Dr. Justin Simmons, MD
- Medicare services, 2024
- 395
- Medicare patients, 2024
- 134
- MIPS score, 2024
- 84
- Hospital affiliations
- 2
- Industry payments
- $215
- 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. Simmons' professional email, personal email and mobile number
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Dr. Justin Simmons is a hematologist and oncologist in Boston, Massachusetts
Dr. Simmons practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Simmons' NPI, 1588807382, was assigned on April 9, 2009. Dr. Simmons graduated from New York University School of Medicine in 2009. Dr. Simmons holds Massachusetts license 259953.
- NPI
- 1588807382NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244480788
- NPI enumeration date
- April 9, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 732-5500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Justin Simmons practices at Brigham and Women's Hospital in Boston, Massachusetts
Dr. Simmons' 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. Justin Simmons is affiliated with 3 sites of care and 2 medical groups
Dr. Simmons' primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Simmons is also affiliated with Dana-Farber Cancer Institute. The medical group on file is Lahey Clinic. Dmand AI also links Dr. Simmons to 1 more hospital outpatient department and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Justin Simmons' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Simmons practices, 3 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 |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Justin Simmons is one of 429 hematologists and oncologists in Massachusetts
Hematology and oncology is Dr. Simmons' primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Simmons is licensed in Massachusetts.
Specialties and state licenses
- Hematology and oncology, MassachusettsPrimary
Hematologists and oncologists near Dr. Simmons
Counts of hematologists and oncologists 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. Justin Simmons billed Medicare for 395 services in 2024
CMS data shows 395 Medicare services from Dr. Simmons across 3 procedure codes in 2024, for 134 Medicare patients. Medicare paid $29,749 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Simmons' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3292024: 39520%
Dr. Simmons compared with the Massachusetts median for hematologists and oncologists, 2024
- Dr. Simmons
- Massachusetts median
- Medicare services
- 395vs 49520% below
- Medicare patients
- 134vs 20033% below
Medians across 415 hematologists and oncologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Simmons' 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.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Justin Simmons treated 134 Medicare patients in 2024, average age 73
CMS counts 134 Medicare patients who saw Dr. Simmons in 2024. The largest group is 65 to 74, with 62 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 2.65, 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. Simmons' median patient age at 68, with 57% women.
Dr. Simmons' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Simmons' Medicare patients by sex, 2024
- Women7153%
- Men6347%
Chronic conditions among Dr. Simmons' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer57%
- Anxiety51%
- Arthritis51%
- Mood disorders43%
- Depression36%
- Chronic kidney disease34%
Share of Medicare patients with each condition. A patient can have several.
Dr. Simmons' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Justin Simmons scored 84 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Simmons for performance year 2024, reported as part of a group. Dr. Simmons accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Simmons' MIPS scores, performance year 2024
- 84of 100Final score
- 65of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 69of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Justin Simmons received $215 in industry payments in 2016
CMS Open Payments shows 2 general payments to Dr. Simmons from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Endologix, Inc. paid the most, $215.
Companies that paid Dr. Simmons 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. Justin Simmons graduated from New York University School of Medicine
Dr. Simmons graduated from New York University School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Justin Simmons'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)Clinician Public Reporting: Overall MIPS Performance (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. Justin Simmons
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. Justin Simmons' NPI number?
Dr. Justin Simmons' NPI number is 1588807382. It was assigned on April 9, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Justin Simmons?
Dr. Justin Simmons is a hematologist and oncologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Justin Simmons practice?
Dr. Simmons practices at 75 Francis Street, Boston, MA 02115. Dr. Simmons' primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Simmons to 1 hospital outpatient department and 1 medical group.
What is Dr. Justin Simmons' office phone number?
The practice phone on file for Dr. Simmons is (617) 732-5500.
What is Dr. Justin Simmons' medical license number?
Dr. Simmons holds Massachusetts license 259953.
Which hospitals is Dr. Justin Simmons affiliated with?
Dr. Simmons practices at Brigham and Women's Hospital in Boston, Massachusetts. Dr. Simmons is also affiliated with Dana-Farber Cancer Institute.
What medical group is Dr. Justin Simmons part of?
Dr. Simmons is linked to Lahey Clinic. Dmand AI links Dr. Simmons to 1 more medical group.
Does Dr. Justin Simmons accept Medicare?
Yes. CMS data shows Dr. Simmons billed Medicare for 395 services in 2024, and Dr. Simmons accepts Medicare assignment.
What is Dr. Justin Simmons' MIPS score?
Dr. Simmons' MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Dr. Justin Simmons see?
CMS counts 134 Medicare patients who saw Dr. Simmons in 2024, with an average age of 73.
Show 4 more questionsShow fewer questions
What services does Dr. Justin Simmons bill to Medicare?
In 2024, Dr. Simmons' most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99239) and hospital inpatient care (99233).
Where did Dr. Justin Simmons go to medical school?
Dr. Simmons graduated from New York University School of Medicine in 2009.
Has Dr. Justin Simmons received payments from drug or device companies?
CMS Open Payments shows $215 in general payments to Dr. Simmons from 1 company from 2016 to 2016. The largest total came from Endologix, Inc.
How long has Dr. Justin Simmons been practicing?
Dr. Simmons graduated from medical school in 2009, 17 years ago.
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