Michael Thiim, M.D.
Gastroenterology Physician · Haverhill, MA
Michael Thiim, M.D. is a gastroenterology physician with a practice address in Haverhill, Massachusetts, and NPI 1902801509, issued on Jun 20, 2005. Check the license (Massachusetts 79926, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Michael Thiim
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 79926 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Parkway, Haverhill, MA 01830
- Phone
- (978) 521-3270
- Enumerated
- Jun 20, 2005
- Record last updated
- Aug 4, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (978) 374-6495
- Medicaid ID
- 3129136 MA
- Medicare enrollment
- Enrolled (PECOS I20050118000368); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 1 Parkway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Abele, MDInternal Medicine Physician1720050099
- Kenneth Adams, M.D.Cardiovascular Disease Physician1720082787
- Cynthia Bashaw, N.P.Nurse Practitioner1730181108
- Steven Bloom, M.D.Pediatrics Physician1013919125
- Sherri Bolognese, PAPhysician Assistant1568404952
- Paula Boulanger, M.D.Pediatrics Physician1154323251
Verify Michael Thiim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 79926Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% more Medicare Part D claims than the average gastroenterology physician in 2024
1,212 Medicare Part D claims for 419 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Gavilyte-G227 claims
- Ursodiol149 claims
- Mycophenolate Mofetil68 claims
- Carvedilol60 claims
- Prednisone55 claims
- Vemlidy54 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 3 group practices
- Mass General Brigham Medical Group Northern Massachusetts IncDanvers, MA
- Massachusetts General Physicians Organization IncBoston, MA
- The General Hospital CorporationBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Thiim among 686 gastroenterology physician records in Massachusetts
Michael Thiim, M.D. is one of 686 gastroenterology physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1988 · median 2004 among the 491 with a school on file
- Record last updated2010 · 66% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Massachusetts
There are 686 gastroenterology physician records in Massachusetts.
All 686 in Massachusetts → Every provider in Haverhill → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ali Hashmi, M.B.B.SHaverhill, MA 018301336473172
- Jason Hemming, M.D.Haverhill, MA 018301184712010
- Francis Macmillan, M.D.Haverhill, MA 018301053316620
- Norman Miller, MDHavenhill, MA 018301235136367
- Bridget Seymour, M.D.Haverhill, MA 018301811104789
- Geetanjali Akerkar, M.D.Chelmsford, MA 018241144289166
- Joseph Dailey, MDChelmsford, MA 018241356878920
- Paul Gilmore, M.D.Chelmsford, MA 018241750340220
Common questions
What is Michael Thiim, M.D.'s NPI number?
Michael Thiim, M.D.'s National Provider Identifier (NPI) is 1902801509, issued on Jun 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Michael Thiim, M.D. located?
The NPPES record lists a practice address at 1 Parkway, Haverhill, MA, 01830. Phone: (978) 521-3270. Providers update this record themselves, so call before visiting.
How can I verify Michael Thiim, M.D.'s license?
NPPES lists Massachusetts license number 79926, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Thiim, M.D. prescribe under Medicare Part D?
In 2024, Michael Thiim, M.D. had 1,212 Medicare Part D claims for 419 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.