Dr. Daniel M. Merson, DO
- Part D claims, 2024
- 268
- MIPS score, 2024
- 82
- Hospital affiliations
- 1
- Industry payments
- $21
- Medical group
- 1
- Practice address
- 175 Fore River Pkwy, Portland, ME 04102
- Practice phone
- Call (207) 879-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northern Light Mercy Hospital
Portland, Maine
Find Dr. Merson's 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.
Dr. Daniel M. Merson is an internist in Portland, Maine
Dr. Merson practices at Northern Light Mercy Hospital in Portland, Maine.
Dr. Merson's NPI, 1982652129, was assigned on May 4, 2006. Dr. Merson graduated from Massachusetts College of Osteopathy in 1987. Dr. Merson holds Maine license ME1373.
- NPI
- 1982652129NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3173568540
- NPI enumeration date
- May 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (207) 879-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Daniel M. Merson practices at Northern Light Mercy Hospital in Portland, Maine
Dr. Merson's primary practice is Northern Light Mercy Hospital, at 175 Fore River Pkwy, Portland, ME 04102 in Cumberland County. The practice phone is (207) 879-3000.
- Northern Light Mercy Hospital175 Fore River Pkwy, Portland, ME 04102 · Cumberland CountyPhone(207) 879-3000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Daniel M. Merson is affiliated with 3 sites of care and 1 medical group
Dr. Merson's primary practice is Northern Light Mercy Hospital in Portland, Maine. Dr. Merson is also affiliated with Northern Light Mercy Hospital. The medical group on file is Northern Light Mercy Hospital. Dmand AI also links Dr. Merson to 1 more physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daniel M. Merson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northern Light Mercy Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel M. Merson is one of 572 internists in Maine
Internal medicine is Dr. Merson's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Merson is licensed in Maine.
Specialties and state licenses
- Internal medicine, MainePrimary
Internists near Dr. Merson
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. Daniel M. Merson's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Merson's median patient age at 69, with 41% women.
Dr. Merson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women41%
- Men57%
Source: Dmand AI Patient Panel Data
Dr. Daniel M. Merson wrote 268 Medicare Part D claims in 2024
In 2024, Dr. Merson wrote 268 Medicare Part D claims for 62 patients. 26% of them were for generic drugs. CMS names the drug for 130 of them, across 6 drugs with 11 or more claims each, at $123,702 in total drug cost.
Dr. Merson's Part D claims by kind of drug, 2024
- Generic69 claims26%
- Brand-name173 claims65%
- Other26 claims10%
Dr. Merson's 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.
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. Daniel M. Merson scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Merson for performance year 2024, reported as part of a group. Dr. Merson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Merson's MIPS scores, performance year 2024
- 82of 100Final score
- 60.7of 100Quality
- 91of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Daniel M. Merson received $21 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Merson from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $21.
Companies that paid Dr. Merson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Daniel M. Merson graduated from Massachusetts College of Osteopathy
Dr. Merson graduated from Massachusetts College of Osteopathy in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Daniel M. Merson'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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)Clinician Public Reporting: Overall MIPS Performance (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. Daniel M. Merson
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. Daniel M. Merson's NPI number?
Dr. Daniel M. Merson's NPI number is 1982652129. It was assigned on May 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel M. Merson?
Dr. Daniel M. Merson is an internist in Portland, Maine. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Daniel M. Merson practice?
Dr. Merson practices at 175 Fore River Pkwy, Portland, ME 04102. Dr. Merson's primary practice is Northern Light Mercy Hospital in Portland, Maine. Dmand AI also links Dr. Merson to 1 physician office.
What is Dr. Daniel M. Merson's office phone number?
The practice phone on file for Dr. Merson is (207) 879-3000.
What is Dr. Daniel M. Merson's medical license number?
Dr. Merson holds Maine license ME1373.
Which hospitals is Dr. Daniel M. Merson affiliated with?
Dr. Merson is affiliated with Northern Light Mercy Hospital.
What medical group is Dr. Daniel M. Merson part of?
Dr. Merson is linked to Northern Light Mercy Hospital.
Does Dr. Daniel M. Merson accept Medicare?
Yes. CMS lists Dr. Merson as accepting Medicare assignment.
What is Dr. Daniel M. Merson's MIPS score?
Dr. Merson's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
Where did Dr. Daniel M. Merson go to medical school?
Dr. Merson graduated from Massachusetts College of Osteopathy in 1987.
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What drugs does Dr. Daniel M. Merson prescribe most?
In 2024 Medicare Part D data, Dr. Merson's most prescribed drugs by claims were Jardiance, Trulicity and Tresiba Flextouch U-100.
Has Dr. Daniel M. Merson received payments from drug or device companies?
CMS Open Payments shows $21 in general payments to Dr. Merson from 1 company from 2025 to 2025. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Daniel M. Merson been practicing?
Dr. Merson graduated from medical school in 1987, 39 years ago.
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