Dionisio James Mariano, MD
Clinical Cardiac Electrophysiology Physician · Appleton, WI
Dionisio James Mariano, MD is a clinical cardiac electrophysiology physician with a practice address in Appleton, Wisconsin, and NPI 1649220229, issued on May 12, 2006. Check the license (Wisconsin 33293-020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Dionisio James Mariano
- Credential
- MD
- Primary taxonomy
- Clinical Cardiac Electrophysiology Physician 207RC0001X
- License number
- 33293-020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 5045 W Grande Market Dr, Appleton, WI 54913
- Phone
- (920) 886-9380
- Enumerated
- May 12, 2006
- Record last updated
- Mar 16, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (920) 886-9381
- Medicare enrollment
- Enrolled (PECOS I20040130001002); accepts Medicare assignment
- Medical or professional school
- Mayo Medical School, 1985
- Entity
- Type 1 · individual
8 nearest clinical cardiac electrophysiology physician records → All 83 in Wisconsin → Look up another NPI →
Also registered at 5045 W Grande Market Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Peter Ackell, MDInterventional Cardiology Physician1710937115
- Kristina Almanza, APRNNurse Practitioner1376386722
- Laura Butch, NPNurse Practitioner1952974206
- Carrie Chapman, M.D.Cardiovascular Disease Physician1396703732
- Erin Diedrick, PA-CPhysician Assistant1467980540
- Megan Froiland, PA-CPhysician Assistant1194580944
Verify Dionisio James Mariano in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 33293-020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average clinical cardiac electrophysiology physician in 2024
1,774 Medicare Part D claims for 372 beneficiaries, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Eliquis325 claims
- Metoprolol Succinate308 claims
- Flecainide Acetate195 claims
- Metoprolol Tartrate159 claims
- Amiodarone Hcl136 claims
- Xarelto101 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 78.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $14.90
1 payment: food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). The 3,167 providers of this specialty with any payment received $10,651.37 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 one group practice
- Ascension Medical Group-Fox Valley Wisconsin IncNew London, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dionisio James Mariano among 83 clinical cardiac electrophysiology physician records in Wisconsin
Dionisio James Mariano, MD is one of 83 clinical cardiac electrophysiology physician records with a practice address in Wisconsin. 94% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 51% newer
- In a Medicare fileYes · 94% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated1985 · median 2002 among the 70 with a school on file
- Record last updated2020 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0001X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Cardiac Electrophysiology Physician providers in Wisconsin
There are 83 clinical cardiac electrophysiology physician records in Wisconsin.
All 83 in Wisconsin → Every provider in Appleton → Clinical Cardiac Electrophysiology Physician nationwide →
The 8 clinical cardiac electrophysiology physician records with the nearest ZIP codes
- Daniel Nelson, M.D.Appleton, WI 549131750812491
- Babar Parvez, M.D.Appleton, WI 549111346404076
- Li Zhou, MDAppleton, WI 549111285608984
- Jeremy Zimmermann, DOFond Du Lac, WI 549351962729517
- Nway Ko Ko, MBBSEau Claire, WI 547031649646126
- Divya Korpu, MBBSEau Claire, WI 547031669823159
- Robert Rea, M.D.Eau Claire, WI 547031689651689
- Vaibhav Vaidya, MBBSEau Claire, WI 547031568726008
Common questions
What is Dionisio James Mariano, MD's NPI number?
Dionisio James Mariano, MD's National Provider Identifier (NPI) is 1649220229, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dionisio James Mariano, MD located?
The NPPES record lists a practice address at 5045 W Grande Market Dr, Appleton, WI, 54913. Phone: (920) 886-9380. Providers update this record themselves, so call before visiting.
How can I verify Dionisio James Mariano, MD's license?
NPPES lists Wisconsin license number 33293-020, 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.
How much does Dionisio James Mariano, MD prescribe under Medicare Part D?
In 2024, Dionisio James Mariano, MD had 1,774 Medicare Part D claims for 372 beneficiaries; the average among clinical cardiac electrophysiology physician prescribers was 1,710. Part D covers Medicare prescriptions only.
What is Dionisio James Mariano, MD's MIPS final score?
The 2023 MIPS final score is 78.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.