Baylor Scott & White Endocrinology Specialists

Diabetes Care • McKinney, TX • 1 (McKinney) locations

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About

Baylor Scott & White Endocrinology Specialists – McKinney in McKinney, TX provides consultation, diagnosis, and management of endocrine and metabolic diseases. Services include diabetes care, glucose monitoring, insulin pump placement and maintenance, bone density testing, dietary counseling, and atherosclerosis assessment. The clinic is staffed by three board-certified endocrinologists and currently accepts physician-to-physician referrals only.

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Clinic Type

Diabetes Care

Address

Endocrinology Specialists – McKinney, McKinney, TX

Phone

+1 469-800-5400

Email

billingquestions@bswhealth.org

Opening Hours

Mon-Fri 8:00am-5:00pm; Sat Closed; Sun Closed

Website

https://www.bswhealth.com/locations/clinic/endocrinology-specialists-mckinney

Telehealth

virtual care available (link provided on site)

Services Offered

Endocrinology
Diabetes care
Consultation
Diagnosis
Management of endocrine and metabolic diseases
Bone density testing
Glucose monitoring
Insulin pump placement and maintenance
Dietary counseling
Lipoprotein/cholesterol analysis
Atherosclerosis assessment

Team

Vivienne Yoon, MD — MD, board-certified in internal medicine, endocrinology, diabetes and metabolism
Jennifer St. John, MD — MD, board-certified in internal medicine, endocrinology, diabetes and metabolism
Sana Ullah, MD — MD, board-certified in internal medicine, endocrinology, diabetes and metabolism

Insurance & Payment

Aetna
American Health Advantage of Texas
Baylor Scott & White Health Plan
Blue Cross Blue Shield
Centivo Network
Cigna
Curative
DFW ConnectedCare
EHN
HealthSmart
Humana
Imagine Health
Nebraska Furniture Mart
Parkland Community Health Plan
PHCS Network
ProCare
QuickTrip
Superior Health Plan
TriWest HealthCare
United HealthCare
WellMed

Insurance listings are subject to change without prior notice. Please call the hospital or health plan to verify coverage information before scheduling your visit/procedure.

Online payment options via Pay a Bill (guest or registered), Pay by mail, Pay by phone, Pay in person, Enrollment in MyBSWHealth for balances and statements

Languages Spoken

English
Español (spanish)

FAQs

What are the hours for Baylor Scott & White Endocrinology Specialists – McKinney?

Open from 8 a.m. until 5 p.m. Mon–Fri; Saturday and Sunday closed.

Where is Baylor Scott & White Endocrinology Specialists – McKinney located?

Located in McKinney, TX.

Who are the physicians at this clinic?

Vivienne Yoon, MD; Jennifer St. John, MD; Sana Ullah, MD.

Can I get referred to this clinic if I am not a physician-to-physician referral?

At this time we are only accepting physician-to-physician referrals.

What insurances are accepted?

Aetna; American Health Advantage of Texas; Baylor Scott & White Health Plan; Blue Cross Blue Shield; Centivo Network; Cigna; Curative; DFW ConnectedCare; EHN; HealthSmart; Humana; Imagine Health; Nebraska Furniture Mart; Parkland Community Health Plan; PHCS Network; ProCare; QuickTrip; Superior Health Plan; TriWest HealthCare; United HealthCare; WellMed (subject to change).

Is there online patient billing and payment options?

Yes. Pay your bill online as a guest or registered user via Pay a Bill. You can also enroll in MyBSWHealth to manage balances and statements.

Awards & Accreditations

awards - see provided links

Photos

What Patients Say

Overall sentiment across review platforms: positive

BSW Health Official Site: 4.9/5 (486 reviews)
BSW Health (Press Ganey Patient Satisfaction Survey): 4.9/5 overall satisfaction (512 patient ratings)

Patients praise

Highly regarded, knowledgeable, and professional physicians
Providers are reported to take time to listen to patient concerns and include them in decision-making
Most patients describe a thorough and kind approach to care
Clinicians are noted for clear communication and explaining conditions well

Common complaints

Occasional complaints regarding administrative issues such as appointment scheduling, long wait times, or confusion at the front desk
Some reports of perceived lack of thoroughness in medical records review or care coordination

"Dr Ullah is my endocrinologist, he is one of the best endocrinologist I am currently visiting. Takes time to listen patient concerns and advise accordingly."

— Healthgrades

"Dr. Lee affords plenty of time for her patient to speak. She is sharp, knowledgeable and caring."

— WebMD

"The front desk is horrible. Confused me with another patient with same last name. After I checked in early/on-time, left me waiting for 90 minutes then..."

— Yelp

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].