Brett Maag
Certified Registered Nurse Anesthetist · Dubuque, IA
Brett Maag is a certified registered nurse anesthetist with a practice address in Dubuque, Iowa, and NPI 1184020877, issued on Nov 7, 2014. Check the license (Iowa D138951, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Brett Maag
- Primary taxonomy
- Certified Registered Nurse Anesthetist 367500000X
- License number
- D138951 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1515 Delhi St, Dubuque, IA 52001
- Phone
- (563) 557-5991
- Enumerated
- Nov 7, 2014
- Record last updated
- Dec 31, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (563) 589-4078
- Medicare enrollment
- Enrolled (PECOS I20201111002311); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest certified registered nurse anesthetist records → All 584 in Iowa → Look up another NPI →
Also registered at 1515 Delhi St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Zhengjin Cao, M.D.Internal Medicine Physician1861616039
- Richard Fairley, M.D.Internal Medicine Physician1801862552
- Krishnarao Gorrepati, MDGastroenterology Physician1588624811
- Angela Hubanks, PA-CMedical Physician Assistant1356538300
- Ronald Iverson, M.D.Endocrinology, Diabetes & Metabolism Physician1265407589
Verify Brett Maag in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license D138951Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 97.7 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: $40.72
2 payments; by number, the most common kind was food and beverage; the largest payer was ConvaTec Inc. The 24,076 providers of this specialty with any payment received $135.08 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
- Grandview Anesthesia PCDubuque, IA
- Southwest Health Center IncPlatteville, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brett Maag among 584 certified registered nurse anesthetist records in Iowa
Brett Maag is one of 584 certified registered nurse anesthetist records with a practice address in Iowa. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 64% of them.
- NPI issued2014 · 64% of these records are older, 32% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2014 · median 2014 among the 406 with a school on file
- Record last updated2014 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 certified registered nurse anesthetist records list a practice address in Dubuque
They are 26 of the 1,468 NPPES records with a practice address in Dubuque, and 584 certified registered nurse anesthetist records in Iowa.
All 584 in Iowa → Every provider in Dubuque → Certified Registered Nurse Anesthetist nationwide →
The 8 certified registered nurse anesthetist records with the nearest ZIP codes
- Scott Bainbridge, CRNADubuque, IA 520011821027392
- Benjamin Baker, CRNA, DNPDubuque, IA 520011912388786
- Joseph Burds, CRNADubuque, IA 520011174900286
- Phillip GuillienDubuque, IA 520011265999809
- Terrence Hutchcroft, CRNADubuque, IA 520011295707172
- Stephanie Klein, ARNP, CRNADubuque, IA 520011952565251
- Coreyne Kurjatko, CRNADubuque, IA 520011255019253
- Nicholas Linderer, CRNA, DNPDubuque, IA 520011841673902
Common questions
What is Brett Maag's NPI number?
Brett Maag's National Provider Identifier (NPI) is 1184020877, issued on Nov 7, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Brett Maag located?
The NPPES record lists a practice address at 1515 Delhi St, Dubuque, IA, 52001. Phone: (563) 557-5991. Providers update this record themselves, so call before visiting.
How can I verify Brett Maag's license?
NPPES lists Iowa license number D138951, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
What is Brett Maag's MIPS final score?
The 2023 MIPS final score is 97.7 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.