Registry data as of Aug 27, 2026

Benjamin Irzyk, DMD

Dentist · Portsmouth, NH

Benjamin Irzyk, DMD is a dentist with a practice address in Portsmouth, New Hampshire, and NPI 1588082002, issued on Apr 1, 2014. Check the license (New Hampshire 04147, as entered in NPPES) with the New Hampshire board that licenses this profession; 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
1588082002
Name
Benjamin Irzyk
Credential
DMD
Primary taxonomy
Dentist 122300000X
License number
04147 NH
Self-reported in NPPES; status is on the state search
Practice location
85 Merrimac St, Portsmouth, NH 03801
Phone
(603) 436-6922
Enumerated
Apr 1, 2014
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 85 Merrimac St

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

  1. Janet Allaire, DMDGeneral Practice Dentistry1811918956
  2. Marc Greer, DMDGeneral Practice Dentistry1467476499

Verify Benjamin Irzyk in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New Hampshire board licenses this profession
    Search for license 04147
    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 New Hampshire 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.

40% fewer Medicare Part D claims than the average dentist in 2024

54 Medicare Part D claims for 43 beneficiaries, against an average of 90 among the 51,502 providers of this specialty who prescribed in Part D.

  1. Benjamin Irzyk54
  2. Specialty average90

Most prescribed

  1. Amoxicillin24 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: $382.75

15 payments, mostly food and beverage; the largest payer was Dentsply Sirona Inc. The 32,932 providers of this specialty with any payment received $579.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Benjamin Irzyk$382.75
  2. Specialty average$579.61

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

Dentist providers in New Hampshire

There are 387 dentist records in New Hampshire.

Other dentist records in New Hampshire

  1. Slava Abdelrehim, DDSNashua, NH1124242946
  2. Natalie Accomando, DMDManchester, NH1821167008
  3. Sion Agami Contreras, DDSNew Boston, NH1720914005
  4. Laurie Aiton, DMDConcord, NH1114026507
  5. Andrew Albee, DMDPembroke, NH1649400110
  6. Ridab Alnabhan, DDSKeene, NH1649888165
  7. Marco Amer, DMDManchester, NH1821499922
  8. Pranali AminTilton, NH1306262373
  9. Fnu Anitha Abdulrahiman, D.M.D.Londonderry, NH1194194084
  10. Eric Anthony, D.M.DNashua, NH1649590852

Common questions

What is Benjamin Irzyk, DMD's NPI number?

Benjamin Irzyk, DMD's National Provider Identifier (NPI) is 1588082002, issued on Apr 1, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Benjamin Irzyk, DMD located?

The NPPES record lists a practice address at 85 Merrimac St, Portsmouth, NH, 03801. Phone: (603) 436-6922. Providers update this record themselves, so call before visiting.

How can I verify Benjamin Irzyk, DMD's license?

NPPES lists New Hampshire license number 04147, as entered by the provider. Search the New Hampshire board that licenses this profession; the NPPES record confirms identity only.

How much does Benjamin Irzyk, DMD prescribe under Medicare Part D?

In 2024, Benjamin Irzyk, DMD had 54 Medicare Part D claims for 43 beneficiaries; the average among dentist prescribers was 90. Part D covers Medicare prescriptions only.

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.