Michael Bertos, M.D.
Internal Medicine Physician · N Chelmsford, MA
Michael Bertos, M.D. is an internal medicine physician with a practice address in N Chelmsford, Massachusetts, and NPI 1043245145, issued on Jul 11, 2006. Check the license (Massachusetts 160611, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Michael Bertos
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 160611 MA
Self-reported in NPPES; status is on the state search - Practice location
- 20 Research PL, N Chelmsford, MA 01863
- Phone
- (978) 459-2152
- Enumerated
- Jul 11, 2006
- Entity
- Type 1 · individual
Also registered at 20 Research PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Judith Bain, NPFamily Nurse Practitioner1609952035
- Louis Bresnick, M.D.Internal Medicine Physician1205861390
- Jayme Cerullo, NPFamily Nurse Practitioner1689711871
- Kathleen Cullen-Lutter, RN/NMAdvanced Practice Midwife1588096267
- Minerva Domingo, MDSpecialist1639170210
- Roula Johnstone, ACNP-BCAcute Care Nurse Practitioner1598907271
Verify Michael Bertos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 160611Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
11.7 times the Medicare Part D claims of the average internal medicine physician in 2024
32,526 Medicare Part D claims for 1,466 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 358 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,605 claims
- Levothyroxine Sodium1,030 claims
- Furosemide956 claims
- Amlodipine Besylate897 claims
- Eliquis887 claims
- Trazodone Hcl703 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: $16.88
1 payment, mostly food and beverage; the largest payer was Inspire Medical Systems, Inc.. The 65,274 providers of this specialty with any payment received $2,536.66 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.
One hospital or facility affiliation
- Lgh Professional Services LLCNorth Chelmsford, MA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
3 internal medicine physician records list a N Chelmsford practice address
They are 3 of the 66 NPPES records with a N Chelmsford practice address, and 7,865 internal medicine physician records in Massachusetts.
All 3 in N Chelmsford → All 7,865 in Massachusetts → Every provider in N Chelmsford →
Other internal medicine physician records in Massachusetts
- Nawal Aamir, MDWorcester, MA1588248926
- Zainab AbbasWorcester, MA1609028000
- Nooshin Abbasi, MD MPHNewton, MA1831888353
- Lauren Abbate, MDBoston, MA1922099621
- Bassima Abdallah, MDBoston, MA1912327305
- Samah Abdallah, MDBrighton, MA1730814971
- Omar Abdel-Wahab, M.D.Boston, MA1023042777
- Salah Abdelgadir, MDBoston, MA1891280954
- Mahmoud Abdelghany, M.D.Springfield, MA1134479629
- Mohab AbdelhalimBoston, MA1871388496
Common questions
What is Michael Bertos, M.D.'s NPI number?
Michael Bertos, M.D.'s National Provider Identifier (NPI) is 1043245145, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael Bertos, M.D. located?
The NPPES record lists a practice address at 20 Research PL, N Chelmsford, MA, 01863. Phone: (978) 459-2152. Providers update this record themselves, so call before visiting.
How can I verify Michael Bertos, M.D.'s license?
NPPES lists Massachusetts license number 160611, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://www.mass.gov/orgs/board-of-registration-in-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Bertos, M.D. prescribe under Medicare Part D?
In 2024, Michael Bertos, M.D. had 32,526 Medicare Part D claims for 1,466 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.