Robert B Chao, M.D.
Internal Medicine · Rheumatology (CMS) · Tysons, VA
At a glance
8100 Boone Blvd Ste 700, Tysons, VA 22182-2683
NPPES record updated May 10, 2023. 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
8100 Boone Blvd Ste 700Tysons, VA 22182-2683
Additional reported practice locations
506 6Th StBrooklyn, NY 112153609
Phone: 2405156592 8501 Arlington Blvd Ste 340
Fairfax, VA 220314625
Phone: 7022599050
Fax: 7032599040 3300 Gallows Rd
Falls Church, VA 220423300
Phone: 7037764001
Fax: 7037767113 8501 Arlington Blvd Ste 340
Fairfax, VA 220314625
Phone: 7032599050
Fax: 7032599040
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2014
- CMS specialties
- Internal Medicine · Rheumatology
CMS reports telehealth services for this clinician. Confirm current services and availability with the practice.
Practice groups
Reported hospital affiliations
- Inova Alexandria Hospital Alexandria, VA
- Inova Fair Oaks Hospital Fairfax, VA
- Inova Fairfax Hospital Falls Church, VA
- Inova Mount Vernon Hospital Alexandria, 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.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
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.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
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 | $31.29 |
Reporting companies
| Company | Amount |
|---|---|
| BIOPROTECT MEDICAL, INC. | $31.29 |
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
- Internal Medicine · Rheumatology (CMS)
- Taxonomy code
- 207RR0500X
- Enumeration date
- Mar 20, 2014
- Record updated
- May 10, 2023
More registry details
- Provider type
- Individual · Type 1
- Other reported name
- ROBERT BO CHAO
- Reported credentials
- M.D.
Reported taxonomies and licenses
207RR0500X · Primary
License reported: 0101269638 VA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
8100 Boone Blvd Ste 700Tysons, VA 22182-2683
- Phone
- (571) 423-5699
- Fax
- (571) 423-5698
Mailing address
PO BOX 37174BALTIMORE, MD 212973174
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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