William D. Kasimer
- Medicare services, 2024
- 4,381
- Medicare patients, 2024
- 1,464
- MIPS score, 2024
- 90
- Hospital affiliations
- 3
- Industry payments
- $292
- Practice address
- 55 Fogg Road, South Weymouth, MA 02190
- Practice phone
- Call (781) 340-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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William D. Kasimer is a pathologist in South Weymouth, Massachusetts
William Kasimer practices at South Shore Hospital in South Weymouth, Massachusetts, part of South Shore Health System.
William Kasimer's NPI, 1265485288, was assigned on May 19, 2006. William Kasimer graduated from University of Pittsburgh School of Medicine in 1984. William Kasimer holds Massachusetts license 60294.
- NPI
- 1265485288NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7517939978
- NPI enumeration date
- May 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (781) 340-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
William D. Kasimer practices at South Shore Hospital in South Weymouth, Massachusetts
William Kasimer's primary practice is South Shore Hospital, at 55 Fogg Road, South Weymouth, MA 02190 in Norfolk County. The practice phone is (781) 340-8000.
- South Shore Hospital55 Fogg Road, South Weymouth, MA 02190 · Norfolk CountyPhone(781) 340-8000
Source: Dmand AI Affiliation Data
William D. Kasimer is affiliated with 4 sites of care and 1 medical group
William Kasimer's primary practice is South Shore Hospital in South Weymouth, Massachusetts, part of South Shore Health System. William Kasimer is also affiliated with Brigham and Women's Hospital. The medical group on file is MetroSouth Pathology, Inc. Dmand AI also links William Kasimer to 1 more hospital and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William D. Kasimer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Kasimer practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| South Shore Hospital | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across South Shore Health System and 6.2K+ hospitals, with verified contacts in the same login.
William D. Kasimer is one of 174 pathologists in Massachusetts
Anatomic pathology is William Kasimer's primary specialty in the NPI Registry, under taxonomy code 207ZP0101X. William Kasimer is licensed in Massachusetts.
Specialties and state licenses
- Anatomic pathology, MassachusettsPrimary
Pathologists near William Kasimer
Counts of pathologists 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
William D. Kasimer billed Medicare for 4,381 services in 2024
CMS data shows 4,381 Medicare services from William Kasimer across 24 procedure codes in 2024, for 1,464 Medicare patients. Medicare paid $116,520 for them.
William Kasimer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 3,6592024: 4,31718%
- Other services
- 2023: 402024: 393%
- Imaging
- 2023: 252024: 25No change
Where William Kasimer's Medicare services took place, 2024
- In an office982%
- In a facility4,28398%
William Kasimer compared with the Massachusetts median for pathologists, 2024
- William Kasimer
- Massachusetts median
- Medicare services
- 4,381vs 1,0194.3 times
- Medicare patients
- 1,464vs 4533.2 times
Medians across 169 pathologists in Massachusetts with Dmand AI profiles that report each measure.
William Kasimer'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 William Kasimer and other pathologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
William D. Kasimer treated 1,464 Medicare patients in 2024, average age 76
CMS counts 1,464 Medicare patients who saw William Kasimer in 2024. The largest group is 75 to 84, with 647 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts William Kasimer's median patient age at 43, with 59% women.
William Kasimer's Medicare patients by age, 2024
William Kasimer's Medicare patients by sex, 2024
- Women76552%
- Men69948%
Chronic conditions among William Kasimer's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Anxiety37%
- Ischemic heart disease36%
- Chronic kidney disease34%
- Mood disorders32%
- Cancer31%
Share of Medicare patients with each condition. A patient can have several.
William Kasimer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 43
Patient panel by sex, all payers
- Women59%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William D. Kasimer scored 90 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for William Kasimer for performance year 2024, reported as part of a group. William Kasimer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
William Kasimer's MIPS scores, performance year 2024
- 90of 100Final score
- 88.1of 100Quality
- 40of 100Improvement Activities
- 78of 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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William D. Kasimer received $292 in industry payments from 2016 to 2025
CMS Open Payments shows 9 general payments to William Kasimer from 6 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $110.
General payments to William Kasimer by program year, 2016 to 2025
Companies that paid William Kasimer the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
William D. Kasimer graduated from University of Pittsburgh School of Medicine
William Kasimer graduated from University of Pittsburgh School of Medicine in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for William D. Kasimer'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 William D. Kasimer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William D. Kasimer's NPI number?
William D. Kasimer's NPI number is 1265485288. It was assigned on May 19, 2006, and it is active in the NPI Registry.
What does William D. Kasimer specialize in?
William D. Kasimer is a pathologist in South Weymouth, Massachusetts. The primary specialty in the NPI Registry is Anatomic Pathology Physician (taxonomy code 207ZP0101X).
Where does William D. Kasimer practice?
William Kasimer practices at 55 Fogg Road, South Weymouth, MA 02190. William Kasimer's primary practice is South Shore Hospital in South Weymouth, Massachusetts, part of South Shore Health System. Dmand AI also links William Kasimer to 1 hospital and 1 group practice or clinic.
What is William D. Kasimer's office phone number?
The practice phone on file for William Kasimer is (781) 340-8000.
What is William D. Kasimer's medical license number?
William Kasimer holds Massachusetts license 60294.
Which hospitals is William D. Kasimer affiliated with?
William Kasimer practices at South Shore Hospital in South Weymouth, Massachusetts. William Kasimer is also affiliated with Brigham and Women's Hospital. Dmand AI links William Kasimer to 1 more hospital.
What medical group is William D. Kasimer part of?
William Kasimer is linked to MetroSouth Pathology, Inc.
Does William D. Kasimer accept Medicare?
Yes. CMS data shows William Kasimer billed Medicare for 4,381 services in 2024, and William Kasimer accepts Medicare assignment.
What is William D. Kasimer's MIPS score?
William Kasimer's MIPS final score for performance year 2024 is 90 out of 100, reported as part of a group.
How many Medicare patients does William D. Kasimer see?
CMS counts 1,464 Medicare patients who saw William Kasimer in 2024, with an average age of 76.
Show 4 more questionsShow fewer questions
What services does William D. Kasimer bill to Medicare?
In 2024, William Kasimer's most billed Medicare services were lab and pathology test (88305), lab and pathology test (86255) and lab and pathology test (88341).
Where did William D. Kasimer go to medical school?
William Kasimer graduated from University of Pittsburgh School of Medicine in 1984.
Has William D. Kasimer received payments from drug or device companies?
CMS Open Payments shows $292 in general payments to William Kasimer from 6 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has William D. Kasimer been practicing?
William Kasimer graduated from medical school in 1984, 42 years ago.
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