David E. Harnois, DC
- Medicare patients, 2026
- 54
- Hospital affiliations
- 1
- State license
- 1
- Year NPI issued
- 2006
- 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 David Harnois' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
David E. Harnois is a chiropractor in Lowell, Massachusetts
David Harnois practices at Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine.
David Harnois' NPI, 1801847876, was assigned on May 15, 2006. David Harnois holds Massachusetts license 893.
- NPI
- 1801847876NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800806332
- NPI enumeration date
- May 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 937-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
David E. Harnois practices at Lowell General Hospital in Lowell, Massachusetts
David Harnois' 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
David E. Harnois is affiliated with 1 site of care
David Harnois' primary practice is Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at David E. Harnois' practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Harnois practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lowell General Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Tufts Medicine and 6.2K+ hospitals, with verified contacts in the same login.
David E. Harnois is one of 854 chiropractors in Massachusetts
Chiropractor is David Harnois' primary specialty in the NPI Registry, under taxonomy code 111N00000X. David Harnois is licensed in Massachusetts.
Specialties and state licenses
- Chiropractor, MassachusettsPrimary
Chiropractors near David Harnois
Counts of chiropractors 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
David E. Harnois treated 54 Medicare patients in 2026, average age 74
CMS counts 54 Medicare patients who saw David Harnois in 2026. The largest group is 75 to 84, with 26 patients. 75% of them have arthritis, and 75% have high blood pressure. Their average risk score is 0.90, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Harnois' median patient age at 56, with 43% women.
David Harnois' Medicare patients by age, 2026
CMS leaves out age groups with fewer than 11 patients.
David Harnois' Medicare patients by sex, 2026
- Women3769%
- Men1731%
Chronic conditions among David Harnois' Medicare patients, 2026
- Arthritis75%
- High blood pressure75%
- High cholesterol74%
- Diabetes24%
- Anxiety22%
- Chronic kidney disease22%
- Mood disorders20%
Share of Medicare patients with each condition. A patient can have several.
David Harnois' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women43%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
How David E. Harnois takes part in Medicare
David Harnois accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
Sources for David E. Harnois'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 patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - 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) |
| 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 David E. Harnois
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is David E. Harnois' NPI number?
David E. Harnois' NPI number is 1801847876. It was assigned on May 15, 2006, and it is active in the NPI Registry.
What does David E. Harnois specialize in?
David E. Harnois is a chiropractor in Lowell, Massachusetts. The primary specialty in the NPI Registry is Chiropractor (taxonomy code 111N00000X).
Where does David E. Harnois practice?
David Harnois practices at 295 Varnum Avenue, Lowell, MA 01854. David Harnois' primary practice is Lowell General Hospital in Lowell, Massachusetts, part of Tufts Medicine.
What is David E. Harnois' office phone number?
The practice phone on file for David Harnois is (978) 937-6000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is David E. Harnois' email address?
Dmand AI checks professional and personal email addresses for David Harnois through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is David E. Harnois' medical license number?
David Harnois holds Massachusetts license 893.
Which hospitals is David E. Harnois affiliated with?
David Harnois practices at Lowell General Hospital in Lowell, Massachusetts.
Does David E. Harnois accept Medicare?
Yes. CMS lists David Harnois as accepting Medicare assignment.
How many Medicare patients does David E. Harnois see?
CMS counts 54 Medicare patients who saw David Harnois in 2026, with an average age of 74.
How long has David E. Harnois been practicing?
David Harnois graduated from medical school in 1982, 44 years ago.
What EHR does David E. Harnois' practice use?
Dmand AI tracks the EHR system at Lowell General Hospital. The vendor and product are available with a free Dmand AI account.
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