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 by the American Board of Surgery. 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 Kaiser Permanente, 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 in 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 Dr. Jen 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.
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
Also known as:
- Lipoma
- Benign Tumor
- Fatty tumor
- Fatty lump
- Benign fatty growth
- Adipose tumor
ICD-10 Codes:
- D179: Benign lipomatous neoplasm, unspecified
Also known as:
- Anal Fissure
- Anal Disorder
- Rectal Tear
- Fissure in Anus
- Perianal Fissure
ICD-10 Codes:
- K602: Anal fissure, unspecified
Also known as:
- Gallstones with Chronic Gallbladder Inflammation
- Bile Duct Disease
- Gallstones
- Chronic cholecystitis with gallstones
- Long-term gallbladder inflammation
ICD-10 Codes:
- K8010: Calculus of gallbladder with chronic cholecystitis without obstruction
Also known as:
- Acute Appendicitis
- Appendicitis
- Inflamed Appendix
- Sudden Appendix Inflammation
- Appendicitis Attack
ICD-10 Codes:
- K3580: Unspecified acute appendicitis
Also known as:
- Hemorrhoids
- Piles
- Anal veins
- Swollen rectal veins
ICD-10 Codes:
- K648: Other hemorrhoids
Which procedures does Dr. Jen perform as a Surgeon?
As a Surgeon, procedures performed by a Dr. Hanlon Jen may include:
- Abdominal Wall Reconstruction
- Amputation
- Appendicitis / Appendectomy
- Brain Aneurysm Treatment
- Brain Surgery
- Brain Tumor Evaluation
- Central Line Placement
- Cerebral Shunt
For detailed information, please contact Dr. Jen's office.
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
Alameda Alliance
All Other Third Party
Community Health Network
CVS Health (formerly Aetna)
Express Scripts
Kaiser Permanente
Medicare
Samaritan Health Services
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
What is Dr. Jen's NPI number?An 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. 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. Contact Dr. Jen to book an appointment today.
Is this Dr. Hanlon Jen affiliated with a ranked Castle Connolly Top Hospital?
No, 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
Where can I learn more about Surgeon?
Explore Surgeon with 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 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 Hanlon Jen?
Please contact Dr. Jen's office at (510) 248-3000 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Hanlon Jen have?
Dr. Hanlon Jen is certified by the American Board of Surgery.
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