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Clinical Pathologists (Laboratory Medicine) in Virginia

Data updated monthly · Last refresh October 2026

14 Clinical Pathology/Laboratory Medicine providers practice in Virginia. The largest concentration is in Richmond. 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.

14providers
Richmondtop city

Clinical Pathology/Laboratory Medicine by city in Virginia

Choose a city to see providers there.

Clinical Pathology/Laboratory Medicine in Richmond3 providers
Clinical Pathology/Laboratory Medicine in Falls Church2 providers
Clinical Pathology/Laboratory Medicine in Norfolk2 providers
Clinical Pathology/Laboratory Medicine in Manassas1 providers
Clinical Pathology/Laboratory Medicine in Salem1 providers
Clinical Pathology/Laboratory Medicine in Culpeper1 providers
Clinical Pathology/Laboratory Medicine in Charlottesville1 providers
Clinical Pathology/Laboratory Medicine in Fredericksburg1 providers
Clinical Pathology/Laboratory Medicine in Woodbridge1 providers
Clinical Pathology/Laboratory Medicine in Winchester1 providers

Where Clinical Pathologists (Laboratory Medicine) in Virginia practice

From CMS Medicare enrollment records covering 5 of the 14 providers listed here (36%). Providers who do not bill Medicare are not included in these figures.

Largest practice groups

Group (as registered with Medicare)Clinical Pathologists (Laboratory Medicine)All clinicians in groupMain city
Gastroenterology Associates of Northern Virginia, LLC398Manassas

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.

Clinical Pathology/Laboratory Medicine providers in Virginia

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. Pamela Clark, M.D.
Charlottesville, VA · No drug or device payments recorded (2025) · (434) 924-1946
Dr. Ralph Desimone, M.D.
Culpeper, VA · No drug or device payments recorded (2025) · (540) 829-4153
Dr. Lucia Pastore, MD
Falls Church, VA · No drug or device payments recorded (2025) · (703) 776-2746
Dr. Philip Branton, MD
Falls Church, VA · No drug or device payments recorded (2025) · (703) 776-3428
Dr. Margaret Gedde
Fredericksburg, VA · No drug or device payments recorded (2025) · (719) 239-0643
Dr. Claudine Morcos, M.D.
Manassas, VA · No drug or device payments recorded (2025) · (703) 365-2517
Dr. Hassan Tahhan, MD
Norfolk, VA · No drug or device payments recorded (2025) · (757) 388-3221
Dr. Lou Ann Maes
Norfolk, VA · No drug or device payments recorded (2025) · (757) 446-7746
Dr. Junqi Qian, MD
Richmond, VA · $260 in drug and device payments (2025) · (804) 330-9105
Dr. Marie Do, MD
Richmond, VA · No drug or device payments recorded (2025) · (804) 828-9783
Dr. Mary Padilla, M.D.
Richmond, VA · No drug or device payments recorded (2025) · (804) 287-1030
Dr. James Henry, MD
Salem, VA · $16 in drug and device payments (2025) · (540) 772-3547
Dr. Catherine Mathieu, M.D.
Winchester, VA · No drug or device payments recorded (2025) · (540) 536-8790
Dr. Jerome O'connell, M.D.
Woodbridge, VA · No drug or device payments recorded (2025) · (703) 670-1835

Common questions

How many Clinical Pathology/Laboratory Medicine providers are in Virginia?

There are 14 Clinical Pathology/Laboratory Medicine providers with active NPI records practicing in Virginia, according to federal NPPES data refreshed monthly.

Which cities in Virginia have the most Clinical Pathology/Laboratory Medicine providers?

Richmond (3), Falls Church (2), Norfolk (2) have the highest concentration of Clinical Pathology/Laboratory Medicine providers in Virginia.

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.

Related reading on HealthcareDiscovery.AI

Clinical Pathology/Laboratory Medicine in all 50 states Search all 14 in the directory Ask Zach for help choosing

Related

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 Clinical Pathology/Laboratory Medicine in Virginia? Get featured.