Dr. Jules Leonard Dienstag, MD
- Medicare services, 2019
- 18
- Part D claims, 2018
- 12
- Hospital affiliations
- 1
- Industry payments
- $255,154
- Medical groups
- 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. Dienstag'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. Jules Leonard Dienstag is an internist in Boston, Massachusetts
Dr. Dienstag practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Dienstag's NPI, 1710959390, was assigned on February 7, 2006. Dr. Dienstag graduated from Columbia University College of Physicians and Surgeons in 1972. Dr. Dienstag holds Massachusetts license 42401.
- NPI
- 1710959390NPI Registry (opens in a new tab)
- NPI enumeration date
- February 7, 2006
- NPI status
- Active
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 80
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Jules Leonard Dienstag practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Dienstag'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. Jules Leonard Dienstag is affiliated with 2 sites of care and 2 medical groups
Dr. Dienstag's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. The medical group on file is Massachusetts General Hospital. Dmand AI also links Dr. Dienstag to 1 more community health center and 1 medical group, each named with a free account. Dr. Dienstag's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jules Leonard Dienstag's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Dienstag practices, 2 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 |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jules Leonard Dienstag is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Dienstag's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Dienstag is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Dienstag
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. Jules Leonard Dienstag billed Medicare for 18 services in 2019
CMS data shows 18 Medicare services from Dr. Dienstag across 1 procedure code in 2019, all of them office visits. Medicare paid $1,590 for them. Every service was in an office.
Dr. Dienstag's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 152019: 1820%
Dr. Dienstag compared with the Massachusetts median for internists, 2019
- Dr. Dienstag
- Massachusetts median
- Medicare services
- 18vs 43196% below
- Part D claims
- 12vs 40297% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Dienstag's most billed Medicare procedure codes, 2019
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Dienstag and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jules Leonard Dienstag's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Dienstag's median patient age at 73, with 0% women.
Dr. Dienstag's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Jules Leonard Dienstag wrote 12 Medicare Part D claims in 2018
In 2018, Dr. Dienstag wrote 12 Medicare Part D claims. They cover 1 drug, with $13,136 in total drug cost. In 2017, CMS named 12 claims across 1 drug.
Dr. Dienstag's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2017 to 2018
- 2017
- 2018
- Claims for drugs CMS names
- 2017: 122018: 12No change
Drugs named by CMS: 1 in 2018, 1 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Jules Leonard Dienstag received $255,154 in industry payments from 2016 to 2024
CMS Open Payments shows 131 general payments to Dr. Dienstag from 6 drug and device companies from 2016 to 2024. Consulting fees make up the largest share, 89% of the total. Intercept Pharmaceuticals, Inc. paid the most, $129,675. It also lists 19 research payments totaling $43,004 from 2017 to 2025.
General payments to Dr. Dienstag by program year, 2016 to 2024
General payments to Dr. Dienstag by kind, 2016 to 2024
- Consulting fees$227,48689%
- Speaker and faculty fees$13,9615%
- Travel and lodging$12,8625%
- Food and beverage$8450%
Companies that paid Dr. Dienstag the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jules Leonard Dienstag graduated from Columbia University College of Physicians and Surgeons
Dr. Dienstag graduated from Columbia University College of Physicians and Surgeons in 1972.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jules Leonard Dienstag'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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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. Jules Leonard Dienstag
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. Jules Leonard Dienstag's NPI number?
Dr. Jules Leonard Dienstag's NPI number is 1710959390. It was assigned on February 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jules Leonard Dienstag?
Dr. Jules Leonard Dienstag is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jules Leonard Dienstag practice?
Dr. Dienstag practices at 55 Fruit Street, Boston, MA 02114. Dr. Dienstag's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Dienstag to 1 community health center and 1 medical group.
What is Dr. Jules Leonard Dienstag's office phone number?
The practice phone on file for Dr. Dienstag is (617) 726-2000.
What is Dr. Jules Leonard Dienstag's medical license number?
Dr. Dienstag holds Massachusetts license 42401.
Which hospitals is Dr. Jules Leonard Dienstag affiliated with?
Dr. Dienstag practices at Massachusetts General Hospital in Boston, Massachusetts.
What medical group is Dr. Jules Leonard Dienstag part of?
Dr. Dienstag is linked to Massachusetts General Hospital. Dmand AI links Dr. Dienstag to 1 more medical group.
Does Dr. Jules Leonard Dienstag accept Medicare?
Yes. CMS data shows Dr. Dienstag billed Medicare for 18 services in 2019.
What services does Dr. Jules Leonard Dienstag bill to Medicare?
In 2019, Dr. Dienstag's most billed Medicare services were office visit, established patient (99214).
Where did Dr. Jules Leonard Dienstag go to medical school?
Dr. Dienstag graduated from Columbia University College of Physicians and Surgeons in 1972.
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What drugs does Dr. Jules Leonard Dienstag prescribe most?
In 2018 Medicare Part D data, Dr. Dienstag's most prescribed drugs by claims were Viread.
Has Dr. Jules Leonard Dienstag received payments from drug or device companies?
CMS Open Payments shows $255,154 in general payments to Dr. Dienstag from 6 companies from 2016 to 2024. The largest total came from Intercept Pharmaceuticals, Inc.
How long has Dr. Jules Leonard Dienstag been practicing?
Dr. Dienstag graduated from medical school in 1972, 54 years ago.
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