Brian Byungjin Park, M.D.
Gastroenterology · Internal Medicine (CMS) · Gainesville, VA
At a glance
7915 Lake Manassas Dr Ste 302, Gainesville, VA 20155-3260
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Feb 13, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
7915 Lake Manassas Dr Ste 302Gainesville, VA 20155-3260
Additional reported practice locations
170 W Shirley Ave Ste 205Warrenton, VA 201863083
Phone: 5403472470 24430 Stone Springs Blvd Ste 250
Dulles, VA 201662268
Phone: 5712480653 8640 Sudley Rd Ste 201
Manassas, VA 201104404
Phone: 7033686819
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2012
- CMS specialties
- Gastroenterology · Internal Medicine
Practice groups
Reported hospital affiliations
- Fauquier Hospital Warrenton, VA
- Uva Health Culpeper Medical Center Culpeper, VA
- Uva Health Haymarket Medical Center Haymarket, VA
- Uva Health Prince William Medical Center Manassas, VA
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Colonoscopy | 81 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 84 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $326.74 |
Reporting companies
| Company | Amount |
|---|---|
| MADRIGAL PHARMACEUTICALS | $69.13 |
| PFIZER INC. | $57.41 |
| SALIX PHARMACEUTICALS, A DIVISION OF BAUSCH HEALTH US, LLC | $56.46 |
| ABBVIE INC. | $53.75 |
| LILLY USA, LLC | $25.95 |
| GENZYME CORPORATION | $25.00 |
| ARDELYX, INC. | $21.69 |
| AZURITY PHARMACEUTICALS, INC. | $17.35 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Gastroenterology · Internal Medicine (CMS)
- Taxonomy code
- 207RG0100X
- Enumeration date
- Jun 20, 2012
- Record updated
- Feb 13, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RG0100X · Primary
License reported: 0101255026 VA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
7915 Lake Manassas Dr Ste 302Gainesville, VA 20155-3260
- Phone
- (571) 248-0653
- Fax
- (571) 248-0658
Mailing address
PO BOX 381468GERMANTOWN, TN 381831468
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
Report a directory issue