NPPES file of Aug 9, 2026

Howard Steven Mitz, D.O.

Gastroenterology Physician · Littleton, NH

Howard Steven Mitz, D.O. is a gastroenterology physician with a practice address in Littleton, New Hampshire, and NPI 1558365155, issued on Jun 10, 2005. Check the license (New Hampshire 9856, 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
1558365155
Name
Howard Steven Mitz
Credential
D.O.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
9856 NH
Self-reported in NPPES; status is on the state search
Practice location
220 Cottage St, Littleton, NH 03561
Phone
(603) 444-0272
Enumerated
Jun 10, 2005
Record last updated
Feb 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(603) 444-0274
Medicaid ID
80004269 NH
Medicare enrollment
Enrolled (PECOS I20051227000183); accepts Medicare assignment
Medical or professional school
Kansas City University Of Med & Biosciences, College Of Osteo Med, 1985
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 220 Cottage St

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

  1. Karen Armento, CRNACertified Registered Nurse Anesthetist1932138674
  2. Crystal Colby, PA-CMedical Physician Assistant1346304888
  3. Robert Stone, CRNACertified Registered Nurse Anesthetist1831265362

Verify Howard Steven Mitz 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 9856
    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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38% fewer Medicare Part D claims than the average gastroenterology physician in 2024

500 Medicare Part D claims for 113 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Howard Mitz500
  2. Specialty average811

Most prescribed

  1. Pantoprazole Sodium176 claims
  2. Omeprazole104 claims
  3. Esomeprazole Magnesium23 claims
  4. Famotidine23 claims
  5. Creon20 claims
  6. Mesalamine15 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: $242.45

1 payment: debt forgiveness; the largest payer was Olympus America Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Howard Mitz$242.45
  2. Specialty average$5,015.95

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

Gastroenterology Physician providers in New Hampshire

There are 110 gastroenterology physician records in New Hampshire.

Other gastroenterology physician records in New Hampshire

  1. Alain Ades, M.D.Stratham, NH1457327900
  2. Jeffrey Adler, M.D.Lebanon, NH1225327638
  3. Vincent Aguirre, M.D., PH.D.Manchester, NH1548396211
  4. Peter Anderson, M.D.Lebanon, NH1962425033
  5. John Baier, MDConcord, NH1326133539
  6. Steve Bensen, M.D.Lebanon, NH1427071596
  7. Michael Bowen, MDWolfeboro, NH1245335736
  8. Jack Bueno, MDNashua, NH1619990496
  9. Lynn Butterly, M.D.Lebanon, NH1982623070
  10. Chad Cabral, D.O.Exeter, NH1427226448

Common questions

What is Howard Steven Mitz, D.O.'s NPI number?

Howard Steven Mitz, D.O.'s National Provider Identifier (NPI) is 1558365155, issued on Jun 10, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Howard Steven Mitz, D.O. located?

The NPPES record lists a practice address at 220 Cottage St, Littleton, NH, 03561. Phone: (603) 444-0272. Providers update this record themselves, so call before visiting.

How can I verify Howard Steven Mitz, D.O.'s license?

NPPES lists New Hampshire license number 9856, 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 Howard Steven Mitz, D.O. prescribe under Medicare Part D?

In 2024, Howard Steven Mitz, D.O. had 500 Medicare Part D claims for 113 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.