Dr. Matthew Gilbert Oser, MD, PhD
- Medicare services, 2024
- 68
- Medicare patients, 2024
- 22
- MIPS score, 2024
- 84
- Hospital affiliations
- 2
- Industry payments
- $41,935
- 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. Oser's professional email, personal email and mobile number
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Dr. Matthew Gilbert Oser is a medical oncologist in Boston, Massachusetts
Dr. Oser practices at Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Oser's NPI, 1720373772, was assigned on June 16, 2011. Dr. Oser graduated from Albert Einstein College of Medicine of Yeshiva University in 2011. Dr. Oser holds Massachusetts license 258253.
- NPI
- 1720373772NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082858154
- NPI enumeration date
- June 16, 2011
- 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
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Matthew Gilbert Oser practices at Brigham and Women's Hospital in Boston, Massachusetts
Dr. Oser'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.
- Brigham and Women's Hospital75 Francis Street, Boston, MA 02115 · Suffolk CountyPhone(617) 732-5500
Source: Dmand AI Affiliation Data
Dr. Matthew Gilbert Oser is affiliated with 3 sites of care and 1 medical group
Dr. Oser's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dr. Oser is also affiliated with Dana-Farber Cancer Institute. The medical group on file is Binney Medical Group. Dmand AI also links Dr. Oser to 1 more hospital outpatient department, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Matthew Gilbert Oser's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oser 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 affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Matthew Gilbert Oser is one of 290 medical oncologists in Massachusetts
Medical oncology is Dr. Oser's primary specialty in the NPI Registry, under taxonomy code 207RX0202X. Dr. Oser is licensed in Massachusetts.
Specialties and state licenses
- Medical oncology, MassachusettsPrimary
Medical oncologists near Dr. Oser
Counts of medical 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. Matthew Gilbert Oser billed Medicare for 68 services in 2024
CMS data shows 68 Medicare services from Dr. Oser across 2 procedure codes in 2024, for 22 Medicare patients. Medicare paid $5,118 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Oser's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 282024: 68143%
Dr. Oser compared with the Massachusetts median for medical oncologists, 2024
- Dr. Oser
- Massachusetts median
- Medicare services
- 68vs 26074% below
- Medicare patients
- 22vs 10980% below
Medians across 259 medical oncologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Oser'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oser and other medical oncologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Matthew Gilbert Oser treated 22 Medicare patients in 2024, average age 73
CMS counts 22 Medicare patients who saw Dr. Oser in 2024. 75% of them have high blood pressure, and 68% have high cholesterol. Their average risk score is 2.06, 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. Oser's median patient age at 55, with 22% women.
Chronic conditions among Dr. Oser's Medicare patients, 2024
- High blood pressure75%
- High cholesterol68%
- Cancer64%
- Diabetes50%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oser's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women22%
- Men78%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Matthew Gilbert Oser 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. Oser for performance year 2024, reported as part of a group. Dr. Oser accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Oser's 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. Matthew Gilbert Oser received $41,935 in industry payments from 2019 to 2024
CMS Open Payments shows 13 general payments to Dr. Oser from 5 drug and device companies from 2019 to 2024. Grants make up the largest share, 88% of the total. Genentech, Inc. paid the most, $38,580. It also lists 1 research payment totaling $2,700 in 2019.
General payments to Dr. Oser by program year, 2019 to 2024
General payments to Dr. Oser by kind, 2019 to 2024
- Grants$36,93288%
- Consulting fees$3,3958%
- Travel and lodging$9792%
- Food and beverage$6302%
Companies that paid Dr. Oser the most, 2019 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Matthew Gilbert Oser graduated from Albert Einstein College of Medicine of Yeshiva University
Dr. Oser graduated from Albert Einstein College of Medicine of Yeshiva University in 2011.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Matthew Gilbert Oser'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. Matthew Gilbert Oser
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What is Dr. Matthew Gilbert Oser's NPI number?
Dr. Matthew Gilbert Oser's NPI number is 1720373772. It was assigned on June 16, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Matthew Gilbert Oser?
Dr. Matthew Gilbert Oser is a medical oncologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Medical Oncology Physician (taxonomy code 207RX0202X).
Where does Dr. Matthew Gilbert Oser practice?
Dr. Oser practices at 75 Francis Street, Boston, MA 02115. Dr. Oser's primary practice is Brigham and Women's Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Oser to 1 hospital outpatient department.
What is Dr. Matthew Gilbert Oser's office phone number?
The practice phone on file for Dr. Oser is (617) 732-5500.
What is Dr. Matthew Gilbert Oser's medical license number?
Dr. Oser holds Massachusetts license 258253.
Which hospitals is Dr. Matthew Gilbert Oser affiliated with?
Dr. Oser practices at Brigham and Women's Hospital in Boston, Massachusetts. Dr. Oser is also affiliated with Dana-Farber Cancer Institute.
What medical group is Dr. Matthew Gilbert Oser part of?
Dr. Oser is linked to Binney Medical Group.
Does Dr. Matthew Gilbert Oser accept Medicare?
Yes. CMS data shows Dr. Oser billed Medicare for 68 services in 2024, and Dr. Oser accepts Medicare assignment.
What is Dr. Matthew Gilbert Oser's MIPS score?
Dr. Oser's MIPS final score for performance year 2024 is 84 out of 100, reported as part of a group.
How many Medicare patients does Dr. Matthew Gilbert Oser see?
CMS counts 22 Medicare patients who saw Dr. Oser in 2024, with an average age of 73.
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What services does Dr. Matthew Gilbert Oser bill to Medicare?
In 2024, Dr. Oser's most billed Medicare services were hospital inpatient care (99232) and hospital inpatient care (99222).
Where did Dr. Matthew Gilbert Oser go to medical school?
Dr. Oser graduated from Albert Einstein College of Medicine of Yeshiva University in 2011.
Has Dr. Matthew Gilbert Oser received payments from drug or device companies?
CMS Open Payments shows $41,935 in general payments to Dr. Oser from 5 companies from 2019 to 2024. The largest total came from Genentech, Inc.
How long has Dr. Matthew Gilbert Oser been practicing?
Dr. Oser graduated from medical school in 2011, 15 years ago.
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