3 Best Endocrinologists in McKinney, TX

Expert-recommended Top 3 Endocrinologists in McKinney, Texas. All of our endocrinologists actually face a rigorous 50-Point Inspection, which includes customer reviews, history, complaints, ratings, satisfaction, trust, cost and general excellence. You deserve only the best!

Vivienne Yoon, MD - McKinney, TX Endocrinologists - Doctor Portrait Image
Vivienne Yoon, MD - McKinney, TX Endocrinologists - Exterior Image
Vivienne Yoon, MD - McKinney, TX Endocrinologists - Clinic Logo
10+ YEARS IN TBR
CALL EMAIL

VIVIENNE YOON, MD

BAYLOR SCOTT & WHITE ENDOCRINOLOGY SPECIALISTS
5220 West University Drive POB II, Suite 250,
McKinney, TX 75071 Directions

Since 2006

Specialty:

Hyperthyroidism Adrenal Pituitary Gland Metabolic Bone Disease Adrenal Tumors Calcium-related Disorders Hyperparathyroidism Osteoporosis Hypothyroidism Lipid Adrenal Insufficiency Vitamin D Deficiency Hypopituitarism Thyroid Cancer Lipid Disorders Pituitary Tumors Adult Diabetes Glucose Monitoring and Treatments Diabetic Polyneuropathy

" Dr. Vivienne Yoon obtained her medical education from the University of Texas Medical Branch at Galveston in 2006 and her residency and internship from Wake Forest University. She completed her Fellowship in Endocrinology, Diabetes, and Metabolism at UT Southwestern Medical Center. Dr. Vivienne Yoon is board-certified in Endocrinology, Diabetes, and Metabolism by the American Board of Internal Medicine. She currently practices at Baylor Scott And White Medical Center in McKinney. She warmly welcomes new patients to her practice and accepts various health insurance plans.

2026 Highlights: Dr. Vivienne Yoon has over 20 years of medical experience and provides services in English. "

Reviews   |   Write a Review
Best Doctor in 2015 & 2019
License #N9495

Contact:

(469) 800-5400

Mon-Fri: 8am - 5pm
Sat & Sun: Closed

TBR® Inspection Report:

9+ YEARS IN TBR
CALL EMAIL

MUHAMMAD S. SIDDIQUI, MD

TEXAS ASSOCIATES OF ENDOCRINOLOGY & DIABETES, P.A.
4521 Medical Center Drive, Suite 400,
McKinney, TX 75069 Directions

Since 2014

Specialty:

Type 1 and Type 2 Diabetes Thyroid Disorders Obesity Lipid Disorders Pituitary and Adrenal Disorders Management Diabetes Mellitus Growth Hormone Deficiency and Excess Osteoporosis and Metabolic Bone Diseases Weight and Wellness Solutions Calcium and Mineral Disorders Hypothyroidism and Hyperthyroidism Elevated Blood and Urine Glucose Levels

" Dr. Muhammad S. Siddiqui obtained his medical education from the Sindh Medical College in Karachi in 2008 and his residency in internal medicine from St. Luke's Hospital. He earned his Fellowship in Endocrinology at The University of Texas Southwestern Medical Center in Dallas, Texas, in 2014. He has over 17 years of experience in the field of endocrinology. He specializes in endocrinology and diabetes and currently practices at Texas Associates of Endocrinology & Diabetes, P.A. Dr. Muhammad S. Siddiqui is affiliated with Medical City McKinney in McKinney, Texas. He warmly welcomes new patients to his practice.

2026 Highlights: Dr. Muhammad S. Siddiqui's practice serves a diverse patient base, with care available in English, Hindi, Urdu, and Tamil. "

Reviews | Play Video | Write a Review
Best Endocrinologists by D Magazine in 2020
In Collin County, Dr. Siddiqui has been placed as Best Doctor in 2022
License #Q5278

Contact:

(214) 547-7557

Mon-Thu: 8:15am - 5am
Fri: 8:15am - 12:30pm
Sat & Sun: Closed

TBR® Inspection Report:

Sana Ullah, MD - McKinney, TX Endocrinologists - Doctor Portrait Image
Sana Ullah, MD - McKinney, TX Endocrinologists - Exterior Image
Sana Ullah, MD - McKinney, TX Endocrinologists - Clinic Logo
CALL

SANA ULLAH, MD

BAYLOR SCOTT & WHITE ENDOCRINOLOGY SPECIALISTS
5220 West University Drive POB II, Suite 250,
McKinney, TX 75071 Directions

Since 2001

Specialty:

Diabetes Hypogonadism Lipid Disorders Obesity Osteoporosis Parathyroid Calcium Disorders Pituitary and Adrenal Disorders Thyroid Diseases

" Dr. Sana Ullah completed his medical school at Nishtar Medical College. He earned his Internship in Internal Medicine from the University of South Dakota and his Endocrinology, Diabetes, and Metabolic Diseases Fellowship from Thomas Jefferson University Hospital. Dr. Sana Ullah is board-certified in Internal Medicine by the American Board of Internal Medicine and has an archived certification in Endocrinology, Diabetes, and Metabolism. Dr. Sana Ullah brings 25 years of experience to his endocrinology practice. He holds an affiliation with Baylor Scott & White Medical Center, McKinney.

2026 Highlights: Dr. Sana Ullah provides services in English. He accepts new patients and offers telehealth appointments. "

Reviews   |   Write a Review
License #S1939

Contact:

(469) 800-5400

Mon-Fri: 8am - 5pm
Sat & Sun: Closed

TBR® Inspection Report: