Dr. Michael G. Bertos, MD
- Medicare services, 2024
- 2,365
- Medicare patients, 2024
- 952
- Part D claims, 2024
- 32,526
- Hospital affiliations
- 5
- Industry payments
- $544
- Practice address
- 295 Varnum Avenue, Lowell, MA 01854
- Practice phone
- Call (978) 937-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Bertos' professional email, personal email and mobile number
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Dr. Michael G. Bertos is an internist in Lowell, Massachusetts
Dr. Bertos practices at Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine.
Dr. Bertos' NPI, 1043245145, was assigned on July 11, 2006. Dr. Bertos graduated from Boston University School of Medicine in 1997. Dr. Bertos holds Massachusetts license 160611.
- NPI
- 1043245145NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799855128
- NPI enumeration date
- July 11, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (978) 937-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael G. Bertos practices at Lowell General Hospital in Lowell, Massachusetts
Dr. Bertos' primary practice is Lowell General Hospital, at 295 Varnum Avenue, Lowell, MA 01854 in Middlesex County. The practice phone is (978) 937-6000.
- Lowell General Hospital295 Varnum Avenue, Lowell, MA 01854 · Middlesex CountyPhone(978) 937-6000
Source: Dmand AI Affiliation Data
Dr. Michael G. Bertos is affiliated with 17 sites of care and 2 medical groups
Dr. Bertos' primary practice is Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine. Dr. Bertos is also affiliated with Beth Israel Deaconess Medical Center. The medical group on file is Lowell General Hospital. Dmand AI also links Dr. Bertos to 3 more hospitals, 5 home health agencies, 3 skilled nursing facilities, 2 group practices and clinics, 2 hospices and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael G. Bertos' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bertos practices, 17 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lowell General Hospital | Available with a free account |
| +16 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael G. Bertos is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Bertos' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Bertos is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Bertos
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael G. Bertos billed Medicare for 2,365 services in 2024
CMS data shows 2,365 Medicare services from Dr. Bertos across 15 procedure codes in 2024, for 952 Medicare patients. Medicare paid $210,181 for them.
Dr. Bertos' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,7582024: 1,8837%
- Other services
- 2023: 1162024: 283144%
- Tests and treatments
- 2023: 1092024: 19983%
Where Dr. Bertos' Medicare services took place, 2024
- In an office1,27554%
- In a facility1,09046%
Dr. Bertos compared with the Massachusetts median for internists, 2024
- Dr. Bertos
- Massachusetts median
- Medicare services
- 2,365vs 4315.5 times
- Medicare patients
- 952vs 1944.9 times
- Part D claims
- 31,563vs 40278.5 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Bertos' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Bertos?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Bertos and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael G. Bertos treated 952 Medicare patients in 2024, average age 78
CMS counts 952 Medicare patients who saw Dr. Bertos in 2024. The largest group is 75 to 84, with 343 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 38% are also on Medicaid. Their average risk score is 2.00, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Bertos' median patient age at 68, with 46% women.
Dr. Bertos' Medicare patients by age, 2024
Dr. Bertos' Medicare patients by sex, 2024
- Women48751%
- Men46549%
Chronic conditions among Dr. Bertos' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Anxiety53%
- Chronic kidney disease53%
- Mood disorders53%
- Depression51%
- Arthritis50%
- Heart failure50%
Share of Medicare patients with each condition. A patient can have several.
Dr. Bertos' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women46%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael G. Bertos wrote 32,526 Medicare Part D claims in 2024
In 2024, Dr. Bertos wrote 32,526 Medicare Part D claims for 1,466 patients. 83% of them were for generic drugs. CMS names the drug for 31,563 of them, across 293 drugs with 11 or more claims each, at $2,835,904 in total drug cost. In 2023, CMS named 36,134 claims across 290 drugs.
Dr. Bertos' Part D claims by kind of drug, 2024
- Generic27,064 claims83%
- Brand-name5,348 claims16%
- Other114 claims0%
Dr. Bertos' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Bertos' Part D claims, 2024
- Opioids1%358 of 32,526 claims
- Antibiotics3%927 of 32,526 claims
- Antipsychotics, patients 65 and over3%1,027 of 32,526 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 36,1342024: 31,56313%
Drugs named by CMS: 293 in 2024, 290 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Michael G. Bertos offers telehealth to Medicare patients
Dr. Bertos accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Bertos as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Michael G. Bertos received $544 in industry payments from 2016 to 2025
CMS Open Payments shows 27 general payments to Dr. Bertos from 11 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 86% of the total. Pfizer Inc. paid the most, $195.
General payments to Dr. Bertos by program year, 2016 to 2025
General payments to Dr. Bertos by kind, 2016 to 2025
- Food and beverage$46986%
- Education$7514%
Companies that paid Dr. Bertos the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael G. Bertos graduated from Boston University School of Medicine
Dr. Bertos graduated from Boston University School of Medicine in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael G. Bertos's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael G. Bertos
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael G. Bertos' NPI number?
Dr. Michael G. Bertos' NPI number is 1043245145. It was assigned on July 11, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael G. Bertos?
Dr. Michael G. Bertos is an internist in Lowell, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michael G. Bertos practice?
Dr. Bertos practices at 295 Varnum Avenue, Lowell, MA 01854. Dr. Bertos' primary practice is Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine. Dmand AI also links Dr. Bertos to 3 hospitals, 5 home health agencies, 3 skilled nursing facilities, 2 group practices and clinics, 2 hospices and 1 medical group.
What is Dr. Michael G. Bertos' office phone number?
The practice phone on file for Dr. Bertos is (978) 937-6000.
What is Dr. Michael G. Bertos' medical license number?
Dr. Bertos holds Massachusetts license 160611.
Which hospitals is Dr. Michael G. Bertos affiliated with?
Dr. Bertos practices at Lowell General Hospital in Lowell, Massachusetts. Dr. Bertos is also affiliated with Beth Israel Deaconess Medical Center. Dmand AI links Dr. Bertos to 3 more hospitals.
What medical group is Dr. Michael G. Bertos part of?
Dr. Bertos is linked to Lowell General Hospital. Dmand AI links Dr. Bertos to 1 more medical group.
Does Dr. Michael G. Bertos accept Medicare?
Yes. CMS data shows Dr. Bertos billed Medicare for 2,365 services in 2024, and Dr. Bertos accepts Medicare assignment.
Does Dr. Michael G. Bertos offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Bertos as offering telehealth services.
How many Medicare patients does Dr. Michael G. Bertos see?
CMS counts 952 Medicare patients who saw Dr. Bertos in 2024, with an average age of 78.
Show 5 more questionsShow fewer questions
What services does Dr. Michael G. Bertos bill to Medicare?
In 2024, Dr. Bertos' most billed Medicare services were office visit, established patient (99214), nursing facility care (99306) and nursing facility care (99309).
Where did Dr. Michael G. Bertos go to medical school?
Dr. Bertos graduated from Boston University School of Medicine in 1997.
What drugs does Dr. Michael G. Bertos prescribe most?
In 2024 Medicare Part D data, Dr. Bertos' most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Furosemide.
Has Dr. Michael G. Bertos received payments from drug or device companies?
CMS Open Payments shows $544 in general payments to Dr. Bertos from 11 companies from 2016 to 2025. The largest total came from Pfizer Inc.
How long has Dr. Michael G. Bertos been practicing?
Dr. Bertos graduated from medical school in 1997, 29 years ago.
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