

  • Infectious disease care
  • Infectious disease consultations
  • Diagnosis and treatment of infections caused by bacteria, viruses, fungi, and parasites
  • Team-based care
  • Appointment management online through My Marshfield Clinic
  • Referral guidance from primary care physicians

Insurance & Payment

Languages Spoken

FAQs

When should I see an infectious disease specialist?

You may be referred by your primary care provider when an infection is difficult to diagnose, accompanied by high fever, or not responding to standard treatment. If you don’t have a referral but need help, call us and we’ll guide you to the right next step.

Do I need a referral?

You may be referred by your primary care provider when an infection is difficult to diagnose, accompanied by high fever, or not responding to standard treatment. If you don’t have a referral but need help, call us and we’ll guide you to the right next step.

What infections do you treat?

Infectious disease specialists help diagnose and treat infections caused by bacteria, viruses, fungi, and parasites.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Birdeye (Urgent Care): 1.4/5 (5 reviews)
  • Marshfield Clinic (Dr. Rana Nasser): 4.8/5 (33 ratings)

Patients praise

  • high patient satisfaction scores for specific infectious disease specialists (e.g., 4.8/5 rating for Dr. Rana Nasser)
  • providers rated highly for communication, concern for questions, and involvement in treatment decisions

Common complaints

  • complaints regarding billing and insurance issues
  • negative experiences with urgent care staff and accessibility (e.g., turning away patients close to closing time)
  • reports of rude or condescending provider behavior in urgent care settings

"My poor son is suffering terribly with a sore throat. Today, we go to the walk-in (open until 6) at 4:52 pm to be told they stopped taking patients at 4:45….7 minutes! We need a throat swab, that’s it. They refused to take him in…as he standing there bawling in pain."

Birdeye review of Urgent Care Marshfield Clinic Wausau Center

"Provider concern for my questions: 4.9/5; Provider's efforts to include me in treatment decisions: 4.7/5; My likelihood of recommending this provider: 4.8/5."

Marshfield Clinic patient satisfaction data for Dr. Rana Nasser

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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Wausau, WI·Infectious Disease

Summary: Johonna Asquith, MD is an infectious disease physician affiliated with Aspirus, a nonprofit health system headquartered in Wausau, Wisconsin. Aspirus operates 19 hospitals across Wisconsin, Minnesota, and Michigan, and includes Aspirus Wausau Hospital in Wausau as part of its network. For provider-specific details (specialties, contact, and clinic locations) related to Dr. Asquith within Aspirus Providers Wausau, please refer to the Aspirus physician directory or contact Aspirus Health through their main lines or the social media/office contact options.

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Wausau, WI·Infectious Disease

Summary: Aspirus is a nonprofit health system based in Wausau, Wisconsin, operating 19 hospitals across Wisconsin, Minnesota, and Michigan. The system includes Aspirus Wausau Hospital, a major facility offering a wide range of services and programs (e.g., advance care planning, medical records, grief support, and health insurance resources). Aspirus Wausau Hospital has earned distinctions such as Blue Distinction Center for Maternity Care and has a long-standing regional presence with multiple offices and a large workforce. Notes relevant to "Aspirus Infectious Disease Clinic Wausau": - The provided materials describe Aspirus broadly and highlight Aspirus Wausau Hospital as a key facility, but do not specify a standalone "Infectious Disease Clinic" in Wausau. - If you are seeking an infectious disease clinic specifically within Aspirus in Wausau, you may want to contact Aspirus at their main numbers or visit aspirus.org for department listings and scheduling (contact options include socialmedia@aspirus.org and the main phone numbers listed). Key contact pointers: - Main ASPIRUS phone: 800-283-2881 or 715-847-2121 - Website: aspirus.org - Corporate location: 2200 Westwood Dr, Wausau, WI 54401 If you’d like, I can look up current, location-specific details for an infectious disease clinic within the Aspirus system in Wausau.

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