Marjorie Ketzak, DO
Family Medicine Physician · Oxford, NY
Marjorie Ketzak, DO is a family medicine physician with a practice address in Oxford, New York, and NPI 1780684159, issued on Jul 28, 2005. Check the license (New York 2200SG, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Marjorie Ketzak
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 2200SG NY
Self-reported in NPPES; status is on the state search - Practice location
- 4207 State Highway 220, Oxford, NY 13830
- Phone
- (607) 843-3140
- Enumerated
- Jul 28, 2005
- Record last updated
- Nov 27, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (607) 843-3162
- Medicaid ID
- 02154465 NY
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,417 in New York → Look up another NPI →
Also registered at 4207 State Highway 220
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marjorie Ketzak 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 2200SGCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average family medicine physician in 2024
1,317 Medicare Part D claims for 66 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Tamsulosin Hcl69 claims
- Gabapentin67 claims
- Furosemide60 claims
- Pantoprazole Sodium60 claims
- Levothyroxine Sodium56 claims
- Metoprolol Tartrate53 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.
Marjorie Ketzak among 6,417 family medicine physician records in New York
Marjorie Ketzak, DO is one of 6,417 family medicine physician records with a practice address in New York. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2020 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 family medicine physician records list a practice address in Oxford
They are 2 of the 34 NPPES records with a practice address in Oxford, and 6,417 family medicine physician records in New York.
All 6,417 in New York → Every provider in Oxford → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Margaret Davis, MDOxford, NY 138301790753549
- Arvin Aranda, MDOwego, NY 138271609864792
- Julie Gallo, DOOwego, NY 138271275062481
- Mackenzie HintzeOwego, NY 138271861178964
- Michelle LombardoOwego, NY 138271083008445
- Benjamin Luce, DOOwego, NY 138271528557436
- Lisa Newman, DOOwego, NY 138271861564742
- Keith Nichols, M.D.Owego, NY 138271124098785
Common questions
What is Marjorie Ketzak, DO's NPI number?
Marjorie Ketzak, DO's National Provider Identifier (NPI) is 1780684159, issued on Jul 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Marjorie Ketzak, DO located?
The NPPES record lists a practice address at 4207 State Highway 220, Oxford, NY, 13830. Phone: (607) 843-3140. Providers update this record themselves, so call before visiting.
How can I verify Marjorie Ketzak, DO's license?
NPPES lists New York license number 2200SG, 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 Marjorie Ketzak, DO prescribe under Medicare Part D?
In 2024, Marjorie Ketzak, DO had 1,317 Medicare Part D claims for 66 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.