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Dr. John Pfeifer, MD

Molecular Genetic Pathologist

,

Anatomic Pathologist

,

Clinical Pathologist

Saint Louis, MO

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Pfeifer, Molecular Genetic Pathologist in Saint Louis, MO?

    Dr. John Pfeifer, MD is a Molecular Genetic Pathologist, who primarily practices in Saint Louis, MO with 2 additional practice locations. He is board certified. Dr. Pfeifer completed his residency at Barnes-Jewish Hosp-S Campus, Anatomic And Clinical Pathology. Dr. Pfeifer is fluent in English, and is currently seeing new patients. Dr. Pfeifer’s practice accepts Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Pfeifer’s office at (314) 362-5641.

    What are Areas of Expertise for Dr. Pfeifer?

    Dr. John Pfeifer, MD is a highly-rated, board-certified Molecular Genetic Pathologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Pfeifer empowers patients to confidently navigate their health journey, specializing in Gynecologic Pathology, Molecular Genetic Pathology, Surgical Pathology, and comprehensive wellness support. Serving the Saint Louis, MO community, Dr. Pfeifer is dedicated to enhancing lives through expert, patient-centered care.

    Where did Dr. Pfeifer go to medical school and complete their residency?

    • Residency: Barnes-Jewish Hosp-S Campus, Anatomic And Clinical Pathology | Barnes Hosp/Wash U Sch Med

    • Medical School: University of Ca, San Diego, Sch of Med, La Jolla Ca

    Is Dr. Pfeifer board certified as a Molecular Genetic Pathologist?

    Yes, Dr. John Pfeifer, MD is board certified by the American Board of Pathology

    What languages does Dr. Pfeifer speak?

    Dr. Pfeifer and their clinical team can communicate with patients in the following languages:

    • English

    What conditions does a Molecular Genetic Pathologist like Dr. Pfeifer typically treat?

    As a Molecular Genetic Pathologist, Dr. Pfeifer diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Pfeifer. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.

    Also known as:

    • Sterilization Procedure
    • Tubal Ligation
    • Vasectomy
    • Permanent contraception
    • Tubal ligation
    • Surgical birth control

    ICD-10 Codes:

    • Z302: Encounter for sterilization

    Also known as:

    • Uterine Polyp
    • Other Uterine Disorder
    • Uterine Disease
    • Endometrial Polyp
    • Womb Polyp
    • Non-inflammatory Uterine Conditions
    • Uterine Problems
    • Uterine Health Issues

    ICD-10 Codes:

    • N840: Polyp of corpus uteri
    • N858: Other specified noninflammatory disorders of uterus

    Also known as:

    • Endometrial Cancer
    • Uterine Cancer
    • Endometrial Cancer Treatment (PDQ®)
    • Malignant Endometrial Tumor
    • Endometrial Carcinoma
    • Cancer of the Endometrium

    ICD-10 Codes:

    • C541: Malignant neoplasm of endometrium

    Also known as:

    • Uterine Fibroids
    • Leiomyoma
    • Fibromyoma
    • Myoma
    • Uterine growth

    ICD-10 Codes:

    • D259: Leiomyoma of uterus, unspecified

    What procedures does a Molecular Genetic Pathologist like Dr. Pfeifer typically perform?

    As a Molecular Genetic Pathologist, procedures performed by Dr. John Pfeifer may include:

    Please contact Dr. Pfeifer's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.

    Does Dr. Pfeifer accept my insurance?

    Dr. Pfeifer accepts most major insurance plans. Important: Please call our office at (314) 362-5641 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Pfeifer accept in Saint Louis, MO?

    Dr. Pfeifer in Saint Louis, MO accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Aetna

    • Cigna

    • CMS

    • Corporate Services

    • Oscar

    • Other Health Care Provider

    • Oxford Health Plans

    • State of Illinois

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Pfeifer's office located?

    8118 Washington University Dept Of Pathology

    1 Barnes Jew Hosp Plz

    Saint Louis, MO 63110

    (314) 362-5641

    Get Directions

    Dr. John Pfeifer's Practice 2

    4320 Forest Park Ave

    Saint Louis, MO 63108

    Get Directions

    Dr. John Pfeifer's Practice 3

    4500 Memorial Dr

    Belleville, IL 62226

    Get Directions

    What is Dr. Pfeifer's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Pfeifer's National Provider Identifier (NPI) number is 1306864822.

    What common questions do patients ask about Dr. Pfeifer?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Pfeifer

    What is Dr. John Pfeifer's specialty?

    Dr. Pfeifer is a Molecular Genetic Pathologist near Saint Louis, MO.

    What does a Molecular Genetic Pathologist do?

    A Pathologist specializing in molecular genetic pathology focuses on the principles and technologies of molecular biology and genetics. This expertise is applied to diagnose or confirm Mendelian genetic disorders, developmental disorders, infectious diseases, and cancers, as well as to assess the progression of these conditions. They analyze gene structure, function, and mutations, utilizing various laboratory techniques to support the diagnosis, treatment, and prognosis of individuals with related disorders.

    Is this Dr. John Pfeifer affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Pfeifer is affiliated with Barnes-Jewish Hospital which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    When to see a Molecular Genetic Pathologist?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Molecular Genetic Pathologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is John Pfeifer accepting new patients in Saint Louis, MO?

    Yes, Dr. John Pfeifer is accepting new patients at this time.

    Does Dr. John Pfeifer offer online booking?

    Please contact Dr. Pfeifer's office at (314) 362-5641 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Pfeifer?

    Please contact Dr. Pfeifer's office at (314) 362-5641 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. John Pfeifer have?

    Dr. John Pfeifer is certified by the American Board of Pathology.

    <section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>