Dr. David S. Fagan, MD
- Medicare services, 2024
- 1,909
- Medicare patients, 2024
- 754
- Part D claims, 2024
- 5,852
- Publications
- 2
- Hospital affiliations
- 2
- Practice address
- 101 Boulder Point Drive, Suite 1, Plymouth, NH 03264
- Practice phone
- Call (603) 536-3890
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mid-State Health Center - Plymouth (Boulder PT Dr)
FQHC - Main Site · Plymouth, New Hampshire
Find Dr. Fagan'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. David S. Fagan is an internist in Plymouth, New Hampshire
Dr. Fagan practices at Mid-State Health Center - Plymouth (Boulder PT Dr) in Plymouth, New Hampshire.
Dr. Fagan's NPI, 1841220423, was assigned on July 3, 2006. Dr. Fagan graduated from University of Maryland School of Medicine in 1989. Dr. Fagan holds New Hampshire license NH8707.
- NPI
- 1841220423NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0941118608
- NPI enumeration date
- July 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (603) 536-3890
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David S. Fagan practices at Mid-State Health Center - Plymouth (Boulder PT Dr) in Plymouth, New Hampshire
Dr. Fagan's primary practice is Mid-State Health Center - Plymouth (Boulder PT Dr), at 101 Boulder Point Drive, Suite 1, Plymouth, NH 03264 in Grafton County. The practice phone is (603) 536-3890.
- Mid-State Health Center - Plymouth (Boulder PT Dr)101 Boulder Point Drive, Suite 1, Plymouth, NH 03264 · Grafton CountyPhone(603) 536-3890
Source: Dmand AI Affiliation Data
Dr. David S. Fagan is affiliated with 4 sites of care and 1 medical group
Dr. Fagan's primary practice is Mid-State Health Center - Plymouth (Boulder PT Dr) in Plymouth, New Hampshire. Dr. Fagan is also affiliated with Speare Memorial Hospital. The medical group on file is Mid-State Health Center. Dmand AI also links Dr. Fagan to 1 more hospital and 1 home health agency, each named with a free account. Dr. Fagan's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David S. Fagan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fagan practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mid-State Health Center - Plymouth (Boulder PT Dr) | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David S. Fagan is one of 577 internists in New Hampshire
Internal medicine is Dr. Fagan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Fagan is licensed in New Hampshire.
Specialties and state licenses
- Internal medicine, New HampshirePrimary
Internists near Dr. Fagan
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. David S. Fagan billed Medicare for 1,909 services in 2024
CMS data shows 1,909 Medicare services from Dr. Fagan across 23 procedure codes in 2024, for 754 Medicare patients. Medicare paid $33,816 for them. Every service was in an office.
Dr. Fagan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 2,8642024: 1,21058%
- Tests and treatments
- 2023: 4342024: 30330%
- Imaging
- 2023: 6262024: 27856%
- Surgery
- 2023: 342024: 118247%
- Other services
- 2023: 652024: 0100%
Dr. Fagan compared with the New Hampshire median for internists, 2024
- Dr. Fagan
- New Hampshire median
- Medicare services
- 1,909vs 4304.4 times
- Medicare patients
- 754vs 2313.3 times
- Part D claims
- 5,159vs 17928.8 times
Medians across 583 internists in New Hampshire with Dmand AI profiles that report each measure.
Dr. Fagan's 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. Fagan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fagan and other internists in New Hampshire.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David S. Fagan treated 754 Medicare patients in 2024, average age 74
CMS counts 754 Medicare patients who saw Dr. Fagan in 2024. The largest group is 65 to 74, with 350 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 8% are also on Medicaid. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Fagan's median patient age at 62, with 51% women.
Dr. Fagan's Medicare patients by age, 2024
Dr. Fagan's Medicare patients by sex, 2024
- Women30340%
- Men45160%
Chronic conditions among Dr. Fagan's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis42%
- Tobacco use32%
- Ischemic heart disease26%
- Diabetes25%
- Atrial fibrillation21%
- Chronic kidney disease21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Fagan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David S. Fagan wrote 5,852 Medicare Part D claims in 2024
In 2024, Dr. Fagan wrote 5,852 Medicare Part D claims for 516 patients. 85% of them were for generic drugs. CMS names the drug for 5,159 of them, across 104 drugs with 11 or more claims each, at $411,221 in total drug cost. In 2023, CMS named 5,237 claims across 114 drugs.
Dr. Fagan's Part D claims by kind of drug, 2024
- Generic4,976 claims85%
- Brand-name821 claims14%
- Other55 claims1%
Dr. Fagan'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.
Drug classes CMS tracks in Dr. Fagan's Part D claims, 2024
- Opioids2%98 of 5,852 claims
- Antibiotics1%57 of 5,852 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: 5,2372024: 5,1591%
Drugs named by CMS: 104 in 2024, 114 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
How Dr. David S. Fagan takes part in Medicare
Dr. Fagan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. David S. Fagan has 2 publications on record
Dmand AI links 2 papers to Dr. Fagan, published from 2018 to 2024. Dr. Fagan's most frequent co-authors are Michael Thomas Harte, MD, Robert Katz, MD and Lorry G. Rubin, MD.
Dr. Fagan's most frequent co-authors
Recent publications by Dr. Fagan
J Can Acad Child Adolesc Psychiatry
See who Dr. Fagan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fagan works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David S. Fagan received $203 in industry payments from 2017 to 2025
CMS Open Payments shows 10 general payments to Dr. Fagan from 5 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 93% of the total. Abbvie Inc. paid the most, $93.
General payments to Dr. Fagan by program year, 2017 to 2025
General payments to Dr. Fagan by kind, 2017 to 2025
- Food and beverage$18893%
- Education$157%
Companies that paid Dr. Fagan the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David S. Fagan graduated from University of Maryland School of Medicine
Dr. Fagan graduated from University of Maryland School of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David S. Fagan'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. David S. Fagan
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. David S. Fagan's NPI number?
Dr. David S. Fagan's NPI number is 1841220423. It was assigned on July 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David S. Fagan?
Dr. David S. Fagan is an internist in Plymouth, New Hampshire. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. David S. Fagan practice?
Dr. Fagan practices at 101 Boulder Point Drive, Suite 1, Plymouth, NH 03264. Dr. Fagan's primary practice is Mid-State Health Center - Plymouth (Boulder PT Dr) in Plymouth, New Hampshire. Dmand AI also links Dr. Fagan to 1 hospital and 1 home health agency.
What is Dr. David S. Fagan's office phone number?
The practice phone on file for Dr. Fagan is (603) 536-3890.
What is Dr. David S. Fagan's medical license number?
Dr. Fagan holds New Hampshire license NH8707.
Which hospitals is Dr. David S. Fagan affiliated with?
Dr. Fagan is affiliated with Speare Memorial Hospital. Dmand AI links Dr. Fagan to 1 more hospital.
What medical group is Dr. David S. Fagan part of?
Dr. Fagan is linked to Mid-State Health Center.
Does Dr. David S. Fagan accept Medicare?
Yes. CMS data shows Dr. Fagan billed Medicare for 1,909 services in 2024, and Dr. Fagan accepts Medicare assignment.
How many Medicare patients does Dr. David S. Fagan see?
CMS counts 754 Medicare patients who saw Dr. Fagan in 2024, with an average age of 74.
What services does Dr. David S. Fagan bill to Medicare?
In 2024, Dr. Fagan's most billed Medicare services were lab and pathology test (85025), lab and pathology test (83036) and heart test or procedure (93005).
Show 6 more questionsShow fewer questions
Where did Dr. David S. Fagan go to medical school?
Dr. Fagan graduated from University of Maryland School of Medicine in 1989.
What drugs does Dr. David S. Fagan prescribe most?
In 2024 Medicare Part D data, Dr. Fagan's most prescribed drugs by claims were Atorvastatin Calcium, Lisinopril and Levothyroxine Sodium.
Has Dr. David S. Fagan received payments from drug or device companies?
CMS Open Payments shows $203 in general payments to Dr. Fagan from 5 companies from 2017 to 2025. The largest total came from Abbvie Inc.
How long has Dr. David S. Fagan been practicing?
Dr. Fagan graduated from medical school in 1989, 37 years ago.
Does Dr. David S. Fagan do research?
Dmand AI links 2 publications to Dr. Fagan, published from 2018 to 2024.
Who does Dr. David S. Fagan publish with?
Dr. Fagan's most frequent co-authors are Michael Thomas Harte, MD (1 shared paper), Robert Katz, MD (1 shared paper) and Lorry G. Rubin, MD (1 shared paper).
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