John Carter Ralphe, MD
Pediatric Cardiology Physician · Madison, WI
John Carter Ralphe, MD is a pediatric cardiology physician with a practice address in Madison, Wisconsin, and NPI 1811962921, issued on Feb 22, 2006. Check the license (Wisconsin 51095-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John Carter Ralphe
- Credential
- MD
- Primary taxonomy
- Pediatric Cardiology Physician 2080P0202X
- License number
- 51095-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 600 Highland Ave, Madison, WI 53792
- Phone
- (608) 262-1603
- Enumerated
- Feb 22, 2006
- Record last updated
- Aug 2, 2023
- Fax
- (608) 263-0440
- Medicare enrollment
- Enrolled (PECOS I20080227000658); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest pediatric cardiology physician records → All 72 in Wisconsin → Look up another NPI →
Also registered at 600 Highland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael AabergSurgery Physician1346991064
- Carrah Aadrik, CRNACertified Registered Nurse Anesthetist1326423286
- Daniel Abbott, MDSurgical Oncology Physician1750412615
- Alaa Abd-ElsayedPain Medicine Physician1194967703
- Safiyya Abdulkadir, MDRheumatology Physician1093455826
- Edwin Abel, M.D.Urology Physician1083800510
Verify John Carter Ralphe in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 51095-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- University OF Wisconsin Medical Foundation IncMadison, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Carter Ralphe among 72 pediatric cardiology physician records in Wisconsin
John Carter Ralphe, MD is one of 72 pediatric cardiology physician records with a practice address in Wisconsin. 75% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 64% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1997 · median 2006 among the 46 with a school on file
- Record last updated2023 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0202X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Cardiology Physician providers in Wisconsin
There are 72 pediatric cardiology physician records in Wisconsin.
All 72 in Wisconsin → Every provider in Madison → Pediatric Cardiology Physician nationwide →
The 8 pediatric cardiology physician records with the nearest ZIP codes
- Catherine Allen, M.D.Madison, WI 537921265673164
- Heather Bartlett, MDMadison, WI 537921487649323
- Susan Foerster, MDMadison, WI 537921215953450
- Margaret Greco, MDMadison, WI 537921760686414
- John Hokanson, MDMadison, WI 537921700852829
- Derek Hoyme, M.D.Madison, WI 537921245469808
- Dana Irrer, M.D.Madison, WI 537921063771228
- Suhaib Kazmouz, MDMadison, WI 537921053559559
Common questions
What is John Carter Ralphe, MD's NPI number?
John Carter Ralphe, MD's National Provider Identifier (NPI) is 1811962921, issued on Feb 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Carter Ralphe, MD located?
The NPPES record lists a practice address at 600 Highland Ave, Madison, WI, 53792. Phone: (608) 262-1603. Providers update this record themselves, so call before visiting.
How can I verify John Carter Ralphe, MD's license?
NPPES lists Wisconsin license number 51095-020, 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.
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.