Michael Jonathan Older, M.D.
Gastroenterology Physician · Ayer, MA
Michael Jonathan Older, M.D. is a gastroenterology physician with a practice address in Ayer, Massachusetts, and NPI 1194757625, issued on Jul 7, 2006. Check the license (Massachusetts 71640, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Michael Jonathan Older
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 71640 MA
Self-reported in NPPES; status is on the state search - Practice location
- 190 Groton RD, Ayer, MA 01432
- Phone
- (978) 772-3547
- Enumerated
- Jul 7, 2006
- Record last updated
- Jan 29, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050405000885); may accept Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 1988
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 190 Groton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Deanna Kardoos, PA-CPhysician Assistant1386693885
Verify Michael Jonathan Older in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 71640Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average gastroenterology physician in 2024
1,883 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
- Omeprazole908 claims
- Pantoprazole Sodium170 claims
- Sod Sulf-Potass Sulf-Mag Sulf79 claims
- Sucralfate65 claims
- Metoclopramide Hcl53 claims
- Linzess51 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: $55.58
3 payments; by number, the most common kind was food and beverage; the largest payer was Phathom Pharmaceuticals, 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.
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
- Lifespan Physician Group OF Massachusetts IncTaunton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Jonathan Older among 686 gastroenterology physician records in Massachusetts
Michael Jonathan Older, 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 49% 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 updated2014 · 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 Ayer → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Ayaz Malik, M.D.Gardner, MA 014401154320984
- Phani Molakatalla, M.D.Gardner, MA 014401861620007
- Elliot Feinberg, M.D.Leominster, MA 014531962442491
- Mariann Padron Gleich, M.D.Leominster, MA 014531578721049
- Naveen Pandaraboyina, MDLeominster, MA 014531073533485
- Amin Soltani, M.D.Leominster, MA 014531912361643
- Min Soo Song, MD.,CMLeominster, MA 014531053575340
- Vernu Visvalingam, MDLeominster, MA 014531396700274
Common questions
What is Michael Jonathan Older, M.D.'s NPI number?
Michael Jonathan Older, M.D.'s National Provider Identifier (NPI) is 1194757625, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Jonathan Older, M.D. located?
The NPPES record lists a practice address at 190 Groton RD, Ayer, MA, 01432. Phone: (978) 772-3547. Providers update this record themselves, so call before visiting.
How can I verify Michael Jonathan Older, M.D.'s license?
NPPES lists Massachusetts license number 71640, 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 Jonathan Older, M.D. prescribe under Medicare Part D?
In 2024, Michael Jonathan Older, M.D. had 1,883 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.