Peter J. Mason, MD
Cardiovascular Disease Physician · Madison, WI
Peter J. Mason, MD is a cardiovascular disease physician with a practice address in Madison, Wisconsin, and NPI 1144282120, issued on Apr 5, 2006. Check the license (Wisconsin 49077, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Peter J. Mason
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License numbers
- 49077 WI
49077-020 WI
2025-02756 NC
Self-reported in NPPES; status is on the state search - Practice location
- 350 S Hamilton St Unit 501, Madison, WI 53703
- Phone
- (608) 443-8931
- Enumerated
- Apr 5, 2006
- Record last updated
- May 13, 2026
- Medicaid IDs
- 34838100 WI
1144282120 WI - Medicare enrollment
- Enrolled (PECOS I20251018000050); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 1997
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 449 in Wisconsin → Look up another NPI →
Verify Peter J. Mason in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 49077Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,075 Medicare Part D claims for 218 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Atorvastatin Calcium124 claims
- Metoprolol Succinate96 claims
- Amoxicillin61 claims
- Entresto60 claims
- Losartan Potassium56 claims
- Rosuvastatin Calcium51 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $149.31
3 payments; by number, the most common kind was food and beverage; the largest payer was Edwards Lifesciences Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Unc Physicians Network LLCSanford, NC
- University OF North Carolina AT Chapel HillChapel Hill, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter J. Mason among 449 cardiovascular disease physician records in Wisconsin
Peter J. Mason, MD is one of 449 cardiovascular disease physician records with a practice address in Wisconsin. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 42% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1997 · median 2001 among the 279 with a school on file
- Record last updated2026 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Wisconsin
There are 449 cardiovascular disease physician records in Wisconsin.
All 449 in Wisconsin → Every provider in Madison → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Peter Kosolcharoen, MDMadison, WI 537051538269360
- Christopher Kurtz, M.D.Madison, WI 537051831179209
- Patrick McBride, MD MPHMadison, WI 537051851367882
- Jennifer Penzotti, M.D.Madison, WI 537051154422640
- Michael Rockman, MD, PHDMadison, WI 537051063155794
- Douglas Russell, MDMadison, WI 537051720091119
- Eugene Kaji, MD PHDFitchburg, WI 537111093776874
- Jonathan Makielski, MDFitchburg, WI 537111255308193
Common questions
What is Peter J. Mason, MD's NPI number?
Peter J. Mason, MD's National Provider Identifier (NPI) is 1144282120, issued on Apr 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Peter J. Mason, MD located?
The NPPES record lists a practice address at 350 S Hamilton St Unit 501, Madison, WI, 53703. Phone: (608) 443-8931. Providers update this record themselves, so call before visiting.
How can I verify Peter J. Mason, MD's license?
NPPES lists Wisconsin license number 49077, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Peter J. Mason, MD prescribe under Medicare Part D?
In 2024, Peter J. Mason, MD had 1,075 Medicare Part D claims for 218 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.