Robert B. Chao, M.D.
Rheumatology Physician · Tysons, VA
Robert B. Chao, M.D. is a rheumatology physician with a practice address in Tysons, Virginia, and NPI 1033536735, issued on Mar 20, 2014. Check the license (Virginia 0101269638, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Robert B. Chao
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 0101269638 VA
Self-reported in NPPES; status is on the state search - Practice location
- 8100 Boone Blvd Ste 700, Tysons, VA 22182
- Phone
- (571) 423-5699
- Enumerated
- Mar 20, 2014
- Record last updated
- May 10, 2023
- Fax
- (571) 423-5698
- Medicare enrollment
- Enrolled (PECOS I20210216000945); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 197 in Virginia → Look up another NPI →
Also registered at 8100 Boone Blvd Ste 700
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Min Jin Detrick, PA-CPhysician Assistant1285884007
- Michael Keith, M.D.Rheumatology Physician1144280272
- Ashima Malik, MDRheumatology Physician1346449717
- Banafsheh Motazedi, M.D.Endocrinology, Diabetes & Metabolism Physician1457702573
- Merica Shrestha, M.D.Endocrinology, Diabetes & Metabolism Physician1083811855
- Mary Smith, RDNRegistered Dietitian1740791961
Verify Robert B. Chao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101269638Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average rheumatology physician in 2024
565 Medicare Part D claims for 118 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Hydroxychloroquine Sulfate113 claims
- Methotrexate84 claims
- Prednisone83 claims
- Humira(Cf) Pen33 claims
- Allopurinol27 claims
- Alendronate Sodium23 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Inova Health Care ServicesFalls Church, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert B. Chao among 197 rheumatology physician records in Virginia
Robert B. Chao, M.D. is one of 197 rheumatology physician records with a practice address in Virginia. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 82% of them.
- NPI issued2014 · 82% of these records are older, 16% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2014 · median 2004 among the 128 with a school on file
- Record last updated2023 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 rheumatology physician records list a practice address in Tysons
They are 4 of the 59 NPPES records with a practice address in Tysons, and 197 rheumatology physician records in Virginia.
All 197 in Virginia → Every provider in Tysons → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Michael Keith, M.D.Tysons, VA 221821144280272
- Ashima Malik, MDTysons, VA 221821346449717
- Mahnaz Momeni, MDVienna, VA 221821306924741
- Kathleen Stahl, MDVienna, VA 221821720616626
- Mahsa Tehrani, M.D.Vienna, VA 221821710113378
- Yingxue Zhang, M.D.Tysons, VA 221821235308412
- Yousef Zarbalian, M.D.Vienna, VA 221801396063319
- Summer Abdel-Megeed, MDWoodbridge, VA 221911790838118
Common questions
What is Robert B. Chao, M.D.'s NPI number?
Robert B. Chao, M.D.'s National Provider Identifier (NPI) is 1033536735, issued on Mar 20, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Robert B. Chao, M.D. located?
The NPPES record lists a practice address at 8100 Boone Blvd Ste 700, Tysons, VA, 22182. Phone: (571) 423-5699. Providers update this record themselves, so call before visiting.
How can I verify Robert B. Chao, M.D.'s license?
NPPES lists Virginia license number 0101269638, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert B. Chao, M.D. prescribe under Medicare Part D?
In 2024, Robert B. Chao, M.D. had 565 Medicare Part D claims for 118 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Robert B. Chao, M.D.'s MIPS final score?
The 2023 MIPS final score is 81.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.