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Dr. Hanlon Jen, MD

Dr. Hanlon Jen, MD

Surgeon

Fremont, CA

23 Years of Experience

Accepting patients

    Who is Dr. Jen, Surgeon in Fremont, CA?

    Dr. Hanlon Jen, MD is a Surgeon, who primarily practices in Fremont, CA. He has been practicing for over 23 years and is board certified. Dr. Jen graduated from Pacific State Medical University and completed his residency at San Joaquin Gen Hosp, General Surgery. Dr. Jen is fluent in English, and is currently seeing new patients. Dr. Jen’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Jen’s office at (510) 248-3000.

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

    • Residency: San Joaquin Gen Hosp, General Surgery | Uc Davis | San Joaquin General Hospital

    • Medical School: Pacific State Medical University | University of Chicago Division of the Biological Sciences The Pritzker School of Medicine

    Is Dr. Jen board certified as a Surgeon?

    Yes, Dr. Hanlon Jen, MD is board certified by the American Board of Surgery

    What languages does Dr. Jen speak?

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

    • English

    What conditions does a Surgeon like Dr. Jen typically treat?

    As a Surgeon, Dr. Jen 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. Jen. 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.

    Also known as:

    • Follow-up After Treatment (Non-Cancer)
    • Post-Treatment Check-up
    • Aftercare Visit
    • Recovery Monitoring Exam

    ICD-10 Codes:

    • Z09: Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

    Also known as:

    • Umbilical Hernia
    • Groin Hernia (One Side)
    • Ventral Hernia
    • Hernia
    • Inguinal Hernia
    • Belly Button Hernia
    • Navel Hernia
    • Umbilical Rupture
    • Unilateral Inguinal Hernia
    • Single Groin Hernia
    • Hernia in One Groin
    • Abdominal Wall Hernia
    • Epigastric Hernia
    • Spigelian Hernia

    ICD-10 Codes:

    • K429: Umbilical hernia without obstruction or gangrene
    • K4090: Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent
    • K439: Ventral hernia without obstruction or gangrene

    Also known as:

    • Gallstones
    • Cholelithiasis
    • Gallbladder stones
    • Biliary calculi

    ICD-10 Codes:

    • K8020: Calculus of gallbladder without cholecystitis without obstruction

    What procedures does a Surgeon like Dr. Jen typically perform?

    As a Surgeon, Dr. Jen performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Jen. 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.

    Also known as:

    • Laparoscopic Gallbladder Removal
    • Keyhole Gallbladder Surgery
    • Cholecystectomy Laparoscopic
    • Minimally Invasive Gallbladder Surgery

    CPT Codes:

    • 47562: Laparoscopy, surgical; cholecystectomy

    Also known as:

    • Small Abdominal Hernia Repair
    • Ventral hernia repair
    • Umbilical hernia surgery
    • Epigastric hernia repair with mesh
    • Incisional hernia repair

    CPT Codes:

    • 49591: Repair of anterior abdominal hernia(s) (ie, epigastric, incisional, ventral, umbilical, spigelian), any approach (ie, open, laparoscopic, robotic), initial, including implantation of mesh or other prosthesis when performed, total length of defect(s); less than 3 cm, reducible

    Does Dr. Jen accept my insurance?

    Dr. Jen accepts most major insurance plans. Important: Please call our office at (510) 248-3000 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Jen accept in Fremont, CA?

    Dr. Jen in Fremont, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Community Health Network of Washington

    • Medicare

    • Samaritan Health Services

    • State of California

    View All Insurances

    Where is Dr. Jen's office located?

    Dr. Hanlon Jen's Primary Practice

    39400 Paseo Padre Pkwy

    Fremont, CA 94538

    (510) 248-3000

    Get Directions

    What hospitals are Dr. Jen affiliated with?

    Dr. Jen has admitting privileges at the following hospitals:

    Fremont Medical Center,Fremont, CA

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

    Dr. Jen's National Provider Identifier (NPI) number is 1891870556.

    What common questions do patients ask about Dr. Jen?

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

    What is Dr. Hanlon Jen's specialty?

    Dr. Jen is a Surgeon near Fremont, CA.

    What does a Surgeon do?

    General surgeons are experts in diagnosing and managing surgical conditions which includes preoperative, operative, and postoperative care, as well as addressing complications. Their expertise include the areas such as the alimentary tract, breast, abdomen, skin and soft tissue, endocrine system, head and neck, pediatric surgery, surgical critical care, surgical oncology, trauma, burns, and vascular surgery. General surgeons increasingly utilize minimally invasive and endoscopic techniques to provide proper care. In addition to this, many general surgeons have expertise in transplantation, plastic, and cardiothoracic surgery.

    Is Dr. Hanlon Jen affiliated with a ranked Castle Connolly Top Hospital?

    No, Dr. Jen is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Fremont Medical Center. Castle Connolly Top Hospitals 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 Surgeon?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Surgeon. 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 Dr. Hanlon Jen accepting new patients in Fremont, CA?

    Yes, Dr. Hanlon Jen is accepting new patients at this time.

    Does Dr. Hanlon Jen offer online booking?

    Please contact Dr. Jen's office at (510) 248-3000 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Dr. Hanlon Jen?

    Please contact Dr. Jen's office at (510) 248-3000 to schedule an appointment.

    Where is Dr. Jen's office located?

    Dr. Jen's office is located in Fremont, CA.

    Which board certifications does Dr. Hanlon Jen have?

    Dr. Hanlon Jen is certified by the American Board of Surgery.