Steven W. Ryder, M.D.
Internal Medicine Physician · Westport, CT
Steven W. Ryder, M.D. is an internal medicine physician with a practice address in Westport, Connecticut, and NPI 1104069798, issued on Apr 12, 2009. Check the license (Connecticut 028478, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Steven W. Ryder
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 028478 CT
ME102327 FL
Self-reported in NPPES; status is on the state search - Practice location
- 4 Ambler RD W, Westport, CT 06880
- Phone
- (203) 695-7933
- Enumerated
- Apr 12, 2009
- Record last updated
- Dec 18, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Verify Steven W. Ryder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 028478Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
37 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Steven W. Ryder among 2,623 internal medicine physician records in Connecticut
Steven W. Ryder, M.D. is one of 2,623 internal medicine 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 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 38% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2015 · 61% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 internal medicine physician records list a practice address in Westport
They are 23 of the 886 NPPES records with a practice address in Westport, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in Westport → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Altbaum, M.D.Westport, CT 068801285736124
- David Baum, M.D.Westport, CT 068801437175486
- Jill Denowitz, M.D.Westport, CT 068801215013941
- Robert Dresdner, M.D.Westport, CT 068801356443204
- Samuel Frumkin, M.D.Westport, CT 068801124120043
- Jay Horn, M.D.Westport, CT 068801013093731
- Nina Karol, M.D.Westport, CT 068801548286818
- Anthony Lamarca, MDWestport, CT 068801336105139
Common questions
What is Steven W. Ryder, M.D.'s NPI number?
Steven W. Ryder, M.D.'s National Provider Identifier (NPI) is 1104069798, issued on Apr 12, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Steven W. Ryder, M.D. located?
The NPPES record lists a practice address at 4 Ambler RD W, Westport, CT, 06880. Phone: (203) 695-7933. Providers update this record themselves, so call before visiting.
How can I verify Steven W. Ryder, M.D.'s license?
NPPES lists Connecticut license number 028478, 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 Steven W. Ryder, M.D. prescribe under Medicare Part D?
In 2024, Steven W. Ryder, M.D. had 37 Medicare Part D claims; 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.