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Clinic Type

Allergy and Immunology

Address

1440 Ben Sawyer Blvd, Mount Pleasant, SC 29464

Phone

843-792-5864

Email

mychart@muschealth.com

Opening Hours

Mon-Fri 8 a.m.–5 p.m.; Sat Closed; Sun Closed

Services Offered

  • Allergy & Immunology
  • Asthma care
  • Allergy testing
  • Bronchial thermoplasty
  • Pediatric allergies
  • Dermatology collaboration for environmental allergies
  • Ear, nose, & throat collaboration for sinus allergies
  • Drug allergies
  • Eosinophilic disorders
  • Eczema and contact dermatitis
  • Testing for asthma-related symptoms

Technology & Equipment

  • Bronchial thermoplasty
  • Allergy testing (including challenge testing)
  • Testing for asthma and allergies
  • Dermatology and ENT collaboration tools

Team

  • Dr. Maria R. Streck, Board-certified; specializes in allergy and immunology; treats asthma and sinus issues for all ages — Allergy and Immunology Specialist
  • Dr. Kelli Williams, Board-certified; specializes in allergy and immunology; tests and treatments for allergies — Allergy and Immunology Specialist

Insurance & Payment

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Languages Spoken

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FAQs

What are the allergy & immunology clinic hours?

Mon-Fri 8 a.m. to 5 p.m.; Saturday and Sunday Closed.

Where is the Allergy & Immunology clinic located?

1440 Ben Sawyer Blvd Mount Pleasant, SC 29464.

What is the contact number for scheduling appointments at the Mount Pleasant location?

Call (843) 876-8333 to Schedule an Appointment.

Is there another location for Allergy & Immunology within MUSC Health?

Yes, another listed location is 2250 Mall Dr, North Charleston, SC 29406; phone (843) 792-2300.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Healthgrades: 3.9 out of 5 stars (11 ratings)

Patients praise

  • thorough and patient-centered approach
  • effective diagnostic and treatment outcomes
  • knowledgeable and caring staff
  • appreciated pediatric and adult care

Common complaints

  • concerns regarding bedside manner and ego
  • administrative scheduling issues

"I finally had to get firm and realized he has way too much of an ego to do me any beneficial service with my health."

— Healthgrades review of Dr. Thomas Beller

"Using diagnostic test that he developed himself, Dr, Beller isolated the cause of the inflammation and cured it. In addition to being a superb diagnostician, Dr. Beller is very conscientious and approachable."

— Vitals review of Dr. Thomas Beller

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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Hilton Head Island, SC·Allergy and Immunology

Summary: The Allergy, Asthma, & Sinus Center, P.C. is a private medical practice based in Florence, South Carolina, with three U.S. offices. It specializes in allergy, asthma, and sinus care, offering expert insights, strategies, and relief. The practice reports annual revenue around $7.34 million, a small team (3 employees), and a growing regional presence. Contact: info@allergysc.com, phone (843) 679-9335. Website: allergysc.com. Not specifically listed for Hilton Head Island; the centers are in Florence, SC.

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Hilton Head Island, SC·Allergy and Immunology

Allergy & Asthma Center of Hilton Head is a medical practice on Hilton Head Island, SC, offering adult and pediatric allergy and asthma care. Services include allergy testing and treatment, asthma management, hives treatment, mast cell activation syndrome, and sinus disease treatment. They staff two physicians (Dr. Thomas Beller and Dr. Abner Bagenstose) and operate from three offices in Hilton Head. Contact numbers include (843) 689-6442 and (843) 525-9700, with email office@hiltonheadallergy.com. Website: hiltonheadallergy.com.

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