Dr. William C. Siegel, MD
- Medicare services, 2023
- 1,722
- Part D claims, 2024
- 909
- MIPS score, 2024
- 89
- Hospital affiliations
- 1
- Industry payments
- $808
- 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
Find Dr. Siegel's professional email, personal email and mobile number
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Dr. William C. Siegel is a cardiologist in South Weymouth, Massachusetts
Dr. Siegel practices at South Shore Hospital in South Weymouth, Massachusetts, part of South Shore Health System.
Dr. Siegel's NPI, 1336120757, was assigned on November 11, 2005. Dr. Siegel graduated from Stanford University School of Medicine in 1980. Dr. Siegel holds Massachusetts license 50750.
- NPI
- 1336120757NPI Registry (opens in a new tab)
- NPI enumeration date
- November 11, 2005
- NPI status
- Active
- Practice phone
- (781) 340-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William C. Siegel practices at South Shore Hospital in South Weymouth, Massachusetts
Dr. Siegel'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
Dr. William C. Siegel is affiliated with 3 sites of care and 2 medical groups
Dr. Siegel's primary practice is South Shore Hospital in South Weymouth, Massachusetts, part of South Shore Health System. The medical group on file is Signature Medical Group. Dmand AI also links Dr. Siegel to 2 more group practices and clinics 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. William C. Siegel's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Siegel practices, 3 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 |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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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.
Dr. William C. Siegel is one of 840 cardiologists in Massachusetts
Cardiovascular disease is Dr. Siegel's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Siegel is licensed in Massachusetts.
Specialties and state licenses
- Cardiovascular disease, MassachusettsPrimary
Cardiologists near Dr. Siegel
Counts of cardiologists 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. William C. Siegel billed Medicare for 1,722 services in 2023
CMS data shows 1,722 Medicare services from Dr. Siegel across 15 procedure codes in 2023. Medicare paid $107,188 for them.
Dr. Siegel's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 9012023: 8555%
- Tests and treatments
- 2022: 1,6152023: 62661%
- Surgery
- 2022: 2542023: 19324%
- Other services
- 2022: 682023: 4829%
- Imaging
- 2022: 512023: 0100%
Where Dr. Siegel's Medicare services took place, 2023
- In an office1,58892%
- In a facility1348%
Dr. Siegel compared with the Massachusetts median for cardiologists, 2023
- Dr. Siegel
- Massachusetts median
- Medicare services
- 1,722vs 1,6127% above
- Part D claims
- 742vs 84612% below
Medians across 817 cardiologists in Massachusetts with Dmand AI profiles that report each measure.
Dr. Siegel's most billed Medicare procedure codes, 2023
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. William C. Siegel's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Siegel's median patient age at 71, with 52% women.
Dr. Siegel's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women52%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. William C. Siegel wrote 909 Medicare Part D claims in 2024
In 2024, Dr. Siegel wrote 909 Medicare Part D claims for 341 patients. 80% of them were for generic drugs. CMS names the drug for 742 of them, across 21 drugs with 11 or more claims each, at $151,335 in total drug cost. In 2023, CMS named 5,231 claims across 46 drugs.
Dr. Siegel's Part D claims by kind of drug, 2024
- Generic729 claims80%
- Brand-name180 claims20%
Dr. Siegel'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: 5,2312024: 74286%
Drugs named by CMS: 21 in 2024, 46 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. William C. Siegel scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Siegel for performance year 2024, reported as part of a group.
Dr. Siegel's MIPS scores, performance year 2024
- 89of 100Final score
- 70.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. William C. Siegel received $808 in industry payments from 2016 to 2017
CMS Open Payments shows 58 general payments to Dr. Siegel from 13 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Novartis Pharmaceuticals Corporation paid the most, $258.
General payments to Dr. Siegel by program year, 2016 to 2017
Companies that paid Dr. Siegel the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William C. Siegel graduated from Stanford University School of Medicine
Dr. Siegel graduated from Stanford University School of Medicine in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William C. Siegel'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 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 | 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. William C. Siegel
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. William C. Siegel's NPI number?
Dr. William C. Siegel's NPI number is 1336120757. It was assigned on November 11, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William C. Siegel?
Dr. William C. Siegel is a cardiologist in South Weymouth, Massachusetts. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. William C. Siegel practice?
Dr. Siegel practices at 55 Fogg Road, South Weymouth, MA 02190. Dr. Siegel's primary practice is South Shore Hospital in South Weymouth, Massachusetts, part of South Shore Health System. Dmand AI also links Dr. Siegel to 2 group practices and clinics and 1 medical group.
What is Dr. William C. Siegel's office phone number?
The practice phone on file for Dr. Siegel is (781) 340-8000.
What is Dr. William C. Siegel's medical license number?
Dr. Siegel holds Massachusetts license 50750.
Which hospitals is Dr. William C. Siegel affiliated with?
Dr. Siegel practices at South Shore Hospital in South Weymouth, Massachusetts.
What medical group is Dr. William C. Siegel part of?
Dr. Siegel is linked to Signature Medical Group. Dmand AI links Dr. Siegel to 1 more medical group.
Does Dr. William C. Siegel accept Medicare?
Yes. CMS data shows Dr. Siegel billed Medicare for 1,722 services in 2023.
What is Dr. William C. Siegel's MIPS score?
Dr. Siegel's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
What services does Dr. William C. Siegel bill to Medicare?
In 2023, Dr. Siegel's most billed Medicare services were office visit, established patient (99214), heart test or procedure (93000) and surgery: heart and blood vessels (36415).
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Where did Dr. William C. Siegel go to medical school?
Dr. Siegel graduated from Stanford University School of Medicine in 1980.
What drugs does Dr. William C. Siegel prescribe most?
In 2024 Medicare Part D data, Dr. Siegel's most prescribed drugs by claims were Metoprolol Succinate, Eliquis and Atorvastatin Calcium.
Has Dr. William C. Siegel received payments from drug or device companies?
CMS Open Payments shows $808 in general payments to Dr. Siegel from 13 companies from 2016 to 2017. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. William C. Siegel been practicing?
Dr. Siegel graduated from medical school in 1980, 46 years ago.
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