J Intensive Care Med
CommunicationFamilyIntensive Care Units
Dr. Jeffrey L. Greenwald, MD
NPI1326023466PAC ID3173565249
- Medicare services, 2024
- 387
- Medicare patients, 2024
- 130
- Publications
- 38
- Hospital affiliations
- 2
- Industry payments
- $122
- 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. Greenwald'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. Jeffrey L. Greenwald is an internist in Boston, Massachusetts
Dr. Greenwald practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Greenwald's NPI, 1326023466, was assigned on December 13, 2005. Dr. Greenwald graduated from Harvard Medical School in 1994. Dr. Greenwald holds Massachusetts license 159405.
NPI and contact details
- NPI
- 1326023466NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3173565249
- NPI enumeration date
- December 13, 2005
- 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
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jeffrey L. Greenwald practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Greenwald'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. Jeffrey L. Greenwald is affiliated with 5 sites of care and 2 medical groups
Dr. Greenwald's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Greenwald is also affiliated with Salem Hospital. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Greenwald to 2 more group practices and clinics, 1 community health center and 1 medical group, each named with a free account.
Salem HospitalMassachusetts General Physicians Organization (MGPO)2 group practices and clinicsNames with a free account1 community health centerName with a free account1 medical groupName with a free account
See all 7 affiliations for Dr. GreenwaldSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Jeffrey L. Greenwald's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Greenwald practices, 5 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 |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Jeffrey L. Greenwald is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Greenwald's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Greenwald is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Greenwald
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. Jeffrey L. Greenwald billed Medicare for 387 services in 2024
CMS data shows 387 Medicare services from Dr. Greenwald across 5 procedure codes in 2024, for 130 Medicare patients. Medicare paid $30,891 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024387
Medicare patients130
Paid by Medicare$30,891
Procedure codes5
Dr. Greenwald's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4552024: 38715%
Dr. Greenwald compared with the Massachusetts median for internists, 2024
- Dr. Greenwald
- Massachusetts median
- Medicare services
- 387vs 43110% below
- Medicare patients
- 130vs 19433% below
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Greenwald'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. Greenwald?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Greenwald and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jeffrey L. Greenwald treated 130 Medicare patients in 2024, average age 74
CMS counts 130 Medicare patients who saw Dr. Greenwald in 2024. The largest group is 75 to 84, with 57 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 43% are also on Medicaid. Their average risk score is 2.77, 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. Greenwald's median patient age at 72, with 46% women.
Medicare patients, 2024130
Average age74
Average risk score2.77
Also on Medicaid43%
Dr. Greenwald's Medicare patients by age, 2024
Dr. Greenwald's Medicare patients by sex, 2024
- Women6248%
- Men6852%
Chronic conditions among Dr. Greenwald's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis64%
- Mood disorders58%
- Depression55%
- Ischemic heart disease54%
- Anxiety53%
- Chronic kidney disease52%
Share of Medicare patients with each condition. A patient can have several.
Dr. Greenwald'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
- Women46%
- Men53%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Jeffrey L. Greenwald takes part in Medicare
Dr. Greenwald 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. Jeffrey L. Greenwald has 38 publications on record
Dmand AI links 38 papers to Dr. Greenwald, published from 2012 to 2024. 2019 was the busiest year, with 4. The most frequent topics are Communication, Quality Improvement and Inpatients. Dr. Greenwald has published most often in J Hosp Med. Dr. Greenwald's most frequent co-authors are Juliet Christine Jacobsen, MD, Emily Loving Aaronson, MD and Denisa Gace, DO.
Papers38
Years published2012 to 2024
Dr. Greenwald's papers by year, 2014 to 2024
Topics Dr. Greenwald writes about most
- Communication
- Quality Improvement
- Inpatients
- Medication Reconciliation
- Palliative Care
- Advance Care Planning
- Continuity of Patient Care
- Emergency Service, Hospital
Dr. Greenwald's most frequent co-authors
- Juliet Christine Jacobsen, MD8 shared papers
- Emily Loving Aaronson, MD2 shared papers
- Denisa Gace, DO2 shared papers
Recent publications by Dr. Greenwald
CommunicationEmergency Service, HospitalFeasibility Studies
CurriculumFaculty, Medical
Disaster Med Public Health Prep
Disaster PlanningEmergency Service, HospitalHospitalists
One Hospital's Response to the Institute of Medicine Report, "Dying in America" (opens in a new tab)
J Pain Symptom Manage
Advance Care PlanningCommunicationHospitals
See who Dr. Greenwald researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Greenwald 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. Jeffrey L. Greenwald received $122 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Greenwald from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Teva Pharmaceuticals USA, Inc. paid the most, $122.
Companies that paid Dr. Greenwald the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jeffrey L. Greenwald graduated from Harvard Medical School
Dr. Greenwald graduated from Harvard Medical School in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jeffrey L. Greenwald'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) |
| 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. Jeffrey L. Greenwald
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. Jeffrey L. Greenwald's NPI number?
Dr. Jeffrey L. Greenwald's NPI number is 1326023466. It was assigned on December 13, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Jeffrey L. Greenwald?
Dr. Jeffrey L. Greenwald is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jeffrey L. Greenwald practice?
Dr. Greenwald practices at 55 Fruit Street, Boston, MA 02114. Dr. Greenwald's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Greenwald to 2 group practices and clinics, 1 community health center and 1 medical group.
What is Dr. Jeffrey L. Greenwald's office phone number?
The practice phone on file for Dr. Greenwald is (617) 726-2000.
What is Dr. Jeffrey L. Greenwald's medical license number?
Dr. Greenwald holds Massachusetts license 159405.
Which hospitals is Dr. Jeffrey L. Greenwald affiliated with?
Dr. Greenwald practices at Massachusetts General Hospital in Boston, Massachusetts. Dr. Greenwald is also affiliated with Salem Hospital.
What medical group is Dr. Jeffrey L. Greenwald part of?
Dr. Greenwald is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Greenwald to 1 more medical group.
Does Dr. Jeffrey L. Greenwald accept Medicare?
Yes. CMS data shows Dr. Greenwald billed Medicare for 387 services in 2024, and Dr. Greenwald accepts Medicare assignment.
How many Medicare patients does Dr. Jeffrey L. Greenwald see?
CMS counts 130 Medicare patients who saw Dr. Greenwald in 2024, with an average age of 74.
What services does Dr. Jeffrey L. Greenwald bill to Medicare?
In 2024, Dr. Greenwald's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99238).
Show 5 more questionsShow fewer questions
Where did Dr. Jeffrey L. Greenwald go to medical school?
Dr. Greenwald graduated from Harvard Medical School in 1994.
Has Dr. Jeffrey L. Greenwald received payments from drug or device companies?
CMS Open Payments shows $122 in general payments to Dr. Greenwald from 1 company from 2016 to 2016. The largest total came from Teva Pharmaceuticals USA, Inc.
How long has Dr. Jeffrey L. Greenwald been practicing?
Dr. Greenwald graduated from medical school in 1994, 32 years ago.
Does Dr. Jeffrey L. Greenwald do research?
Dmand AI links 38 publications to Dr. Greenwald, published from 2012 to 2024.
Who does Dr. Jeffrey L. Greenwald publish with?
Dr. Greenwald's most frequent co-authors are Juliet Christine Jacobsen, MD (8 shared papers), Emily Loving Aaronson, MD (2 shared papers) and Denisa Gace, DO (2 shared papers).
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