Barbara Boyd Yosaitis, M.D.
Internal Medicine Physician · Fairfax, VA
Barbara Boyd Yosaitis, M.D. is an internal medicine physician with a practice address in Fairfax, Virginia, and NPI 1679617997, issued on Feb 19, 2007. Check the license (Virginia 0101049120, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Barbara Boyd Yosaitis
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0101049120 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3650 Joseph Siewick Dr, Fairfax, VA 22033
- Phone
- (703) 264-0521
- Enumerated
- Feb 19, 2007
- Record last updated
- May 21, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080515000074); accepts Medicare assignment
- Medical or professional school
- Rutgers New Jersey Medical School, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,599 in Virginia → Look up another NPI →
Also registered at 3650 Joseph Siewick Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Barbara Boyd Yosaitis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101049120Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% more Medicare Part D claims than the average internal medicine physician in 2024
3,972 Medicare Part D claims for 309 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 65 claims were for opioids.
Most prescribed
- Atorvastatin Calcium361 claims
- Levothyroxine Sodium168 claims
- Amlodipine Besylate129 claims
- Hydrochlorothiazide117 claims
- Metoprolol Succinate111 claims
- Losartan Potassium101 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.
Industry payments in 2024: $1,070.53
50 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Inova Health Care ServicesSpringfield, VA
- Privia Medical Group, LLCFairfax, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Barbara Boyd Yosaitis among 3,599 internal medicine physician records in Virginia
Barbara Boyd Yosaitis, M.D. is one of 3,599 internal medicine 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 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 45% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1991 · median 2003 among the 2,234 with a school on file
- Record last updated2008 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
108 internal medicine physician records list a practice address in Fairfax
They are 108 of the 6,584 NPPES records with a practice address in Fairfax, and 3,599 internal medicine physician records in Virginia.
All 3,599 in Virginia → Every provider in Fairfax → Internal Medicine Physician nationwide →
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- Michael Greene, M.D.Fairfax, VA 220331316045644
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Common questions
What is Barbara Boyd Yosaitis, M.D.'s NPI number?
Barbara Boyd Yosaitis, M.D.'s National Provider Identifier (NPI) is 1679617997, issued on Feb 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Barbara Boyd Yosaitis, M.D. located?
The NPPES record lists a practice address at 3650 Joseph Siewick Dr, Fairfax, VA, 22033. Phone: (703) 264-0521. Providers update this record themselves, so call before visiting.
How can I verify Barbara Boyd Yosaitis, M.D.'s license?
NPPES lists Virginia license number 0101049120, 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 Barbara Boyd Yosaitis, M.D. prescribe under Medicare Part D?
In 2024, Barbara Boyd Yosaitis, M.D. had 3,972 Medicare Part D claims for 309 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.