William Young Park, MD
Gastroenterology (CMS) · Washington, DC
At a glance
1133 21St St Nw Building 2, Washington, DC 20036-3390
Published activity: Colonoscopy · Upper gastrointestinal (GI) endoscopy for acid reflux. View counts and coverage
NPPES record updated Aug 7, 2025. 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
1133 21St St Nw Building 2 5Th FloorWashington, DC 20036-3390
Additional reported practice locations
811 Massachusetts AveBoston, MA 021182605
Phone: 6174456400 593 Eddy St Ste 240
Providence, RI 029034923
Phone: 4014445034
Education & affiliations
- Medical / professional school
- Drexel University College Of Medicine
- Graduation year
- 2019
- CMS specialties
- Gastroenterology
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- Medstar Georgetown University Hospital Washington, DC
- Medstar Montgomery Medical Center Olney, MD
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 | 1-10 |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 26 |
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 | $191.04 |
Reporting companies
| Company | Amount |
|---|---|
| AIMMUNE THERAPEUTICS, INC. | $121.60 |
| GENZYME CORPORATION | $32.89 |
| NOVO NORDISK INC | $20.05 |
| SALIX PHARMACEUTICALS, A DIVISION OF BAUSCH HEALTH US, LLC | $16.50 |
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 (CMS)
- Taxonomy code
- 207RG0100X
- Enumeration date
- Mar 16, 2019
- Record updated
- Aug 7, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
390200000X
License reported: 280221 MA
390200000X
207RG0100X · Primary
License reported: D0103627 MD
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
1133 21St St Nw Building 25Th Floor
Washington, DC 20036-3390
- Phone
- (202) 416-2000
Mailing address
593 EDDY ST STE 240PROVIDENCE, RI 029034923
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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