Overview
John Marks is a Colorectal Surgeon in Wynewood, Pennsylvania. Dr. Marks is highly rated in 15 conditions, according to our data. His top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Lynch Syndrome, Ileostomy, and Colostomy.
His clinical research consists of co-authoring 61 peer reviewed articles and participating in 2 clinical trials. MediFind looks at clinical research from the past 15 years.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- MEDICARE PDP
- HMO
- POS
- EPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- OTHER MEDICARE PART D
- PPO
- HMO
- POS
- PPO
- EPO
- HMO
- PPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE SNP
- EPO
- HMO
- PPO
- EPO
- POS
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- POS
- PPO
- OTHER MANAGED MEDICAID
- OTHER MEDICAID
- STATE MEDICAID
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- INSURANCE PLAN
- MEDICARE MAPD
- OTHER COMMERCIAL
- PPO
- OTHER COMMERCIAL
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- MEDICARE-MEDICAID PLAN
- OTHER MEDICARE
- OTHER MEDICARE PART D
Locations
100 E Lancaster Ave, Wynewood, PA 19096
830 Old Lancaster Rd, Bryn Mawr, PA 19010
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.
2 Clinical Trials
Penn Colon And Rectal Surgery Perelman
Najjia Mahmoud is a Colorectal Surgeon in Philadelphia, Pennsylvania. Dr. Mahmoud is highly rated in 24 conditions, according to our data. Her top areas of expertise are Colorectal Cancer, Diverticular Disease, Familial Colorectal Cancer, Ileostomy, and Hernia Surgery. Dr. Mahmoud is currently accepting new patients.
Penn Colon And Rectal Surgery Washington Square
Joshua Bleier is a Colorectal Surgeon in Philadelphia, Pennsylvania. Dr. Bleier is highly rated in 21 conditions, according to our data. His top areas of expertise are Bowel Incontinence, Rectal Prolapse, Encopresis, Colostomy, and Ileostomy. Dr. Bleier is currently accepting new patients.
Main Line Healthcare
Henry Schoonyoung is a Colorectal Surgeon in Bryn Mawr, Pennsylvania. Dr. Schoonyoung is highly rated in 16 conditions, according to our data. His top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Crohn's Disease, Colostomy, and Hernia Surgery.
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
- Elite
- Colorectal CancerDr. Marks isElite. Learn about Colorectal Cancer.
- Distinguished
- ColostomyDr. Marks isDistinguished. Learn about Colostomy.
- Diverticular DiseaseDr. Marks isDistinguished. Learn about Diverticular Disease.
- EndoscopyDr. Marks isDistinguished. Learn about Endoscopy.
- Familial Colorectal CancerDr. Marks isDistinguished. Learn about Familial Colorectal Cancer.
- IleostomyDr. Marks isDistinguished. Learn about Ileostomy.
- Lynch SyndromeDr. Marks isDistinguished. Learn about Lynch Syndrome.
- Advanced
- Anal CancerDr. Marks isAdvanced. Learn about Anal Cancer.
- Bladder ReconstructionDr. Marks isAdvanced. Learn about Bladder Reconstruction.
- Bowel IncontinenceDr. Marks isAdvanced. Learn about Bowel Incontinence.
- Gastroesophageal Junction Cancer
- Hernia SurgeryDr. Marks isAdvanced. Learn about Hernia Surgery.
- ProctitisDr. Marks isAdvanced. Learn about Proctitis.
- Experienced
- ALK-Positive Non-Small Cell Lung Cancer
- Anorectal AbscessDr. Marks isExperienced. Learn about Anorectal Abscess.
- Atrial TachycardiaDr. Marks isExperienced. Learn about Atrial Tachycardia.
- Atrioventricular Nodal Reentrant Tachycardia (AVNRT)
- ColitisDr. Marks isExperienced. Learn about Colitis.
- ColonoscopyDr. Marks isExperienced. Learn about Colonoscopy.