Michael Robert Kaczanowski, M.D.
Gastroenterology Physician · Nashua, NH
Michael Robert Kaczanowski, M.D. is a gastroenterology physician with a practice address in Nashua, New Hampshire, and NPI 1639371263, issued on Jun 5, 2007. Check the license (New Hampshire 13968, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Michael Robert Kaczanowski
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 13968 NH
Self-reported in NPPES; status is on the state search - Practice location
- 8 Prospect St, Nashua, NH 03060
- Phone
- (603) 577-5355
- Enumerated
- Jun 5, 2007
- Record last updated
- Sep 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (603) 577-5356
- Medicaid ID
- 3079568 NH
- Medicare enrollment
- Enrolled (PECOS I20080820000201); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 110 in New Hampshire → Look up another NPI →
Also registered at 8 Prospect St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael Robert Kaczanowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 13968Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
70% fewer Medicare Part D claims than the average gastroenterology physician in 2024
241 Medicare Part D claims for 106 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium107 claims
- Omeprazole25 claims
- Famotidine15 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: $192.72
9 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. 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.
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
- Foundation Medical Partners IncMilford, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Robert Kaczanowski among 110 gastroenterology physician records in New Hampshire
Michael Robert Kaczanowski, M.D. is one of 110 gastroenterology physician records with a practice address in New Hampshire. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 58% of them.
- NPI issued2007 · 58% of these records are older, 29% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2001 · median 2002 among the 80 with a school on file
- Record last updated2014 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in New Hampshire
There are 110 gastroenterology physician records in New Hampshire.
All 110 in New Hampshire → Every provider in Nashua → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Chengta Dai, MDNashua, NH 030601023189891
- Alan Freeman, M.D.,FRCPC,FACPNashua, NH 030601457322638
- Prasanna Gulur, M.D.Nashua, NH 030601164443750
- Michelle Le, DONashua, NH 030601629456686
- Mark Mallek, M.D.Nashua, NH 030601609841832
- Umer SyedNashua, NH 030601851734834
- Annette Tobar, MDNashua, NH 030601326206772
- Jassir Witta, M.D.Nashua, NH 030601851524284
Common questions
What is Michael Robert Kaczanowski, M.D.'s NPI number?
Michael Robert Kaczanowski, M.D.'s National Provider Identifier (NPI) is 1639371263, issued on Jun 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael Robert Kaczanowski, M.D. located?
The NPPES record lists a practice address at 8 Prospect St, Nashua, NH, 03060. Phone: (603) 577-5355. Providers update this record themselves, so call before visiting.
How can I verify Michael Robert Kaczanowski, M.D.'s license?
NPPES lists New Hampshire license number 13968, 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 Michael Robert Kaczanowski, M.D. prescribe under Medicare Part D?
In 2024, Michael Robert Kaczanowski, M.D. had 241 Medicare Part D claims for 106 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.