Mark Leondires, MD
Obstetrics & Gynecology Physician · Norwalk, CT
Mark Leondires, MD is an obstetrics & gynecology physician with a practice address in Norwalk, Connecticut, and NPI 1063437275, issued on Jul 12, 2006. Check the license (Connecticut 040142, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Mark Leondires
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 040142 CT
Self-reported in NPPES; status is on the state search - Practice location
- 761 Main Ave, Norwalk, CT 06851
- Phone
- (203) 750-7400
- Enumerated
- Jul 12, 2006
- Record last updated
- Dec 31, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 707 in Connecticut → Look up another NPI →
Also registered at 761 Main Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Adelmann, M.D.Gastroenterology Physician1861436511
- Stella Arbitman, M.D., CCFPFamily Medicine Physician1467726141
- Thomas Ayoub, MDObstetrics & Gynecology Physician1700990652
- Kristen Baker, PA CMedical Physician Assistant1427061100
- Sharyu Bande, MDInternal Medicine Physician1619130705
- Cindy Barboza, APRNFamily Nurse Practitioner1528499951
Verify Mark Leondires in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 040142Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $1,374.84
8 payments; by number, the most common kind was food and beverage; the largest payer was Merck KGaA. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Mark Leondires among 707 obstetrics & gynecology physician records in Connecticut
Mark Leondires, MD is one of 707 obstetrics & gynecology physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2014 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Connecticut
There are 707 obstetrics & gynecology physician records in Connecticut.
All 707 in Connecticut → Every provider in Norwalk → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Thomas Ayoub, MDNorwalk, CT 068511700990652
- Deanna Delprete, DONorwalk, CT 068511902910821
- Clifford Feller, MDNorwalk, CT 068511174581706
- Maryam Hedayatzadeh, M.D.Norwalk, CT 068511700013182
- Sujata Pendyala, D.O.Norwalk, CT 068511114009842
- Tania Plaisimond, M.D.Norwalk, CT 068511669822607
- Christine Waldron, DONorwalk, CT 068511639262884
- Elizabeth Alexander, MDNorwalk, CT 068501669882635
Common questions
What is Mark Leondires, MD's NPI number?
Mark Leondires, MD's National Provider Identifier (NPI) is 1063437275, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Leondires, MD located?
The NPPES record lists a practice address at 761 Main Ave, Norwalk, CT, 06851. Phone: (203) 750-7400. Providers update this record themselves, so call before visiting.
How can I verify Mark Leondires, MD's license?
NPPES lists Connecticut license number 040142, 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.
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.