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About

Aspirus Endocrinology Clinic in Wausau is part of the Aspirus Health system, a nonprofit hospital and healthcare network headquartered in Wausau, Wisconsin. The system operates 19 hospitals across Wisconsin, Minnesota, and the western Upper Peninsula of Michigan, and includes specialized services such as endocrinology among its offerings. Key context about Aspirus: - Nonprofit health system based in Wausau, WI. - Aspirus Wausau Hospital is a primary facility in the network, with additional locations and clinics under Aspirus Health. - The organization emphasizes advance care planning, medical records, billing resources, classes/events, grief support, and health insurance marketplace services. - Notable recent activity includes organizational expansions (e.g., Saint Luke’s Duluth affiliation) and investments in Keweenaw/Laurium facilities; the system also has accreditation highlights (e.g., Blue Distinction Center for Maternity Care) and recognized clinical programs. If you’re specifically looking for details about the Aspirus Endocrinology Clinic in Wausau (address, hours, providers, services like diabetes management, thyroid disease, osteoporosis, etc.), I can fetch or summarize those particulars if you’d like.

Clinic Type

Endocrinology

Address

425 Pine Ridge Boulevard, Suite 220A, Wausau, WI 54401

Phone

715-847-2070

Email

jobs@aspirus.org

Opening Hours

Mon 8:00AM - 4:30PM; Tue 8:00AM - 4:30PM; Wed 8:00AM - 4:30PM; Thu 8:00AM - 4:30PM; Fri 8:00AM - 4:30PM; Sat Closed; Sun Closed

Services Offered

  • Clinical Nutrition
  • Endocrinology
  • Endocrinology, Diabetes and Metabolism

Team

  • Katy Anderson — APNP, RD
  • Ashley St. Clair — APNP

Insurance & Payment

Please contact the doctor's office to verify that your insurance is accepted.

Languages Spoken

FAQs

What are the clinic hours?

Mon–Fri 8:00 AM–4:30 PM; Sat and Sun Closed.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Yelp: No overall numeric rating provided in the snippet
  • Healthgrades (clinic listing): 14 Ratings (numeric average not shown in snippet) (14 ratings)
  • WebMD (Dr. John Carroll): 4.0 out of 5 (4 ratings)
  • Vitals (Dr. John Carroll): 2.3 out of 5 (3 ratings; 2 written reviews mentioned)
  • WebMD (Wendy Mattlin): 5.0 out of 5 (4 ratings; 1 review)

Patients praise

  • Some clinicians are described as caring and thorough (e.g., Wendy Mattlin on WebMD)
  • Patients report being treated with kindness and respect on at least one review site

Common complaints

  • Some reviews complain about staffing/continuity and poor experience
  • Some reviews allege missed diagnoses and outdated/unresponsive care (especially about Dr. John Carroll)
  • Some reviews report administrative/process issues such as delayed prescriptions, appointment cancellations, and lack of follow-up

""Dr. Wendy Mattlin is a very caring doctor... She takes her time with you and makes sure to explain things so you can understand""

WebMD review snippet for Wendy Mattlin

""they are short staffed and keep nobody at this company... Never recommending this company again. BUYER BEWARE.""

Yelp review snippet for Aspirus Endocrinology Clinic - Wausau

""Arrogant and ignorant. Completely missed my diagnoses and wasted over a year of my life...""

Vitals review snippet for Dr. John Carroll

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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