Registry data as of Aug 27, 2026

Mark Hamer, M.D.

Cardiovascular Disease Physician · Rochester, NY

Mark Hamer, M.D. is a cardiovascular disease physician with a practice address in Rochester, New York, and NPI 1235107152, issued on Mar 8, 2006. Check the license on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1235107152
Name
Mark Hamer
Credential
M.D.
Primary taxonomy
Cardiovascular Disease Physician 207RC0000X
Practice location
140 Canal View Blvd, Rochester, NY 14623
Phone
(585) 338-2700
Enumerated
Mar 8, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 140 Canal View Blvd

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

  1. Eduardo Arazoza, MDCardiovascular Disease Physician1518937671
  2. Elizabeth Butterer, FNPFamily Nurse Practitioner1336452267
  3. Thomas Curran, MDNuclear Cardiology Physician1396711669
  4. Arica Ferguson, PASurgical Physician Assistant1366893596
  5. Nicole Holdsworth, NPMedical-Surgical Registered Nurse1073005997
  6. Seth Jacobson, M.D.Nuclear Cardiology Physician1114994381

Verify Mark Hamer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the ProfessionsCheck 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.

56% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024

1,381 Medicare Part D claims for 312 beneficiaries, against an average of 3,149 among the 19,556 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.

  1. Mark Hamer1,381
  2. Specialty average3,149

Most prescribed

  1. Metoprolol Succinate133 claims
  2. Eliquis130 claims
  3. Atorvastatin Calcium104 claims
  4. Losartan Potassium70 claims
  5. Amlodipine Besylate68 claims
  6. Warfarin Sodium65 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.

The practice group's Medicare quality score for 2023: 90.2 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score74.7
  2. Costout of 100 · 30%70.3
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $111.24

1 payment, mostly food and beverage; the largest payer was Medtronic, Inc.. The 16,209 providers of this specialty with any payment received $4,923.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Hamer$111.24
  2. Specialty average$4,923.81

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

2 hospital and facility affiliations

  1. St James HospitalHornell, NY · Acute Care Hospitals3 of 5 stars
  2. Cardiology Clinical GroupRochester, NY

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Cardiovascular Disease Physician providers in New York

There are 2,333 cardiovascular disease physician records in New York.

Other cardiovascular disease physician records in New York

  1. Michael Aaron, MDWest Islip, NY1790762623
  2. Vivian Abascal, MDRichmond Hill, NY1326049909
  3. Syed Faiz Abbas, MDRochester, NY1316557853
  4. Joseph Abboud, MDBrooklyn, NY1710168901
  5. Mohamed Abdel-Aal Ahmed, M.D.Buffalo, NY1164834776
  6. Khaled Abdulla, M.D.Orchard Park, NY1811423684
  7. Mohammed AbdulrazzaqBrooklyn, NY1871913095
  8. Saddam Abisse, MDSchenectady, NY1013179944
  9. Saji Abraham, M.B.B.S.Bayside, NY1497955603
  10. Jeffrey AbramsNew York, NY1609373869

Common questions

What is Mark Hamer, M.D.'s NPI number?

Mark Hamer, M.D.'s National Provider Identifier (NPI) is 1235107152, issued on Mar 8, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Hamer, M.D. located?

The NPPES record lists a practice address at 140 Canal View Blvd, Rochester, NY, 14623. Phone: (585) 338-2700. Providers update this record themselves, so call before visiting.

How can I verify Mark Hamer, M.D.'s license?

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 Mark Hamer, M.D. prescribe under Medicare Part D?

In 2024, Mark Hamer, M.D. had 1,381 Medicare Part D claims for 312 beneficiaries; the average among cardiovascular disease physician prescribers was 3,149. Part D covers Medicare prescriptions only.

What is Mark Hamer, M.D.'s Medicare quality score?

The 2023 MIPS final score is 90.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.