HealthcareDiscovery.AI / Doctors / Maryland / Colon & Rectal Surgery

Colorectal Surgeons in Maryland

Data updated monthly · Last refresh October 2026

32 Colon & Rectal Surgery providers practice in Maryland, including 7 (22%) offering telehealth. The largest concentration is in Baltimore. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.

32providers
7telehealth
Baltimoretop city

Colon & Rectal Surgery by city in Maryland

Choose a city to see providers there.

Colon & Rectal Surgery in Baltimore11 providers
Colon & Rectal Surgery in Bethesda7 providers
Colon & Rectal Surgery in Towson4 providers
Colon & Rectal Surgery in Owings Mills1 providers
Colon & Rectal Surgery in Columbia1 providers
Colon & Rectal Surgery in Frederick1 providers
Colon & Rectal Surgery in Glen Burnie1 providers
Colon & Rectal Surgery in Chevy Chase1 providers
Colon & Rectal Surgery in Ellicott City1 providers
Colon & Rectal Surgery in Annapolis1 providers
Colon & Rectal Surgery in Rockville1 providers
Colon & Rectal Surgery in Silver Spring1 providers
Colon & Rectal Surgery in Oakland1 providers

Where Colorectal Surgeons in Maryland practice

From CMS Medicare enrollment records covering 18 of the 32 providers listed here (56%). Providers who do not bill Medicare are not included in these figures.

28%solo or small practice (under 10 clinicians)
6%mid-size group (10 to 99)
67%large group or health system (100+)

Largest practice groups

Group (as registered with Medicare)Colorectal SurgeonsAll clinicians in groupMain city
Medstar Medical Group II LLC23,726Baltimore
Greater Baltimore Medical Center2350Baltamore
University of Maryland St Joseph Medical Group LLC2288Towson
St Agnes Healthcare Inc.2265Baltimore
Colon Rectal Surgical Associates, LLC22Ellicott City

Hospitals where they hold privileges

HospitalCityOwnershipCMS star ratingColorectal Surgeons affiliated
Medstar Franklin Square Medical CenterRosedaleNonprofit3 of 52
Saint Agnes HospitalBaltimoreNonprofit3 of 52
Greater Baltimore Medical CenterBaltimoreNonprofit5 of 52
Suburban HospitalBethesdaNonprofit4 of 52
Adventist Healthcare Shady Grove Medical CenterRockvilleNonprofit2 of 52

Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.

Colon & Rectal Surgery providers in Maryland

Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.

Dr. Steven Proshan, MD
Annapolis, MD · $35 in drug and device payments (2025) · (410) 573-1699
Dr. Bashar Safar, MD
Baltimore, MD · $21 in drug and device payments (2025) · Telehealth · (410) 955-7323
Dr. Chady Atallah, M.D.
Baltimore, MD · $78 in drug and device payments (2025) · Telehealth · (410) 955-5020
Dr. David Lisle, M.D.
Baltimore, MD · $199 in drug and device payments (2025) · Telehealth · (202) 436-6139
Dr. Debra Vachon, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 783-5800
Dr. Evan Buckingham, M.D.
Baltimore, MD · $125 in drug and device payments (2025) · (410) 328-5878
Dr. Irina Bernescu, MD
Baltimore, MD · $10,410 in drug and device payments (2025) · (443) 574-8500
Dr. Joann Warrick, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 550-0886
Dr. Joshua Wolf
Baltimore, MD · $1,311 in drug and device payments (2025) · Telehealth · (410) 601-0601
Dr. Kathryn Chu, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · (410) 502-5717
Dr. Philip Ferris, M.D.
Baltimore, MD · No drug or device payments recorded (2025) · Telehealth · (443) 777-6225
Dr. Wei Liu
Baltimore, MD · $272 in drug and device payments (2025) · (410) 554-2782
Dr. Ada Graham, M.D.
Bethesda, MD · No drug or device payments recorded (2025) · Telehealth · (301) 896-6700
Dr. Allen Wolland, M.D.
Bethesda, MD · No drug or device payments recorded (2025) · (301) 896-6880
Dr. Benjamin Quartey, M.D.
Bethesda, MD · No drug or device payments recorded (2025) · (301) 295-4442
Dr. Elyse Leevan, M.D.
Bethesda, MD · No drug or device payments recorded (2025) · (301) 295-4442
Dr. James Duncan, M.D.
Bethesda, MD · No drug or device payments recorded (2025) · (301) 295-4603
Dr. Mary Teresa O'donnell, M.D.
Bethesda, MD · No drug or device payments recorded (2025) · (013) 295-2420
Dr. Vivek Patil, M.D.
Bethesda, MD · $135 in drug and device payments (2025) · (301) 897-8650
Dr. Bindu Umapathi, M.D,MRCS,FACS,FASCRS
Chevy Chase, MD · $66 in drug and device payments (2025) · Telehealth · (240) 737-0085
Dr. Justin Somerville, M.D.
Columbia, MD · $17 in drug and device payments (2025) · (410) 695-9950
Dr. James Zalucki, M.D.
Ellicott City, MD · $741 in drug and device payments (2025) · (410) 730-1712
Dr. Vernissia Tam, MD
Frederick, MD · $166 in drug and device payments (2025) · (240) 575-2526
Dr. Vincent Cifello, M.D.
Glen Burnie, MD · $17 in drug and device payments (2025) · (410) 760-9996
Dr. Lynda Dougherty, M.D.
Oakland, MD · No drug or device payments recorded (2025) · (301) 334-4340
Dr. Howard Berg, M.D.
Owings Mills, MD · No drug or device payments recorded (2025) · (410) 363-6664
Dr. Bradley Bennett, M.D.
Rockville, MD · No drug or device payments recorded (2025) · (301) 681-6437
Dr. Matthew Skancke, M.D.
Silver Spring, MD · $260 in drug and device payments (2025) · (301) 754-7000
Dr. Hyungchul Kim, MD
Towson, MD · No drug or device payments recorded (2025) · (410) 583-1313
Dr. Ivane Chua, MD
Towson, MD · $1,392 in drug and device payments (2025) · (410) 427-2588
Dr. Joseph Dirocco, M.D.
Towson, MD · $713 in drug and device payments (2025) · (443) 849-3130
Dr. Valerie Cabrera Leon, MD
Towson, MD · $1,109 in drug and device payments (2025) · (443) 849-6910

Common questions

How many Colon & Rectal Surgery providers are in Maryland?

There are 32 Colon & Rectal Surgery providers with active NPI records practicing in Maryland, according to federal NPPES data refreshed monthly.

Do Colon & Rectal Surgery providers in Maryland offer telehealth?

Yes. 7 of the 32 Colon & Rectal Surgery providers in Maryland (about 22%) report offering telehealth services in CMS data.

Which cities in Maryland have the most Colon & Rectal Surgery providers?

Baltimore (11), Bethesda (7), Towson (4) have the highest concentration of Colon & Rectal Surgery providers in Maryland.

How many Colon & Rectal Surgery providers in Maryland received drug or device company payments?

18 of 32 Colon & Rectal Surgery providers in Maryland (56%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.

Where does this data come from?

Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

Do most Colorectal Surgeons in Maryland work in independent practices or large health systems?

Among 18 Colorectal Surgeons in Maryland enrolled in Medicare, 28% bill through a solo or small practice with fewer than 10 clinicians, 6% through a mid-size group of 10 to 99, and 67% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.

Which hospitals do Colorectal Surgeons in Maryland work at?

According to CMS facility affiliation records, the Maryland hospitals where the most Colorectal Surgeons hold privileges are Medstar Franklin Square Medical Center in Rosedale; Saint Agnes Hospital in Baltimore; Greater Baltimore Medical Center in Baltimore.

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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory. Are you a Colon & Rectal Surgery in Maryland? Get featured.