Doctor profile · Federal record
Dr. Robert Chao, M.D.
Rheumatology Physician (CMS: Rheumatology) · Tysons, VA
- NPI 1033536735
- Accepts Medicare
- 12 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 4 locations .
- Primary practice
-
8100 Boone Blvd Ste 700
Tysons, VA 221822683
(571) 423-5699
fax (571) 423-5698 - Additional location
-
3300 Gallows RD
Falls Church, VA 220423300
(703) 776-4001
fax (703) 776-7113 - Additional location
-
8501 Arlington Blvd Ste 340
Fairfax, VA 220314625
(702) 259-9050
fax (703) 259-9040 - Additional location
-
506 6Th St
Brooklyn, NY 112153609
(240) 515-6592 - Mailing address
-
Po Box 37174
Baltimore, MD 212973174
Show 1 more location
Credentials & registration
- NPI registered
- March 2014 — 12 yrs on file
- Profile last updated
- May 10, 2023
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- Virginia #0101269638
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1033536735. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
323
Distinct HCPCS
4
Medicare allowed
$48,970
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 168 | 99 | $143 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 91 | 91 | $185 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 48 | 45 | $101 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 16 | 15 | $203 |
In context: peer comparison
Among 2 peers in Tysons Rheumatology Physician, average services per provider: 221. This provider delivers 1.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
493
Patients
92
Total drug cost
$262,003
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydroxychloroquine Sulfate | Generic | 152 | 35 | $9,217 |
| Prednisone | Generic | 84 | 28 | $1,017 |
| Methotrexate (Methotrexate Sodium) | Brand | 72 | 16 | $2,869 |
| Allopurinol | Generic | 31 | 0 | $782 |
| Alendronate Sodium | Generic | 25 | 0 | $277 |
| Leflunomide | Generic | 23 | 0 | $1,807 |
| Meloxicam | Generic | 19 | 13 | $74 |
| Simponi (Golimumab) | Brand | 14 | 0 | $91,551 |
| Actemra (Tocilizumab) | Brand | 13 | 0 | $59,963 |
| Folic Acid | Generic | 13 | 0 | $101 |
Hospital affiliations
Frequently asked questions
What is Dr. Robert Chao's medical specialty?
Dr. Robert Chao practices Rheumatology Physician in Tysons, VA.
Where does Dr. Robert Chao practice?
Dr. Robert Chao practices at 8100 Boone Blvd Ste 700, Tysons, VA 221822683. Office phone: 5714235699.
What is Dr. Robert Chao's NPI?
Dr. Robert Chao's National Provider Identifier (NPI) is 1033536735, issued by NPPES.
Does Dr. Robert Chao accept Medicare assignment?
Yes. Dr. Robert Chao accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Robert Chao commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.