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About

Amarillo Medical Specialists LLP is a privately held medical practice based in Amarillo, Texas, founded in 1994. It operates as a comprehensive adult primary care group with access to a broad range of subspecialists, including gynecology, pulmonary disease, rheumatology, endocrinology, diabetes, kidney disease, infectious diseases, and neurology. The practice employs about 41 people and generates roughly $12.9 million in annual revenue. It has five offices in Amarillo, with the headquarters at 1215 S Coulter St, Ste 400, Amarillo, TX 79106, and additional locations on Coulter Street. Contact: (806) 350-7520 or +1 806-358-8331. Website: amarillomed.com.

Clinic Type

Endocrinology

Address

9092 Westgate Pkwy W, Amarillo, TX 79124; Coulter Office: 1900 Coulter St, Amarillo, TX 79106

Phone

(806) 350-7311

Email

Opening Hours

Open Monday–Friday 8:00 a.m. to 6:00 p.m.; Saturday 9:00 a.m. to 3:00 p.m. (Urgent Care Clinic hours; main clinic hours may differ)

Emergency Care

Call 911 for emergencies

Services Offered

  • Endocrinology/Diabetes
  • Endocrinology
  • Diabetes care

Team

  • William C. Biggs, MD, FACE, MD, FACE — Endocrinologist

Insurance & Payment

  • Blue Cross Blue Shield of Texas (out of network for some plans as of May 1, 2026)

Out of network with certain BCBS Texas plans effective May 1, 2026; patients should review insurance benefits and options; continuity of care may apply for chronic conditions (form available: https://www.bcbstx.com/docs/forms/provider/tx/transitional-care-request-tx.pdf)

Languages Spoken

FAQs

What are the hours for after-hours urgent, non-emergency care?

On-site Urgent Care Clinic is open Monday through Friday from 8:00 a.m. to 6:00 p.m and on Saturday from 9:00 a.m. to 3:00 p.m.

How can I contact the clinic for questions or medical guidance?

Contact your provider directly through the Patient Portal.

What should I do if AISD closes due to weather?

AMS follows AISD closures; if AISD closes, AMS will also be closed.

Is AMS in-network with BCBS Texas?

AMS contracts status with BCBS Texas is changing; some plans are out-of-network effective May 1, 2026; review benefits and options.

Where are AMS locations?

Main Office: 9092 Westgate Pkwy W, Amarillo, TX 79124; Coulter Office: 1900 Coulter St, Amarillo, TX 79106.

Awards & Accreditations

  • Texas Super Doctors 2025 (Endocrinology)
  • Texas Super Doctors 2025 (Endocrinology – William C. Biggs, MD)
  • Texas Super Doctors 2025 (Christopher Gulley, MD)
  • Texas Super Doctors 2025 (Alan Keister, MD)
  • Medicine Texas Super Doctors 2025 (Susan Neese, MD)
  • Texas Super Doctors 2025 (Steven Norris, MD)
  • Texas Super Doctors 2025 (Lawrence Schaeffer, MD)
  • Texas Rising Stars 2025 (Joanna Wilson, DO)
  • Texas Rising Stars 2025 (Ryan Batson Smithee, MD)

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • LocateHub (specific office): 5.0 out of 5 stars (25 reviews)

Patients praise

  • Physicians described as great or compassionate
  • Attentive care from specific providers

Common complaints

  • Difficulty reaching staff via phone or getting return calls
  • Administrative staff perceived as incompetent or unfriendly

"Amarillo Medical Specialists is really trying to incorporate a Mayo Clinic model, but they are hindered by incompetent, unfriendly, and even [staff]."

Reddit

"My husband has been calling for over a week and leaving voicemails without a call or any form of communication back. They do not answer, or make attempts to ..."

Yelp

"...physicians who are “great,” “literally the best Doctor to work with,” and “a blessing to the whole office.”"

Nextdoor

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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