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Board-Certified Internal Medicine & Obesity Medicine Physician Delivering Evidence-Informed Functional Medicine and Precision-Based Care
Board-Certified in Obesity Medicine
Diplomate, American Board of Internal Medicine
Certified in Functional Medicine
Certified in Advanced Hormone Optimization
Trained in Advanced Peptide Therapeutics
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Diploma in Integrative Ayurvedic Medicine
Research Cited on PubMed
Marquis Who’s Who Honoree
Dr. Simranjit Singh is a board-certified physician with advanced training in Functional Medicine and precision-based clinical care.
His work combines conventional medical training with systems-oriented functional medicine to help patients better understand potential contributors to chronic symptoms, metabolic dysfunction, inflammation, hormone imbalances, and long-term health concerns.
Dr Singh is board-certified in Internal Medicine and Obesity Medicine, with advanced training in Functional Medicine and precision-based care.
He completed his Internal Medicine training at the University of Illinois and previously served as a hospitalist and faculty physician at Indiana University Health Methodist Hospital.
During this time, he managed complex medical cases, collaborated with multidisciplinary teams, and contributed to patient care and clinical operations within an academic medical environment.
Dr Singh has authored more than 30 peer-reviewed scientific publications, contributed to multiple medical book chapters, and co-authored American College of Radiology Appropriateness Criteria guidelines used by physicians internationally.
His work reflects a strong foundation in evidence-based medicine, clinical reasoning, and systems-level thinking.
The Functional MDs was built on the belief that functional medicine should be grounded in rigorous medical training, individualized care, and evidence-informed clinical decision-making.
Professional Profiles:
Board Certifications:
American Board of Internal Medicine (ABIM)
American Board of Obesity Medicine (ABOM)
Advanced Training:
Functional Medicine
Precision-Based Care
Academic Contributions:
30+ Peer-Reviewed Scientific Publications
Co-Author of American College of Radiology Appropriateness Criteria Guidelines
Multiple Medical Book Chapters
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At The Functional MDs, Dr Singh focuses on delivering a comprehensive physician-led model of care grounded in clinical reasoning, advanced diagnostics, and individualized medicine.
Care begins with a detailed evaluation of symptoms, medical history, laboratory data, lifestyle factors, metabolic health, and systems-based patterns that may contribute to chronic disease and unresolved health concerns.
Rather than relying on generalized recommendations, treatment strategies are personalized based on each patient’s clinical presentation, goals, and physiology.
Advanced laboratory testing is recommended selectively and strategically when results are expected to meaningfully influence clinical decision-making.
The goal is to provide clarity, structure, measurable progress, and long-term health optimization through evidence-informed functional medicine.
Every patient at The Functional MDs is evaluated by a board-certified physician.
The practice combines conventional medical training with systems-based functional medicine to deliver evidence-informed, personalized care focused on root-cause health optimization.
As part of his commitment to patient education, Dr Singh created the Ask Dr. Singh section, a growing library of physician-led answers to common health questions.
Each response is grounded in clinical experience and published medical literature, offering structured educational insights into complex health topics.
The goal is to help individuals better understand their health and make more informed decisions through evidence-informed education.
Functional medicine is not a replacement for conventional medical care.
The Functional MDs routinely collaborates with primary care physicians and medical specialists when appropriate.
The practice believes the best patient outcomes often come from collaboration between conventional and functional medicine approaches.
"Your body is always speaking: symptoms are just the language. The real question is, are we listening?"
The Functional MDs offer physician-led functional medicine care through secure telehealth, delivering the same root-cause, personalized approach as in-office care.
Indiana - Texas - Washington - Illinois - Pennsylvania - Ohio - Michigan - Kentucky
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Hormone Optimization (Thyroid, Adrenal & HRT)
Bioidentical hormone therapy for full-spectrum balance.
Mold, Heavy Metals, and Environmental Toxins
Treat hidden toxic exposures like mold and heavy metals.
The Functional MDs
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