Olga Vasylyeva, M.D.
Infectious Disease Physician · Greenwich, CT
Olga Vasylyeva, M.D. is an infectious disease physician with a practice address in Greenwich, Connecticut, and NPI 1235455072, issued on Apr 19, 2010. Check the license (Connecticut 84050, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Olga Vasylyeva
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- 84050 CT
271226 NY
Self-reported in NPPES; status is on the state search - Practice location
- 5 Perryridge RD, Greenwich, CT 06830
- Phone
- (203) 869-8838
- Enumerated
- Apr 19, 2010
- Record last updated
- Jun 25, 2026
- Medicaid ID
- 04164274 NY
- Medicare enrollment
- Enrolled (PECOS I20150807014688); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 5 Perryridge RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tena AbrahamPharmacist1649838905
- Hanief Abrahams, M.D.Anesthesiology Physician1497798235
- Diana Adams, M.D.Maternal & Fetal Medicine Physician1255300653
- Saheeb AhmedStudent in an Organized Health Care Education/Training Program1326626748
- Rachel Alfandre, LCSWClinical Social Worker1497077259
- Vicki Altmeyer, M.D.Anatomic Pathology & Clinical Pathology Physician1700807898
Verify Olga Vasylyeva in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 84050Check 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 infectious disease physician in 2024
201 Medicare Part D claims for 47 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Cephalexin37 claims
- Amoxicillin22 claims
- Ciprofloxacin Hcl19 claims
- Methenamine Hippurate16 claims
- Doxycycline Hyclate13 claims
- Sodium Chloride13 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 MIPS final score for 2023 (Medicare payment program): 95.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $44.99
1 payment: education; the largest payer was Astellas Pharma US Inc. The 3,895 providers of this specialty with any payment received $4,362.19 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.
One hospital affiliation
- Rochester General HospitalRochester, NY · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Infectious Disease Physician providers in Connecticut
There are 202 infectious disease physician records in Connecticut.
Other infectious disease physician records in Connecticut
- Jessica Abrantes-Figueiredo, M.D.Southington, CT1962761569
- Amit Achhra, M.D., PHDNew Haven, CT1578918231
- Adekola Adedeji, MD, MPHBridgeport, CT1285190843
- Sharjeel Ahmad, M.D.Hartford, CT1568672426
- Frederick Altice, MDNew Haven, CT1710960158
- Paul Anthony, M.D.Hartford, CT1912156597
- Lydia Aoun-Barakat, MDWaterbury, CT1033183355
- Steven Aronin, MDWaterbury, CT1164495875
- Antonie Auguste, MDHartford, CT1508063165
- Alvaro Ayala, MDHartford, CT1346828381
Common questions
What is Olga Vasylyeva, M.D.'s NPI number?
Olga Vasylyeva, M.D.'s National Provider Identifier (NPI) is 1235455072, issued on Apr 19, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Olga Vasylyeva, M.D. located?
The NPPES record lists a practice address at 5 Perryridge RD, Greenwich, CT, 06830. Phone: (203) 869-8838. Providers update this record themselves, so call before visiting.
How can I verify Olga Vasylyeva, M.D.'s license?
NPPES lists Connecticut license number 84050, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Olga Vasylyeva, M.D. prescribe under Medicare Part D?
In 2024, Olga Vasylyeva, M.D. had 201 Medicare Part D claims for 47 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Olga Vasylyeva, M.D.'s MIPS final score?
The 2023 MIPS final score is 95.2 of 100. 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.