Dr. Aaron S. Kesselheim, MD

  • Boston, MA
  • Internist
NPI1063478626PAC ID5890731368
Medicare services, 2024
60
Medicare patients, 2024
39
Part D claims, 2024
906
Publications
763
Hospital affiliations
3
Practice address
75 Francis Street, Boston, MA 02115
Practice phone
Call (617) 732-5500
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Brigham and Women's Hospital

Hospital · Boston, Massachusetts

See all 6 affiliations

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Dr. Aaron S. Kesselheim is an internist in Boston, Massachusetts

Dr. Kesselheim practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.

Dr. Kesselheim's NPI, 1063478626, was assigned on April 24, 2006. Dr. Kesselheim graduated from Perelman School of Med at the University of Pennsylvania in 2002. Dr. Kesselheim holds Massachusetts license 223102.

NPI and contact details
Medicare PAC ID
5890731368
NPI enumeration date
April 24, 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
50
Medical school graduation
2002

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Aaron S. Kesselheim practices at Brigham and Women's Hospital in Boston, Massachusetts

Dr. Kesselheim'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.

Source: Dmand AI Affiliation Data

Dr. Aaron S. Kesselheim is affiliated with 5 sites of care and 1 medical group

Dr. Kesselheim's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Kesselheim is also affiliated with Massachusetts General Hospital. The medical group on file is Brigham and Women's Hospital. Dmand AI also links Dr. Kesselheim to 1 more hospital, 1 home health agency and 1 hospital outpatient department, each named with a free account.

See all 6 affiliations for Dr. Kesselheim

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Aaron S. Kesselheim's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kesselheim practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Brigham and Women's HospitalAvailable with a free account
+4 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Aaron S. Kesselheim is one of 5,528 internists in Massachusetts

Internal medicine is Dr. Kesselheim's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Kesselheim is licensed in Massachusetts.

Specialties and state licenses

  • Internal medicine, MassachusettsPrimaryLicense 223102 · taxonomy 207R00000X

Internists near Dr. Kesselheim

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. Aaron S. Kesselheim billed Medicare for 60 services in 2024

CMS data shows 60 Medicare services from Dr. Kesselheim across 2 procedure codes in 2024, all of them office visits, for 39 Medicare patients. Medicare paid $3,823 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202460
Medicare patients39
Paid by Medicare$3,823
Procedure codes2

Dr. Kesselheim's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 642024: 606%

Dr. Kesselheim compared with the Massachusetts median for internists, 2024

  • Dr. Kesselheim
  • Massachusetts median
Medicare services
60vs 43186% below
Medicare patients
39vs 19480% below
Part D claims
610vs 40252% above

Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.

Dr. Kesselheim'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.

See all procedures by Dr. Kesselheim

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Aaron S. Kesselheim treated 39 Medicare patients in 2024, average age 73

CMS counts 39 Medicare patients who saw Dr. Kesselheim in 2024. The largest group is 65 to 74, with 17 patients. 69% of them have high blood pressure, and 62% have high cholesterol. 38% are also on Medicaid. Their average risk score is 1.78, 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. Kesselheim's median patient age at 72, with 38% women.

Medicare patients, 202439
Average age73
Average risk score1.78
Also on Medicaid38%

Dr. Kesselheim's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Kesselheim's Medicare patients by sex, 2024

  • Women1333%
  • Men2667%

Chronic conditions among Dr. Kesselheim's Medicare patients, 2024

  1. High blood pressure69%
  2. High cholesterol62%
  3. Ischemic heart disease46%
  4. Arthritis38%
  5. Diabetes33%
  6. Chronic kidney disease31%

Share of Medicare patients with each condition. A patient can have several.

Dr. Kesselheim's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 72

Patient panel by sex, all payers

  • Women38%
  • Men61%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Aaron S. Kesselheim wrote 906 Medicare Part D claims in 2024

In 2024, Dr. Kesselheim wrote 906 Medicare Part D claims for 78 patients. 90% of them were for generic drugs. CMS names the drug for 610 of them, across 25 drugs with 11 or more claims each, at $23,908 in total drug cost. In 2023, CMS named 670 claims across 27 drugs.

Part D claims, 2024906
Drugs named by CMS25
Total drug cost$23,908
Part D patients78

Dr. Kesselheim's Part D claims by kind of drug, 2024

  • Generic811 claims90%
  • Brand-name and other95 claims10%

Dr. Kesselheim'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. Kesselheim's Part D claims, 2024

  • Antibiotics1%12 of 906 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: 6702024: 6109%

Drugs named by CMS: 25 in 2024, 27 in 2023.

See all prescribing by Dr. Kesselheim

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. Aaron S. Kesselheim offers telehealth to Medicare patients

Dr. Kesselheim accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Kesselheim as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Aaron S. Kesselheim has 763 publications on record

Dmand AI links 763 papers to Dr. Kesselheim, published from 2010 to 2025. 2024 was the busiest year, with 44. The most frequent topics are United States Food and Drug Administration, Drug Approval and Drug Industry. Dr. Kesselheim has published most often in JAMA. Dr. Kesselheim's most frequent co-authors are Daniel Bruce Kramer, MD, MPH, Niteesh Kumar Choudhry, MD, PhD and Steven Woloshin, MD.

Papers763
Years published2010 to 2025

Dr. Kesselheim's papers by year, 2016 to 2025

Topics Dr. Kesselheim writes about most

  • United States Food and Drug Administration
  • Drug Approval
  • Drug Industry
  • Drug Costs
  • Drugs, Generic
  • Prescription Drugs
  • Patents as Topic
  • Pharmaceutical Preparations

Dr. Kesselheim's most frequent co-authors

Recent publications by Dr. Kesselheim

See all 763 publications and co-authors

See who Dr. Kesselheim researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Kesselheim works with, so you can find a warm path to the right internists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Aaron S. Kesselheim graduated from Perelman School of Med at the University of Pennsylvania

Dr. Kesselheim graduated from Perelman School of Med at the University of Pennsylvania in 2002.

  1. Medical schoolPerelman School of Med at the University of Pennsylvania

Source: Dmand AI Professional Profile Data

Sources for Dr. Aaron S. Kesselheim's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Aaron S. Kesselheim

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. Aaron S. Kesselheim's NPI number?

Dr. Aaron S. Kesselheim's NPI number is 1063478626. It was assigned on April 24, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Aaron S. Kesselheim?

Dr. Aaron S. Kesselheim is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).

Where does Dr. Aaron S. Kesselheim practice?

Dr. Kesselheim practices at 75 Francis Street, Boston, MA 02115. Dr. Kesselheim's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Kesselheim to 1 hospital, 1 home health agency and 1 hospital outpatient department.

What is Dr. Aaron S. Kesselheim's office phone number?

The practice phone on file for Dr. Kesselheim is (617) 732-5500.

What is Dr. Aaron S. Kesselheim's medical license number?

Dr. Kesselheim holds Massachusetts license 223102.

Which hospitals is Dr. Aaron S. Kesselheim affiliated with?

Dr. Kesselheim practices at Brigham and Women's Hospital in Boston, Massachusetts. Dr. Kesselheim is also affiliated with Massachusetts General Hospital. Dmand AI links Dr. Kesselheim to 1 more hospital.

What medical group is Dr. Aaron S. Kesselheim part of?

Dr. Kesselheim is linked to Brigham and Women's Hospital.

Does Dr. Aaron S. Kesselheim accept Medicare?

Yes. CMS data shows Dr. Kesselheim billed Medicare for 60 services in 2024, and Dr. Kesselheim accepts Medicare assignment.

Does Dr. Aaron S. Kesselheim offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Kesselheim as offering telehealth services.

How many Medicare patients does Dr. Aaron S. Kesselheim see?

CMS counts 39 Medicare patients who saw Dr. Kesselheim in 2024, with an average age of 73.

Show 6 more questionsShow fewer questions

What services does Dr. Aaron S. Kesselheim bill to Medicare?

In 2024, Dr. Kesselheim's most billed Medicare services were office visit, established patient (99214) and office visit, established patient (99213).

Where did Dr. Aaron S. Kesselheim go to medical school?

Dr. Kesselheim graduated from Perelman School of Med at the University of Pennsylvania in 2002.

What drugs does Dr. Aaron S. Kesselheim prescribe most?

In 2024 Medicare Part D data, Dr. Kesselheim's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Lisinopril.

How long has Dr. Aaron S. Kesselheim been practicing?

Dr. Kesselheim graduated from medical school in 2002, 24 years ago.

Does Dr. Aaron S. Kesselheim do research?

Dmand AI links 763 publications to Dr. Kesselheim, published from 2010 to 2025.

Who does Dr. Aaron S. Kesselheim publish with?

Dr. Kesselheim's most frequent co-authors are Daniel Bruce Kramer, MD, MPH (15 shared papers), Niteesh Kumar Choudhry, MD, PhD (14 shared papers) and Steven Woloshin, MD (14 shared papers).

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