NPPES file of Aug 9, 2026

Alexander William Filipski, DO

Family Medicine Physician · Oswego, NY

Alexander William Filipski, DO is a family medicine physician with a practice address in Oswego, New York, and NPI 1598056202, issued on Apr 28, 2011. Check the license (New York 275831, as entered in NPPES) on the NYS Education Department, Office of the Professions; 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
1598056202
Name
Alexander William Filipski
Credential
DO
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
275831 NY
Self-reported in NPPES; status is on the state search
Practice location
120 E 1St St, Oswego, NY 13126
Phone
(315) 342-0880
Enumerated
Apr 28, 2011
Record last updated
Apr 29, 2025
Fax
(315) 593-6195
Medicare enrollment
Enrolled (PECOS I20140929000013); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 120 E 1St St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Beverly Aubin, NPFamily Nurse Practitioner1821640004
  2. Madison BarnettPhysician Assistant1366295834
  3. Katie Beebe, FNP-CFamily Nurse Practitioner1730734039
  4. Valerie McCarthy, MDFamily Medicine Physician1295227924
  5. Ashley Monroe, PMHNPPsychiatric/Mental Health Nurse Practitioner1255036463
  6. Kelli Proulx, M.S. CCC-SLPSpeech-Language Pathologist1700169919

Verify Alexander William Filipski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 275831
    Check 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 New York 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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2.1 times the Medicare Part D claims of the average family medicine physician in 2024

7,382 Medicare Part D claims for 513 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 163 claims were for opioids.

  1. Alexander Filipski7,382
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium389 claims
  2. Lisinopril310 claims
  3. Levothyroxine Sodium287 claims
  4. Omeprazole225 claims
  5. Albuterol Sulfate Hfa220 claims
  6. Amlodipine Besylate199 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.

Industry payments in 2024: $122.99

7 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alexander Filipski$122.99
  2. Specialty average$902.55

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

Bills Medicare through one group practice

  1. Northern Oswego County Health Services, Inc.Oswego, NY

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Alexander William Filipski among 6,417 family medicine physician records in New York

Alexander William Filipski, 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 2011, is newer than 60% of them.

  • NPI issued2011 · 60% of these records are older, 37% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2011 · median 2007 among the 4,188 with a school on file
  • Record last updated2025 · 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).

16 family medicine physician records list a practice address in Oswego

They are 16 of the 1,198 NPPES records with a practice address in Oswego, and 6,417 family medicine physician records in New York.

The 8 family medicine physician records with the nearest ZIP codes

  1. John Covell, MDOswego, NY 131261750498903
  2. Carlos Dator, MDOswego, NY 131261114287158
  3. Alison Fluman, FNP-COswego, NY 131261578084075
  4. Douglas Guenter, DOUGLAS GUENTEROswego, NY 131261659450989
  5. Mark Humphrey, D.O.Oswego, NY 131261831126648
  6. Christina Liepke, M.D.Oswego, NY 131261942290358
  7. Linda Mandanas, MDOswego, NY 131261013061431
  8. Valerie McCarthy, MDOswego, NY 131261295227924

Common questions

What is Alexander William Filipski, DO's NPI number?

Alexander William Filipski, DO's National Provider Identifier (NPI) is 1598056202, issued on Apr 28, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Alexander William Filipski, DO located?

The NPPES record lists a practice address at 120 E 1St St, Oswego, NY, 13126. Phone: (315) 342-0880. Providers update this record themselves, so call before visiting.

How can I verify Alexander William Filipski, DO's license?

NPPES lists New York license number 275831, 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 Alexander William Filipski, DO prescribe under Medicare Part D?

In 2024, Alexander William Filipski, DO had 7,382 Medicare Part D claims for 513 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.