Dr. Sergei Frenzel has 30 years of clinical experience in Naturopathic and Conventional medicine. Dr. Frenzel is a licensed Naturopathic Physician in Connecticut, California, and Washington D.C. Dr. Frenzel's extensive holistic experience spans several countries and continents. If you are looking for treatment that is tailored your individual needs with natural and scientifically based approach call Dr. Frenzel.

Highlights, Specialties & Features

  • 30 years of experience in Naturorpathic and conventional medicine
  • Well visits and check ups
  • Allergies, Asthma
  • Diabetes, Thyroid problems
  • Digestive problems
  • Chronic conditions such as Arthritis
  • Weight management
  • Anti-Aging
  • Cardiovascular disease
  • Cancer and complementary therapy for cancer patients
  • Men's health: BPH, Prostate cancer, ED, etc.
  • Children's health
  • Mental health: mood disorders, ADHD/ADD, sleep and memory problems

Professional Associations & Certifications

  • Licensed Naturopathic Physician in the States of Connecticut and California, and in Washington, DC

Serviced Areas

  • Fairfiled County, New Haven County

Payment Options

  • Debit Cards, Financing Available, MasterCard, Money Orders, PayPal, Personal Checks, VISA

Contact Details

  Person Sergei Frenzel ND., MD
  City Stratford, CT
  Zip Code 06615
  Address 2184 Main street
  Phone Number (203) 378-9002

Business Representative

Sergei Frenzel ND., MD


Dr. Frenzel began his career as a traditionally trained allopathic physician in Kharkov, Ukraine. He graduated from Kharkov State Medical University with a Medical Doctorate degree and a specialty in pediatrics. Dr. Frenzel received post doctorate education and completed residency training in Acupuncture, Psychiatry, and Internal Medicine. Dr. Frenzel practiced as licensed physician in Ukraine and Israel in the specialties of Acupuncture, Pediatrics, Psychiatry, and Emergency Room Medicine. Once in the United States, Dr. Frenzel confirmed his MD training by obtaining an ECFMG Certification.

Products & Services

Nutritional medicine

Nutritional medicine

Illnesses such as diabetes, cardiovascular disease, hypertension, cancer, and gastrointestinal problems develop as a consequence of the food we choose. By changing our diet and adopting a healthy lifestyle, we can often change or reverse the course of an illness and restore health. Naturopathic doctors are trained in assessing nutritional status and recommending dietary changes and vitamin and mineral supplementation.

Botanical medicine

Botanical medicine

Current scientific studies have validated the use of many plants as medicines. Today, 80% of the world's population uses plants to treat illness. Plants are used medicinally because they do not have high toxicity, accumulate in the body, or cause addiction or withdrawal symptoms. Herbs are used to enhance immune function; improve digestion; normalize bodily functions; destroy bacteria, viruses, and fungi; soothe irritated tissues; calm nerves; and relax muscles. Examples of botanical treatments are teas, poultices, and tinctures.



As part of traditional Chinese medicine (TCM) , acupuncture aims to restore and maintain health through the stimulation of specific points on the body. In the United States, where practitioners incorporate healing traditions from China, Japan, Korea, and other countries, acupuncture is considered part of complementary and alternative medicine (CAM) .

Customer Testimonials

Dr Frenzel shows extraordinary competence and passion for natural medicines. From his previous medical background he understands true medical and surgical issues as well as the need for patients to be proactive in their lifestyles. He is an experienced naturopathic physician who offers solid guidance in prevention and treatment of acute and chronic illness.