NPPES file of Aug 9, 2026

Jonathan Joseph Lewis, MD, PHD

Surgical Oncology Physician · Westport, CT

Jonathan Joseph Lewis, MD, PHD is a surgical oncology physician with a practice address in Westport, Connecticut, and NPI 1457038671, issued on Jun 29, 2023. Check the license on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1457038671
Name
Jonathan Joseph Lewis
Credential
MD, PHD
Primary taxonomy
Surgical Oncology Physician 2086X0206X
License number
189180 NY
Self-reported in NPPES; status is on the state search
Practice location
125 Hillandale RD, Westport, CT 06880
Phone
(646) 709-1005
Enumerated
Jun 29, 2023
Record last updated
Jun 29, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Jonathan Joseph Lewis in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersConnecticut Medical Examining BoardCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Connecticut license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $30,000.00

3 payments; by number, the most common kind was consulting fee; the largest payer was TriSalus Life Sciences, Inc. The 1,132 providers of this specialty with any payment received $4,224.74 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Jonathan Lewis$30,000
  2. Specialty average$4,225

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Jonathan Joseph Lewis among 38 surgical oncology physician records in Connecticut

Jonathan Joseph Lewis, MD, PHD is one of 38 surgical oncology physician records with a practice address in Connecticut. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 97% of them.

  • NPI issued2023 · 97% of these records are older, 0% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileNo · 71% of these records are
  • Record last updated2023 · 66% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086X0206X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Oncology Physician providers in Connecticut

There are 38 surgical oncology physician records in Connecticut.

The 8 surgical oncology physician records with the nearest ZIP codes

  1. Csaba Gajdos, MDStamford, CT 069021710192083
  2. Helen Pass, M.D.Stamford, CT 069021902810203
  3. Michael Stone, M.D.Stamford, CT 069021356300859
  4. Mandy Greenberg, M.D.Norwalk, CT 068511043414436
  5. Barbara Ward, MDGreenwich, CT 068301356378426
  6. Daniel Kleiner, MDDanbury, CT 068101033324496
  7. Daniel Labow, MDDanbury, CT 068101346216157
  8. Ramanathan Madras Seshadri, M.D.Danbury, CT 068101891969937

Common questions

What is Jonathan Joseph Lewis, MD, PHD's NPI number?

Jonathan Joseph Lewis, MD, PHD's National Provider Identifier (NPI) is 1457038671, issued on Jun 29, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Jonathan Joseph Lewis, MD, PHD located?

The NPPES record lists a practice address at 125 Hillandale RD, Westport, CT, 06880. Phone: (646) 709-1005. Providers update this record themselves, so call before visiting.

How can I verify Jonathan Joseph Lewis, MD, PHD's license?

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.