Photo of Dr. Leann Silhan

Dr. Leann Silhan, MD

Concierge Internal Medicine physician, Dallas, TX

Diamond Health
5.0 (14 reviews)

Dr. Silhan practices at Diamond Physicians in central Dallas after a career on the faculty at Johns Hopkins and UT Southwestern.

8222 Douglas Avenue, Suite 700, Dallas, TX 75225
At a glance
Practice model
Membership practice, works with no insurance
Annual fee
Starts at $2,750 a year

Facts on this page last checked November 2026. How we check doctors

About Dr. Silhan

Dr. Silhan graduated from medical school at UT Southwestern in Dallas. She was on faculty at Johns Hopkins, where she practiced pulmonary and critical care medicine with a focus on interstitial lung diseases and lung transplantation. She was later on faculty at UT Southwestern.

She joined Diamond Physicians in 2020, leaving a career in academic medicine. She offers functional medicine consultations that blend functional medicine principles with natural and conventional care. She also treats allergy and food sensitivity concerns and autoimmune diseases, including scleroderma, lupus, Sjogren's, mixed connective tissue disease and myositis, working alongside rheumatologists.

Diamond Physicians is a direct primary care practice in central Dallas. A year-long membership includes unlimited access to her as primary care provider, unlimited urgent care, discounted labs and imaging, and no wait time. The practice works with no insurance.

Membership and fees

Membership at Diamond Physicians starts at $2,750 a year, with pricing based mainly on age and level of care.

At the top of the range, membership can cost up to $12,000 a year.

Membership includes enhanced physician access, longer appointments and comprehensive preventive care.

Services

Functional medicine consultations Allergy and food sensitivity Autoimmune disease care
What internal medicine doctors commonly treat

Education and credentials

Degree
MD
Medical school
UT Southwestern, Dallas
License
Texas
Board actions
Good standing (checked Nov 2026) None on record Verify with the Texas Medical Board
NPI
1952436172

Hospital and practice affiliations

Former faculty, Johns Hopkins
Former faculty, UT Southwestern

Location

8222 Douglas Avenue, Suite 700, Dallas, TX 75225
Diamond Health practice page
Directions

Recognition and research

Media and books

Answered a hydroxychloroquine and COVID-19 Q&A on the Diamond Physicians blog in May 2020.

Patient reviews

5.0
14 reviews
5 star14
4 star0
3 star0
2 star0
1 star0
Write a review
Rated 5 out of 5

Great!

"Very professional care and consult."

FMDD UserApr 2024
Rated 5 out of 5

Awesome!

"Guided me in choosing the best treatment option."

FMDD UserMar 2024
Rated 5 out of 5

Amazing!

"Enlightened me about my condition."

FMDD UserFeb 2024
Rated 5 out of 5

Awesome!

"Nice clinic, on time, professional care, enlightening consult."

FMDD UserNov 2023

Questions patients ask

Does Dr. Silhan take insurance, or offer a membership?

Diamond Physicians is a direct primary care practice in central Dallas, and the practice works with no insurance. A year-long Diamond membership includes unlimited access to Dr. Silhan as primary care provider, unlimited urgent care, discounted labs and imaging, and no wait time.

How much does a membership at Diamond Physicians cost?

Membership starts at $2,750 a year, with pricing based mainly on age and level of care. It can cost up to $12,000 a year at the top of the range.

Where did Dr. Silhan train?

Dr. Silhan graduated from medical school at UT Southwestern in Dallas.

Where is Dr. Silhan's office?

Dr. Silhan practices at Diamond Physicians in central Dallas.

Does Dr. Silhan offer telehealth?

Diamond Physicians offers virtual consultations.

Does Dr. Silhan treat autoimmune diseases?

Yes, Dr. Silhan treats autoimmune diseases including scleroderma, lupus, Sjogren's, mixed connective tissue disease and myositis, working alongside rheumatologists.

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