Katherine Marie Vaillancourt, MD
Family Medicine Physician · Stamford, CT
Katherine Marie Vaillancourt, MD is a family medicine physician with a practice address in Stamford, Connecticut, and NPI 1770112260, issued on Apr 6, 2020. Check the license (Connecticut 75322, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Katherine Marie Vaillancourt
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 75322 CT
Self-reported in NPPES; status is on the state search - Practice location
- 1351 Washington Blvd, Stamford, CT 06902
- Phone
- (203) 621-3700
- Enumerated
- Apr 6, 2020
- Record last updated
- Aug 1, 2025
- Fax
- (203) 621-3711
- Medicare enrollment
- Enrolled (PECOS I20230829001043); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 958 in Connecticut → Look up another NPI →
Also registered at 1351 Washington Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katherine Marie Vaillancourt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 75322Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family medicine physician in 2024
243 Medicare Part D claims for 65 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Atorvastatin Calcium24 claims
- Diclofenac Sodium19 claims
- Zolpidem Tartrate15 claims
- Alprazolam12 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: $30.59
2 payments; by number, the most common kind was food and beverage; the largest payer was Organon Llc. The 55,478 providers of this specialty with any payment received $902.55 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
- Optimus Health Care IncStamford, CT
- Stamford Health Medical Group IncStamford, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Marie Vaillancourt among 958 family medicine physician records in Connecticut
Katherine Marie Vaillancourt, MD is one of 958 family medicine physician records with a practice address in Connecticut. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 86% of them.
- NPI issued2020 · 86% of these records are older, 10% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2020 · median 2009 among the 611 with a school on file
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
57 family medicine physician records list a practice address in Stamford
They are 57 of the 2,774 NPPES records with a practice address in Stamford, and 958 family medicine physician records in Connecticut.
All 958 in Connecticut → Every provider in Stamford → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Rodrigo Acosta, M.D.Stamford, CT 069021023102092
- Anne Brewer, MDStamford, CT 069021932118577
- Joseph Connelly, MDStamford, CT 069021346261120
- Joseph Feuerstein, M.D.Stamford, CT 069021619067162
- Efraim Gomez Zapata, MDStamford, CT 069021053479998
- Krishnan Narasimhan, M.D.Stamford, CT 069021922035450
- Kathleen Nurena, M.D.Stamford, CT 069021437191954
- Jaime Rivas, M.D.Stamford, CT 069021043347537
Common questions
What is Katherine Marie Vaillancourt, MD's NPI number?
Katherine Marie Vaillancourt, MD's National Provider Identifier (NPI) is 1770112260, issued on Apr 6, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Marie Vaillancourt, MD located?
The NPPES record lists a practice address at 1351 Washington Blvd, Stamford, CT, 06902. Phone: (203) 621-3700. Providers update this record themselves, so call before visiting.
How can I verify Katherine Marie Vaillancourt, MD's license?
NPPES lists Connecticut license number 75322, 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 Katherine Marie Vaillancourt, MD prescribe under Medicare Part D?
In 2024, Katherine Marie Vaillancourt, MD had 243 Medicare Part D claims for 65 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.