Ryan Alexander O'Connor, MD
Internal Medicine Physician · Cheektowaga, NY
Ryan Alexander O'Connor, MD is an internal medicine physician with a practice address in Cheektowaga, New York, and NPI 1477119949, issued on May 10, 2019. Check the license (New York 314095, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Ryan Alexander O'Connor
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 314095 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3091 William St, Cheektowaga, NY 14227
- Phone
- (716) 822-3098
- Enumerated
- May 10, 2019
- Record last updated
- Aug 13, 2025
- Medicare enrollment
- Enrolled (PECOS I20250804000320); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 3091 William St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christopher Barbolini, PAPhysician Assistant1972072098
- Susan Brandel LewRegistered Dietitian1568104651
- Jibran Mirza, M.D.Cardiovascular Disease Physician1699331736
- Rajarshi Parai, MDInternal Medicine Physician1073831657
- Kaitlin RomanFamily Nurse Practitioner1063753531
Verify Ryan Alexander O'Connor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 314095Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average internal medicine physician in 2024
194 Medicare Part D claims for 39 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Rosuvastatin Calcium30 claims
- Atorvastatin Calcium29 claims
- Metoprolol Succinate24 claims
- Carvedilol15 claims
- Losartan Potassium12 claims
- Amlodipine Besylate11 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.
3 hospitals and group practices
- Kenmore Mercy HospitalKenmore, NY · Acute Care Hospitals3 of 5 stars
- Sisters OF Charity Hospital OF Buffalo New YorkBuffalo, NY
- Trinity Medical Wny PCCheektowaga, NY
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.
Ryan Alexander O'Connor among 12,067 internal medicine physician records in New York
Ryan Alexander O'Connor, MD is one of 12,067 internal medicine physician records with a practice address in New York. 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 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2019 · median 2002 among the 7,221 with a school on file
- Record last updated2025 · 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 internal medicine physician records list a practice address in Cheektowaga
They are 18 of the 1,580 NPPES records with a practice address in Cheektowaga, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Cheektowaga → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Deirdre Bastible, MDCheektowaga, NY 142271821091794
- Joseph Cervi, MDCheektowaga, NY 142271831192467
- Megan Farrell, M.D.Cheektowaga, NY 142271609812635
- Christopher Jacobus, M.D.Cheektowaga, NY 142271275575920
- Rajarshi Parai, MDCheektowaga, NY 142271073831657
- Brian Snyder, M.DCheektowaga, NY 142271437148087
- John Tangeman, M.D.Cheektowaga, NY 142271073559001
- Karuna Ahuja, M.D.Amherst, NY 142261669496105
Common questions
What is Ryan Alexander O'Connor, MD's NPI number?
Ryan Alexander O'Connor, MD's National Provider Identifier (NPI) is 1477119949, issued on May 10, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Ryan Alexander O'Connor, MD located?
The NPPES record lists a practice address at 3091 William St, Cheektowaga, NY, 14227. Phone: (716) 822-3098. Providers update this record themselves, so call before visiting.
How can I verify Ryan Alexander O'Connor, MD's license?
NPPES lists New York license number 314095, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ryan Alexander O'Connor, MD prescribe under Medicare Part D?
In 2024, Ryan Alexander O'Connor, MD had 194 Medicare Part D claims for 39 beneficiaries; 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.