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Dr. Brooks J. Willar, MD
NPI1336633098PAC ID3971851262
- Part D claims, 2024
- 376
- Publications
- 2
- Hospital affiliations
- 5
- Industry payments
- $9,920
- Medical group
- 1
- Practice address
- 55 Lake N Ave, Worcester, MA 01605
- Practice phone
- Call (508) 334-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Umass Memorial Medical Group Inc
Worcester, Massachusetts
Find Dr. Willar's professional email, personal email and mobile number
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Dr. Brooks J. Willar is an internist in Worcester, Massachusetts
Dr. Willar practices at Umass Memorial Medical Group Inc in Worcester, Massachusetts.
Dr. Willar's NPI, 1336633098, was assigned on June 17, 2018. Dr. Willar graduated from University of Massachusetts Medical School in 2018. Dr. Willar holds Massachusetts license 276395.
NPI and contact details
- NPI
- 1336633098NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971851262
- NPI enumeration date
- June 17, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (508) 334-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brooks J. Willar practices at Umass Memorial Medical Group Inc in Worcester, Massachusetts
Dr. Willar's primary practice is Umass Memorial Medical Group Inc, at 55 Lake N Ave, Worcester, MA 01605 in Worcester County. The practice phone is (508) 334-1000.
- Umass Memorial Medical Group Inc55 Lake N Ave, Worcester, MA 01605 · Worcester CountyPhone(508) 334-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Brooks J. Willar is affiliated with 6 sites of care and 1 medical group
Dr. Willar's primary practice is Umass Memorial Medical Group Inc in Worcester, Massachusetts. Dr. Willar is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Willar to 4 more hospitals, each named with a free account.
Umass Memorial Medical Group IncPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Brooks J. Willar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Willar practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Umass Memorial Medical Group Inc | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brooks J. Willar is one of 5,528 internists in Massachusetts
Internal medicine is Dr. Willar's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Willar is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Dr. Willar
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. Brooks J. Willar's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Dr. Willar's median patient age at 75, with 43% women.
Dr. Willar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women43%
- Men57%
Source: Dmand AI Patient Panel Data
Dr. Brooks J. Willar wrote 376 Medicare Part D claims in 2024
In 2024, Dr. Willar wrote 376 Medicare Part D claims for 69 patients. 82% of them were for generic drugs. CMS names the drug for 301 of them, across 14 drugs with 11 or more claims each, at $333,242 in total drug cost. In 2023, CMS named 116 claims across 6 drugs.
Part D claims, 2024376
Drugs named by CMS14
Total drug cost$333,242
Part D patients69
Dr. Willar's Part D claims by kind of drug, 2024
- Generic307 claims82%
- Brand-name69 claims18%
Dr. Willar's most prescribed drugs by claims, 2024
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, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1162024: 301159%
Drugs named by CMS: 14 in 2024, 6 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Brooks J. Willar ranks in the 94th percentile for pacemaker insertion or repair in Medicare
Dr. Willar accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 64 procedures of pacemaker insertion or repair by Dr. Willar, more than 94% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Willar ranks in Medicare procedure volume
- Pacemaker insertion or repair
- 94th percentile64 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Brooks J. Willar has 2 publications on record
Dmand AI links 2 papers to Dr. Willar, published from 2021 to 2023. Dr. Willar's most frequent co-authors are Shahzad Shaefi, MBBS and Joseph Edward Tonna, MD.
Papers2
Years published2021 to 2023
Dr. Willar's most frequent co-authors
Recent publications by Dr. Willar
See who Dr. Willar researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Willar 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. Brooks J. Willar received $9,920 in industry payments from 2021 to 2025
CMS Open Payments shows 45 general payments to Dr. Willar from 6 drug and device companies from 2021 to 2025. Travel and lodging make up the largest share, 47% of the total. Boston Scientific Corporation paid the most, $5,343.
General payments to Dr. Willar by program year, 2021 to 2025
General payments to Dr. Willar by kind, 2021 to 2025
$9.9Kin total
- Travel and lodging$4,68147%
- Food and beverage$2,50825%
- Grants$2,00020%
- Education$7317%
Companies that paid Dr. Willar the most, 2021 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Brooks J. Willar graduated from University of Massachusetts Medical School
Dr. Willar graduated from University of Massachusetts Medical School in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Brooks J. Willar'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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)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)Doctors and Clinicians Utilization Data (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. Brooks J. Willar
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. Brooks J. Willar's NPI number?
Dr. Brooks J. Willar's NPI number is 1336633098. It was assigned on June 17, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Brooks J. Willar?
Dr. Brooks J. Willar is an internist in Worcester, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Brooks J. Willar practice?
Dr. Willar practices at 55 Lake N Ave, Worcester, MA 01605. Dr. Willar's primary practice is Umass Memorial Medical Group Inc in Worcester, Massachusetts. Dmand AI also links Dr. Willar to 4 hospitals.
What is Dr. Brooks J. Willar's office phone number?
The practice phone on file for Dr. Willar is (508) 334-1000.
What is Dr. Brooks J. Willar's medical license number?
Dr. Willar holds Massachusetts license 276395.
Which hospitals is Dr. Brooks J. Willar affiliated with?
Dr. Willar is affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Willar to 4 more hospitals.
What medical group is Dr. Brooks J. Willar part of?
Dr. Willar is linked to UMass Memorial Medical Group.
Does Dr. Brooks J. Willar accept Medicare?
Yes. CMS lists Dr. Willar as accepting Medicare assignment.
Where did Dr. Brooks J. Willar go to medical school?
Dr. Willar graduated from University of Massachusetts Medical School in 2018.
What drugs does Dr. Brooks J. Willar prescribe most?
In 2024 Medicare Part D data, Dr. Willar's most prescribed drugs by claims were Metoprolol Succinate, Rosuvastatin Calcium and Eliquis.
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Has Dr. Brooks J. Willar received payments from drug or device companies?
CMS Open Payments shows $9,920 in general payments to Dr. Willar from 6 companies from 2021 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. Brooks J. Willar been practicing?
Dr. Willar graduated from medical school in 2018, 8 years ago.
Does Dr. Brooks J. Willar do research?
Dmand AI links 2 publications to Dr. Willar, published from 2021 to 2023.
Who does Dr. Brooks J. Willar publish with?
Dr. Willar's most frequent co-authors are Shahzad Shaefi, MBBS (1 shared paper) and Joseph Edward Tonna, MD (1 shared paper).
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