Catherine Reizun, DO
Internal Medicine Physician · Cooperstown, NY
Catherine Reizun, DO is an internal medicine physician with a practice address in Cooperstown, New York, and NPI 1609337864, issued on Mar 28, 2019. Check the license (New York 338974, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Catherine Reizun
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 338974 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1 Atwell RD, Cooperstown, NY 13326
- Phone
- (607) 547-3480
- Enumerated
- Mar 28, 2019
- Record last updated
- Oct 16, 2025
- Medicare enrollment
- Enrolled (PECOS I20251024001854); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 1 Atwell RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Fady AbdelmalekPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1124750682
- Mohamud Abdi, MDStudent in an Organized Health Care Education/Training Program1164225678
- Liana Abduova, MDStudent in an Organized Health Care Education/Training Program1770474017
- Dawn Abounader Chase, RDRegistered Dietitian1356584122
- Gayle Abramson, M.D.Diagnostic Radiology Physician1578676680
- Rami Abu Sbeit, M.D.Ophthalmology Physician1558056531
Verify Catherine Reizun 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 338974Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,954 Medicare Part D claims for 292 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 41 claims were for opioids.
Most prescribed
- Levothyroxine Sodium133 claims
- Amlodipine Besylate116 claims
- Omeprazole103 claims
- Atorvastatin Calcium99 claims
- Eliquis86 claims
- Trazodone Hcl83 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.
Bills Medicare through one group practice
- Mary Imogene Bassett HospitalCooperstown, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Reizun among 12,067 internal medicine physician records in New York
Catherine Reizun, DO 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).
61 internal medicine physician records list a practice address in Cooperstown
They are 61 of the 842 NPPES records with a practice address in Cooperstown, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Cooperstown → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Marina Bravin, M.D.Cooperstown, NY 133261679538409
- James Dalton, M.D.Cooperstown, NY 133261184685406
- Brenda Davies-Wait, D.O.Cooperstown, NY 133261053372748
- Douglas Delong, M.D.Cooperstown, NY 133261679534390
- John Dier, M.D.Cooperstown, NY 133261063473775
- Peter Howard, M.D.Cooperstown, NY 133261972564698
- Bruce Kramer, M.D.Cooperstown, NY 133261861457475
- James Kruse, M.D.Cooperstown, NY 133261679538292
Common questions
What is Catherine Reizun, DO's NPI number?
Catherine Reizun, DO's National Provider Identifier (NPI) is 1609337864, issued on Mar 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Reizun, DO located?
The NPPES record lists a practice address at 1 Atwell RD, Cooperstown, NY, 13326. Phone: (607) 547-3480. Providers update this record themselves, so call before visiting.
How can I verify Catherine Reizun, DO's license?
NPPES lists New York license number 338974, 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 Catherine Reizun, DO prescribe under Medicare Part D?
In 2024, Catherine Reizun, DO had 2,954 Medicare Part D claims for 292 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.