Dr. Nacchal NachiappanMD

Internal Medicine

at Build Health MD — Phoenix, AZ

About

Dr. Nacchal Nachiappan is a board-eligible internal medicine physician who has practiced since 2010. She earned her undergraduate degree at Cornell University and her medical degree at SUNY Upstate Medical University. She completed her residency training at UC Irvine. Dr. Nachiappan holds membership in the Alpha Omega Alpha Medical Honor Society, one of medicine's most selective honors. She has served on faculty at both Mayo Clinic Alix School of Medicine and the University of Arizona College of Medicine Phoenix, earning teaching awards at each institution.

Her clinical background spans hospital medicine, primary care, telehealth for remote clinics, and medication-assisted treatment for opioid use disorder. Dr. Nachiappan also trained in auricular acupuncture and complementary therapies, which she incorporates into her whole health approach. She treats patients as young as 15 and holds a particular focus on preventive medicine, chronic disease management, and functional health. Her philosophy centers on spending real time with patients, identifying root causes, and building health habits that last a lifetime.

Education & Training

Undergraduate

Cornell University

Medical School

SUNY Upstate Medical University

Residency

UC Irvine

Additional Training

Faculty at Mayo Clinic Alix School of Medicine and University of Arizona – College of Medicine Phoenix; Alpha Omega Alpha Medical Honor Society; whole health training including auricular acupuncture and complementary therapies

Conditions Treated

chronic disease management
opioid use disorder
cardiovascular disease
obesity
hypertension
diabetes

Who is Dr. Nachiappan right for?

Dr. Nachiappan works well with adults who want a physician focused on prevention and long-term health building. Patients managing chronic conditions like diabetes, hypertension, obesity, or cardiovascular disease benefit from her root-cause approach. She also serves patients seeking medication-assisted treatment for opioid use disorder. Adults who want a physician to coordinate specialist care and advocate for them during hospitalizations find her practice a strong fit. She sees patients as young as 15, including young adults navigating health for the first time.

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Frequently Asked Questions

Dr. Nachiappan treats a broad range of conditions, including hypertension, diabetes, obesity, and cardiovascular disease. She also manages chronic disease through preventive and functional medicine approaches. Additionally, she provides medication-assisted treatment for opioid use disorder.

Dr. Nachiappan is an internal medicine physician who trained at UC Irvine and has practiced since 2010. She holds membership in the Alpha Omega Alpha Medical Honor Society, which recognizes outstanding academic and clinical achievement in medicine.

Dr. Nachiappan completed her undergraduate education at Cornell University and earned her medical degree from SUNY Upstate Medical University. She then completed her residency at UC Irvine. After residency, she served on faculty at Mayo Clinic Alix School of Medicine and the University of Arizona College of Medicine Phoenix.

Yes. Dr. Nachiappan trained in auricular acupuncture and complementary therapies, and she incorporates these into her whole health approach. She draws on both allopathic and integrative methods to address each patient's full picture.

Dr. Nachiappan specializes in general adult internal medicine. She starts seeing patients as young as 15 years old. Her practice primarily serves adolescents and adults.

Dr. Nachiappan begins every patient relationship with a comprehensive physical and a wide range of health metrics. She uses those measurements to identify root causes and set personalized goals. From there, she works with patients to build lasting lifestyle habits that reduce disease risk over time.

Yes. Dr. Nachiappan actively coordinates specialist referrals and advocates for patients during hospitalizations. Patients describe her approach as proactive, with a focus on ensuring nothing falls through the cracks in complex care situations.

Yes. Dr. Nachiappan received teaching awards during her time on faculty at both Mayo Clinic Alix School of Medicine and the University of Arizona College of Medicine Phoenix. She brings that same educational clarity to her patient conversations at Build Health MD.

Doctor profile last updated April 10, 2026