NPPES file of Aug 9, 2026

Matthew John Zak, MD

Physical Medicine & Rehabilitation Physician · Plymouth, NH

Matthew John Zak, MD is a physical medicine & rehabilitation physician with a practice address in Plymouth, New Hampshire, and NPI 1588897953, issued on Sep 1, 2009. Check the license (New Hampshire 19679, as entered in NPPES) on the New Hampshire Board of Medicine; 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
1588897953
Name
Matthew John Zak
Credential
MD
Primary taxonomy
Physical Medicine & Rehabilitation Physician 208100000X
License number
19679 NH
Self-reported in NPPES; status is on the state search
Practice location
101 Boulder Point Dr Ste 1, Plymouth, NH 03264
Phone
(603) 536-4000
Enumerated
Sep 1, 2009
Record last updated
Feb 11, 2025
Fax
(603) 536-4001
Medicare enrollment
Enrolled (PECOS I20190516000682); accepts Medicare assignment
Medical or professional school
University Of Tennessee, Hsc, College Of Medicine, 2009
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 101 Boulder Point Dr Ste 1

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

  1. Danette ColellaPediatrics Physician1033109095
  2. Jason Forster, PA-CPhysician Assistant1114301876
  3. Kristina Foss, FNPFamily Nurse Practitioner1073861191
  4. Katherine Gagan, MDFamily Medicine Physician1770148850
  5. Tasha Gallup, PA-CMedical Physician Assistant1679973390
  6. Jennelle Guiod, APRN FNP-BCFamily Nurse Practitioner1154094530

Verify Matthew John Zak in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Hampshire Board of Medicine
    Search for license 19679
    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 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.

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69% fewer Medicare Part D claims than the average physical medicine & rehabilitation physician in 2024

225 Medicare Part D claims for 181 beneficiaries, against an average of 727 among the 7,448 providers of this specialty who prescribed in Part D.

  1. Matthew Zak225
  2. Specialty average727

Most prescribed

  1. Amoxicillin-Clavulanate Potass34 claims
  2. Cephalexin32 claims
  3. Methylprednisolone23 claims
  4. Nitrofurantoin Mono-Macro19 claims
  5. Prednisone18 claims
  6. Doxycycline Hyclate16 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.

Bills Medicare through one group practice

  1. Mid-State Health CenterPlymouth, NH

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

Matthew John Zak among 64 physical medicine & rehabilitation physician records in New Hampshire

Matthew John Zak, MD is one of 64 physical medicine & rehabilitation physician records with a practice address in New Hampshire. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 59% of them.

  • NPI issued2009 · 59% of these records are older, 36% newer
  • In a Medicare fileYes · 55% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated2009 · median 2004 among the 32 with a school on file
  • Record last updated2025 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208100000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Physical Medicine & Rehabilitation Physician providers in New Hampshire

There are 64 physical medicine & rehabilitation physician records in New Hampshire.

The 8 physical medicine & rehabilitation physician records with the nearest ZIP codes

  1. Heather JoubertLaconia, NH 032461336561703
  2. Tina Aubin, PTConcord, NH 033011730199761
  3. Jeffrey Clough, PTConcord, NH 033011568472447
  4. Brigitte Cook, PTConcord, NH 033011972513992
  5. Erin DaleyConcord, NH 033011245060144
  6. Julia Dewdney, PTConcord, NH 033011750483988
  7. Margaret Donohue, PTConcord, NH 033011457361347
  8. Victoria Dufour, DOConcord, NH 033011578972246

Common questions

What is Matthew John Zak, MD's NPI number?

Matthew John Zak, MD's National Provider Identifier (NPI) is 1588897953, issued on Sep 1, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Matthew John Zak, MD located?

The NPPES record lists a practice address at 101 Boulder Point Dr Ste 1, Plymouth, NH, 03264. Phone: (603) 536-4000. Providers update this record themselves, so call before visiting.

How can I verify Matthew John Zak, MD's license?

NPPES lists New Hampshire license number 19679, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Matthew John Zak, MD prescribe under Medicare Part D?

In 2024, Matthew John Zak, MD had 225 Medicare Part D claims for 181 beneficiaries; the average among physical medicine & rehabilitation physician prescribers was 727. 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.