Thomas P. Kaegi, M.D.
Internal Medicine Physician · Concord, MA
Thomas P. Kaegi, M.D. is an internal medicine physician with a practice address in Concord, Massachusetts, and NPI 1578552121, issued on Oct 17, 2005. Check the license (Massachusetts 79435, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Thomas P. Kaegi
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 79435 MA
Self-reported in NPPES; status is on the state search - Practice location
- 330 Baker Ave, Concord, MA 01742
- Phone
- (978) 287-9350
- Enumerated
- Oct 17, 2005
- Record last updated
- Nov 16, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (978) 287-9358
- Medicaid IDs
- 1004840 VT
3127427 MA - Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 330 Baker Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Caitlin CeresiaAdult Health Nurse Practitioner1053866384
- Paige Fairbanks, PA-CPhysician Assistant1073447280
- Jesse Foote, M.D.Geriatric Medicine (Internal Medicine) Physician1932366465
Verify Thomas P. Kaegi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 79435Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% more Medicare Part D claims than the average internal medicine physician in 2024
6,227 Medicare Part D claims for 574 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 77 claims were for opioids.
Most prescribed
- Atorvastatin Calcium589 claims
- Lisinopril342 claims
- Simvastatin252 claims
- Losartan Potassium234 claims
- Amlodipine Besylate216 claims
- Levothyroxine Sodium209 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.
Thomas P. Kaegi among 6,825 internal medicine physician records in Massachusetts
Thomas P. Kaegi, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% 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, 88% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2020 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
44 internal medicine physician records list a practice address in Concord
They are 44 of the 1,078 NPPES records with a practice address in Concord, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Concord → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Paul D'Ambrosio, M.D.Concord, MA 017421033194048
- David Eldridge, MDConcord, MA 017421386622967
- Eric Hatton, MDConcord, MA 017421841287281
- Peter Hoenig, M.DConcord, MA 017421801855531
- Sandeep Jain, M.D.Concord, MA 017421417915562
- Barbara Peters, D.O.Concord, MA 017421609834563
- Betty Pomerleau, M.D.Concord, MA 017421811972821
- Marguerite Roach, M.D.Concord, MA 017421124087853
Common questions
What is Thomas P. Kaegi, M.D.'s NPI number?
Thomas P. Kaegi, M.D.'s National Provider Identifier (NPI) is 1578552121, issued on Oct 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas P. Kaegi, M.D. located?
The NPPES record lists a practice address at 330 Baker Ave, Concord, MA, 01742. Phone: (978) 287-9350. Providers update this record themselves, so call before visiting.
How can I verify Thomas P. Kaegi, M.D.'s license?
NPPES lists Massachusetts license number 79435, 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 Thomas P. Kaegi, M.D. prescribe under Medicare Part D?
In 2024, Thomas P. Kaegi, M.D. had 6,227 Medicare Part D claims for 574 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.