Billy Lan
Experienced in Crohn's Disease

Dr. Billy Lan

General Surgery
Duke Regional Hospital Colorectal Surgery
407 Crutchfield St, 
Durham, NC 
Offers Telehealth

Experienced in Crohn's Disease
Duke Regional Hospital Colorectal Surgery
407 Crutchfield St, 
Durham, NC 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

I am a colorectal surgeon, which means that I am a surgeon of the abdomen. I treat patients with diseases related to the gastrointestinal tract, specifically with diverticulitis, inflammatory bowel disease, colitis, Crohn’s disease, ulcerative colitis, and also GI cancers, such as colon cancer, rectal cancer, and anal cancer. I try to engage with the patient as much as I can. I use as many visual things as possible, pictures or diagrams, to help explain conditions or treatments a little easier. The benefit of coming to Duke is that we have multiple specialties, so if a diagnosis is unclear to me, I have a team of colleagues who help me and patients can be comfortable knowing a team of specialists can help find a solution.

Dr. Lan is rated as an Experienced provider by MediFind in the treatment of Crohn's Disease. His top areas of expertise are Proctitis, Colorectal Cancer, Familial Colorectal Cancer, Bladder Reconstruction, and Ureteroscopy.

His clinical research consists of co-authoring 9 peer reviewed articles. MediFind looks at clinical research from the past 15 years.

Specialties
General Surgery
Licenses
Surgery in HI
Board Certifications
American Board Of Colon/Rectal Surgery, Colon & Rectal Surgery
American Board Of Surgery, General Surgery
Fellowships
Colorectal Surgery, Cleveland Clinic Foundation (Ohio)
Hospital Affiliations
Duke Regional Hospital
Duke University Hospital
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Ambetter
  • EPO
  • HMO
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Medicare
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE PART D
Piedmont
  • HMO
  • POS
TeamCare
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 8 Less Insurance Carriers -

Locations

Duke Regional Hospital Colorectal Surgery
407 Crutchfield St, Durham, NC 27704
Call: 919-660-2361
Other Locations
James E Davis Ambulatory Surg
120 E Carver St, Durham,, NC 27704
Call: 919-470-1000

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


9 Total Publications

ASO Visual Abstract: ctDNA as a Novel Prognostic Biomarker of Therapeutic Efficacy in Patients with Unresectable Colorectal Liver Metastases Treated with Hepatic Arterial Infusion.
ASO Visual Abstract: ctDNA as a Novel Prognostic Biomarker of Therapeutic Efficacy in Patients with Unresectable Colorectal Liver Metastases Treated with Hepatic Arterial Infusion.
Journal: Annals of surgical oncology
Published: July 22, 2025
View All 9 Publications
Similar Doctors
Karen Sherman
Advanced in Crohn's Disease
Dr. Karen Sherman
General Surgery
Advanced in Crohn's Disease
Dr. Karen Sherman
General Surgery

Duke University Health System Inc

3400 Wake Forest Rd, 
Raleigh, NC 
 (21.3 miles away)
919-485-1700
Experience:
18+ years
Languages Spoken:
English
See accepted insurances
Offers Telehealth

As a colorectal surgeon, I specialize in the surgical management of a wide array of problems involving the small intestine, colon, rectum, and anus. My patients may be dealing with cancer or a variety of benign diseases including diverticulitis, inflammatory bowel disease or anorectal problems. I utilize minimally invasive techniques including robotics, laparoscopy, endoscopy, and transanal surgery. My primary focus is on ensuring that patients receive high quality, compassionate care while optimizing patient outcomes. My research interests include improving patient outcomes after colorectal surgery and quality improvement. Dr. Sherman is rated as an Advanced provider by MediFind in the treatment of Crohn's Disease. Her top areas of expertise are Familial Colorectal Cancer, Colorectal Cancer, Crohn's Disease, Bladder Reconstruction, and Ureteroscopy.

Advanced in Crohn's Disease
Dr. Reza Rahbar
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Advanced in Crohn's Disease
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Raleigh, NC 
 (18.8 miles away)
919-784-7874
Languages Spoken:
English
See accepted insurances

Reza Rahbar is a General Surgeon in Raleigh, North Carolina. Dr. Rahbar is rated as an Advanced provider by MediFind in the treatment of Crohn's Disease. His top areas of expertise are Rectal Prolapse, Familial Colorectal Cancer, Encopresis, Hernia Surgery, and Bladder Reconstruction.

Experienced in Crohn's Disease
Dr. Sankar N. Adusumilli
General Surgery | Colorectal Surgery
Experienced in Crohn's Disease
Dr. Sankar N. Adusumilli
General Surgery | Colorectal Surgery

Carolina Colorectal Surgery, PC

2501 Atrium Dr, Suite 305, 
Raleigh, NC 
 (18.8 miles away)
919-235-0216
Languages Spoken:
English, Hindi, Telugu
See accepted insurances
Accepting New Patients
Offers Telehealth

Sankar Adusumilli is a General Surgeon and a Colorectal Surgeon in Raleigh, North Carolina. Dr. Adusumilli is rated as a Distinguished provider by MediFind in the treatment of Crohn's Disease. His top areas of expertise are Peritonitis, Secondary Peritonitis, Retroperitoneal Inflammation, Hemorrhoidectomy, and Bladder Reconstruction. Dr. Adusumilli is currently accepting new patients.

VIEW MORE CROHN'S DISEASE DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Lan's expertise for a condition
ConditionClose
    • Distinguished
    • Colorectal Cancer
      Dr. Lan is
      Distinguished
      . Learn about Colorectal Cancer.
      See more Colorectal Cancer experts
    • Familial Colorectal Cancer
      Dr. Lan is
      Distinguished
      . Learn about Familial Colorectal Cancer.
      See more Familial Colorectal Cancer experts
    • Proctitis
      Dr. Lan is
      Distinguished
      . Learn about Proctitis.
      See more Proctitis experts
    • Rectal Prolapse
      Dr. Lan is
      Distinguished
      . Learn about Rectal Prolapse.
      See more Rectal Prolapse experts
    • Advanced
    • Anal Cancer
      Dr. Lan is
      Advanced
      . Learn about Anal Cancer.
      See more Anal Cancer experts
    • Genital Warts
      Dr. Lan is
      Advanced
      . Learn about Genital Warts.
      See more Genital Warts experts
    • Experienced
    • Anal Fissure
      Dr. Lan is
      Experienced
      . Learn about Anal Fissure.
      See more Anal Fissure experts
    • Attenuated Familial Adenomatous Polyposis
      Dr. Lan is
      Experienced
      . Learn about Attenuated Familial Adenomatous Polyposis.
      See more Attenuated Familial Adenomatous Polyposis experts
    • Bile Duct Stricture
      Dr. Lan is
      Experienced
      . Learn about Bile Duct Stricture.
      See more Bile Duct Stricture experts
    • Bladder Reconstruction
      Dr. Lan is
      Experienced
      . Learn about Bladder Reconstruction.
      See more Bladder Reconstruction experts
    • Bowel Incontinence
      Dr. Lan is
      Experienced
      . Learn about Bowel Incontinence.
      See more Bowel Incontinence experts
    • Crohn's Disease
      Dr. Lan is
      Experienced
      . Learn about Crohn's Disease.
      See more Crohn's Disease experts
    View All 20 Experienced Conditions
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