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Dr. Jonathan E. Eisen, MD
NPI1396126686PAC ID0648579946
- Medicare services, 2024
- 255
- Medicare patients, 2024
- 130
- Part D claims, 2024
- 19
- Publications
- 1
- Hospital affiliations
- 2
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Eisen'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. Jonathan E. Eisen is an internist in Boston, Massachusetts
Dr. Eisen practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Eisen's NPI, 1396126686, was assigned on June 12, 2015. Dr. Eisen holds Massachusetts license 263228.
NPI and contact details
- NPI
- 1396126686NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0648579946
- NPI enumeration date
- June 12, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jonathan E. Eisen practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Eisen's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Jonathan E. Eisen is affiliated with 3 sites of care and 3 medical groups
Dr. Eisen's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Eisen is also affiliated with Tufts Medical Center. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Eisen to 2 more medical groups and 1 community health center, each named with a free account.
Tufts Medical CenterMassachusetts General Physicians Organization (MGPO)2 medical groupsNames with a free account1 community health centerName with a free account
See all 6 affiliations for Dr. EisenSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jonathan E. Eisen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Eisen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Jonathan E. Eisen is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Eisen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Eisen is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Eisen
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
5,528internists in Massachusetts1,712internists in Boston446internists at Massachusetts General Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jonathan E. Eisen billed Medicare for 255 services in 2024
CMS data shows 255 Medicare services from Dr. Eisen across 3 procedure codes in 2024, for 130 Medicare patients. Medicare paid $19,409 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024255
Medicare patients130
Paid by Medicare$19,409
Procedure codes3
Dr. Eisen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3212024: 25521%
Dr. Eisen compared with the Massachusetts median for internists, 2024
- Dr. Eisen
- Massachusetts median
- Medicare services
- 255vs 43141% below
- Medicare patients
- 130vs 19433% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Eisen'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. Eisen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Eisen and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonathan E. Eisen treated 130 Medicare patients in 2024, average age 76
CMS counts 130 Medicare patients who saw Dr. Eisen in 2024. The largest group is 75 to 84, with 37 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 42% are also on Medicaid. Their average risk score is 3.34, 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. Eisen's median patient age at 67, with 52% women.
Medicare patients, 2024130
Average age76
Average risk score3.34
Also on Medicaid42%
Dr. Eisen's Medicare patients by age, 2024
Dr. Eisen's Medicare patients by sex, 2024
- Women7054%
- Men6046%
Chronic conditions among Dr. Eisen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Mood disorders67%
- Depression64%
- Chronic kidney disease62%
- Heart failure58%
- Anxiety57%
- Ischemic heart disease57%
Share of Medicare patients with each condition. A patient can have several.
Dr. Eisen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women52%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonathan E. Eisen wrote 19 Medicare Part D claims in 2024
In 2024, Dr. Eisen wrote 19 Medicare Part D claims. 89% of them were for generic drugs.
Part D claims, 202419
Dr. Eisen's Part D claims by kind of drug, 2024
- Generic17 claims89%
- Brand-name and other2 claims11%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Jonathan E. Eisen takes part in Medicare
Dr. Eisen 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)
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Dr. Jonathan E. Eisen has 1 publication on record
Dmand AI links 1 paper to Dr. Eisen in 2020. Dr. Eisen's most frequent co-authors are Adam Marc Bernheim, MD, Brent P. Little, MD and Amita Sharma, MD.
Papers1
Dr. Eisen's most frequent co-authors
Recent publications by Dr. Eisen
See who Dr. Eisen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Eisen 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. Jonathan E. Eisen received $123 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Eisen from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Collegium Pharmaceutical, Inc. paid the most, $123.
Companies that paid Dr. Eisen the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Jonathan E. Eisen'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 (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) |
| 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. Jonathan E. Eisen
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. Jonathan E. Eisen's NPI number?
Dr. Jonathan E. Eisen's NPI number is 1396126686. It was assigned on June 12, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan E. Eisen?
Dr. Jonathan E. Eisen is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jonathan E. Eisen practice?
Dr. Eisen practices at 55 Fruit Street, Boston, MA 02114. Dr. Eisen's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Eisen to 2 medical groups and 1 community health center.
What is Dr. Jonathan E. Eisen's office phone number?
The practice phone on file for Dr. Eisen is (617) 726-2000.
What is Dr. Jonathan E. Eisen's medical license number?
Dr. Eisen holds Massachusetts license 263228.
Which hospitals is Dr. Jonathan E. Eisen affiliated with?
Dr. Eisen practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Eisen is also affiliated with Tufts Medical Center.
What medical group is Dr. Jonathan E. Eisen part of?
Dr. Eisen is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Eisen to 2 more medical groups.
Does Dr. Jonathan E. Eisen accept Medicare?
Yes. CMS data shows Dr. Eisen billed Medicare for 255 services in 2024, and Dr. Eisen accepts Medicare assignment.
How many Medicare patients does Dr. Jonathan E. Eisen see?
CMS counts 130 Medicare patients who saw Dr. Eisen in 2024, with an average age of 76.
What services does Dr. Jonathan E. Eisen bill to Medicare?
In 2024, Dr. Eisen's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99222) and hospital inpatient care (99239).
Show 4 more questionsShow fewer questions
Has Dr. Jonathan E. Eisen received payments from drug or device companies?
CMS Open Payments shows $123 in general payments to Dr. Eisen from 1 company from 2017 to 2017. The largest total came from Collegium Pharmaceutical, Inc.
How long has Dr. Jonathan E. Eisen been practicing?
Dr. Eisen graduated from medical school in 2015, 11 years ago.
Does Dr. Jonathan E. Eisen do research?
Dmand AI links 1 publication to Dr. Eisen.
Who does Dr. Jonathan E. Eisen publish with?
Dr. Eisen's most frequent co-authors are Adam Marc Bernheim, MD (1 shared paper), Brent P. Little, MD (1 shared paper) and Amita Sharma, MD (1 shared paper).
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