NPPES file of Aug 9, 2026

Brian Markowski, OD

Optometrist · Bloomsburg, PA

Brian Markowski, OD is an optometrist with a practice address in Bloomsburg, Pennsylvania, and NPI 1932834843, issued on Jul 24, 2022. Check the license (Pennsylvania OEG003936, as entered in NPPES) with the Pennsylvania board that licenses this profession; 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
1932834843
Name
Brian Markowski
Credential
OD
Primary taxonomy
Optometrist 152W00000X
License number
OEG003936 PA
Self-reported in NPPES; status is on the state search
Practice location
1901 Columbia Blvd, Bloomsburg, PA 17815
Phone
(570) 387-0991
Enumerated
Jul 24, 2022
Record last updated
Aug 1, 2022
Medicare enrollment
Enrolled (PECOS I20231108003584); 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 1901 Columbia Blvd

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

  1. Gary Finnegan, O.D.Optometrist1831291616
  2. Robert Neiderhiser, D.C.Chiropractor1801889118

Verify Brian Markowski in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Pennsylvania board licenses this profession
    Search for license OEG003936
    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
Find the Pennsylvania license search

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About as many Medicare Part D claims as the average optometrist in 2024

276 Medicare Part D claims for 105 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.

  1. Brian Markowski276
  2. Specialty average277

Most prescribed

  1. Latanoprost114 claims
  2. Lumigan29 claims
  3. Timolol Maleate22 claims
  4. Cyclosporine13 claims
  5. Loteprednol Etabonate12 claims
  6. Dorzolamide-Timolol11 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: $779.46

18 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Brian Markowski$779.46
  2. Specialty average$769.99

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. New York Optometry Professional PLLCSidney, NY

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

Brian Markowski among 2,640 optometrist records in Pennsylvania

Brian Markowski, OD is one of 2,640 optometrist records with a practice address in Pennsylvania. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 91% of them.

  • NPI issued2022 · 91% of these records are older, 7% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated2022 · median 2004 among the 1,588 with a school on file
  • Record last updated2022 · 69% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

7 optometrist records list a practice address in Bloomsburg

They are 7 of the 617 NPPES records with a practice address in Bloomsburg, and 2,640 optometrist records in Pennsylvania.

The 8 optometrist records with the nearest ZIP codes

  1. David Clark, ODBloomsburg, PA 178151013011568
  2. Laurie Costarelli, ODBloomsburg, PA 178151417955600
  3. David Derose, ODBloomsburg, PA 178151992814073
  4. Nicholas Drobny, ODBloomsburg, PA 178151174521371
  5. Gary Finnegan, O.D.Bloomsburg, PA 178151831291616
  6. Joseph Serniak, ODBloomsburg, PA 178151326122078
  7. John Hutnick, ODBenton, PA 178141174738587
  8. Peter Costarelli, ODDanville, PA 178211922268143

Common questions

What is Brian Markowski, OD's NPI number?

Brian Markowski, OD's National Provider Identifier (NPI) is 1932834843, issued on Jul 24, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Brian Markowski, OD located?

The NPPES record lists a practice address at 1901 Columbia Blvd, Bloomsburg, PA, 17815. Phone: (570) 387-0991. Providers update this record themselves, so call before visiting.

How can I verify Brian Markowski, OD's license?

NPPES lists Pennsylvania license number OEG003936, as entered by the provider. Search the Pennsylvania board that licenses this profession; the NPPES record confirms identity only.

How much does Brian Markowski, OD prescribe under Medicare Part D?

In 2024, Brian Markowski, OD had 276 Medicare Part D claims for 105 beneficiaries; the average among optometrist prescribers was 277. 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.