Clinical MedicineCurriculumEducation, Medical, Undergraduate
Dr. John E. Butter, MD
NPI1629037064PAC ID9830226091
- Medicare services, 2024
- 847
- Medicare patients, 2024
- 285
- Part D claims, 2024
- 3,833
- Publications
- 3
- Hospital affiliations
- 6
- Practice address
- 75 Francis Street, Boston, MA 02115
- Practice phone
- Call (617) 732-5500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Butter'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. John E. Butter is an internist in Boston, Massachusetts
Dr. Butter practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Butter's NPI, 1629037064, was assigned on March 23, 2006. Dr. Butter graduated from Northwestern University Feinberg Medical School in 1991. Dr. Butter holds Massachusetts license 262483.
NPI and contact details
- NPI
- 1629037064NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830226091
- NPI enumeration date
- March 23, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 732-5500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John E. Butter practices at Brigham and Women's Hospital in Boston, Massachusetts
Dr. Butter's primary practice is Brigham and Women's Hospital, at 75 Francis Street, Boston, MA 02115 in Suffolk County. The practice phone is (617) 732-5500.
- Brigham and Women's Hospital75 Francis Street, Boston, MA 02115 · Suffolk CountyPhone(617) 732-5500
Source: Dmand AI Affiliation Data
Dr. John E. Butter is affiliated with 12 sites of care and 5 medical groups
Dr. Butter's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Butter is also affiliated with Massachusetts General Hospital. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Butter to 4 more hospitals, 4 group practices and clinics, 4 medical groups, 1 home health agency and 1 hospital outpatient department, each named with a free account.
Massachusetts General HospitalNorthwestern Medical Faculty Foundation4 hospitalsNames with a free account4 group practices and clinicsNames with a free account4 medical groupsNames with a free account1 home health agencyName with a free account1 hospital outpatient departmentName with a free account
See all 17 affiliations for Dr. ButterSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John E. Butter's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Butter practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Brigham and Women's Hospital | Available with a free account |
| +11 more sites and 4 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. John E. Butter is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Butter's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. Butter's licenses on file in 2 states: Massachusetts and Illinois.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
- Illinois license
Internists near Dr. Butter
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
5,528internists in Massachusetts1,712internists in Boston299internists at Brigham and Women's Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John E. Butter billed Medicare for 847 services in 2024
CMS data shows 847 Medicare services from Dr. Butter across 9 procedure codes in 2024, for 285 Medicare patients. Medicare paid $38,103 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024847
Medicare patients285
Paid by Medicare$38,103
Procedure codes9
Dr. Butter's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6182024: 5688%
- Other services
- 2023: 02024: 279
Dr. Butter compared with the Massachusetts median for internists, 2024
- Dr. Butter
- Massachusetts median
- Medicare services
- 847vs 43197% above
- Medicare patients
- 285vs 19447% above
- Part D claims
- 3,228vs 4028.0 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Butter'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. Butter?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Butter and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John E. Butter treated 285 Medicare patients in 2024, average age 76
CMS counts 285 Medicare patients who saw Dr. Butter in 2024. The largest group is 75 to 84, with 132 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 8% are also on Medicaid. Their average risk score is 1.34, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Butter's median patient age at 74, with 45% women.
Medicare patients, 2024285
Average age76
Average risk score1.34
Also on Medicaid8%
Dr. Butter's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Butter's Medicare patients by sex, 2024
- Women13347%
- Men15253%
Chronic conditions among Dr. Butter's Medicare patients, 2024
- High cholesterol75%
- High blood pressure69%
- Arthritis45%
- Anxiety25%
- Ischemic heart disease25%
- Mood disorders25%
- Chronic kidney disease24%
- Depression24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Butter's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women45%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John E. Butter wrote 3,833 Medicare Part D claims in 2024
In 2024, Dr. Butter wrote 3,833 Medicare Part D claims for 383 patients. 89% of them were for generic drugs. CMS names the drug for 3,228 of them, across 67 drugs with 11 or more claims each, at $270,224 in total drug cost. In 2023, CMS named 2,877 claims across 68 drugs.
Part D claims, 20243,833
Drugs named by CMS67
Total drug cost$270,224
Part D patients383
Dr. Butter's Part D claims by kind of drug, 2024
- Generic3,396 claims89%
- Brand-name and other437 claims11%
Dr. Butter'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. Butter's Part D claims, 2024
- Opioids1%55 of 3,833 claims
- Antibiotics2%66 of 3,833 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: 2,8772024: 3,22812%
Drugs named by CMS: 67 in 2024, 68 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. John E. Butter offers telehealth to Medicare patients
Dr. Butter accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Butter as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John E. Butter has 3 publications on record
Dmand AI links 3 papers to Dr. Butter in 2012. The most frequent topics are Curriculum. Dr. Butter's most frequent co-authors are Jeffrey H. Barsuk, MD, Diane B. Wayne, MD and Heather L. Heiman, MD.
Papers3
Topics Dr. Butter writes about most
- Curriculum
Dr. Butter's most frequent co-authors
- Jeffrey H. Barsuk, MD2 shared papers
- Diane B. Wayne, MD2 shared papers
- Heather L. Heiman, MD1 shared paper
Recent publications by Dr. Butter
Simul Healthc
Clinical CompetenceCurriculumEducation, Medical, Graduate
See who Dr. Butter researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Butter 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. John E. Butter received $23 in industry payments in 2025
CMS Open Payments shows 1 general payment to Dr. Butter from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Recor Medical Inc paid the most, $23.
Companies that paid Dr. Butter 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. John E. Butter graduated from Northwestern University Feinberg Medical School
Dr. Butter graduated from Northwestern University Feinberg Medical School in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John E. Butter'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) |
| 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. John E. Butter
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. John E. Butter's NPI number?
Dr. John E. Butter's NPI number is 1629037064. It was assigned on March 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John E. Butter?
Dr. John E. Butter is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. John E. Butter practice?
Dr. Butter practices at 75 Francis Street, Boston, MA 02115. Dr. Butter's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Butter to 4 hospitals, 4 group practices and clinics, 4 medical groups, 1 home health agency and 1 hospital outpatient department.
What is Dr. John E. Butter's office phone number?
The practice phone on file for Dr. Butter is (617) 732-5500.
What is Dr. John E. Butter's medical license number?
Dr. Butter holds Massachusetts license 262483, one of the licenses on file in 2 states.
Which states has Dr. John E. Butter been licensed in?
Dmand AI has state licenses on file for Dr. Butter in Massachusetts and Illinois.
Which hospitals is Dr. John E. Butter affiliated with?
Dr. Butter practices at Brigham and Women's Hospital in Boston, Massachusetts. Dr. Butter is also affiliated with Massachusetts General Hospital. Dmand AI links Dr. Butter to 4 more hospitals.
What medical group is Dr. John E. Butter part of?
Dr. Butter is linked to Northwestern Medical Faculty Foundation. Dmand AI links Dr. Butter to 4 more medical groups.
Does Dr. John E. Butter accept Medicare?
Yes. CMS data shows Dr. Butter billed Medicare for 847 services in 2024, and Dr. Butter accepts Medicare assignment.
Does Dr. John E. Butter offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Butter as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. John E. Butter see?
CMS counts 285 Medicare patients who saw Dr. Butter in 2024, with an average age of 76.
What services does Dr. John E. Butter bill to Medicare?
In 2024, Dr. Butter's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and medicare service (G2211).
Where did Dr. John E. Butter go to medical school?
Dr. Butter graduated from Northwestern University Feinberg Medical School in 1991.
What drugs does Dr. John E. Butter prescribe most?
In 2024 Medicare Part D data, Dr. Butter's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Has Dr. John E. Butter received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Dr. Butter from 1 company from 2025 to 2025. The largest total came from Recor Medical Inc.
How long has Dr. John E. Butter been practicing?
Dr. Butter graduated from medical school in 1991, 35 years ago.
Does Dr. John E. Butter do research?
Dmand AI links 3 publications to Dr. Butter.
Who does Dr. John E. Butter publish with?
Dr. Butter's most frequent co-authors are Jeffrey H. Barsuk, MD (2 shared papers), Diane B. Wayne, MD (2 shared papers) and Heather L. Heiman, MD (1 shared paper).
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