David M. Ringold, M.D.
Nephrology Physician · Dubuque, IA
David M. Ringold, M.D. is a nephrology physician with a practice address in Dubuque, Iowa, and NPI 1912967118, issued on Mar 23, 2006. Check the license (Iowa 34708, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- David M. Ringold
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- 34708 IA
47156 02 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Delhi St Ste 2100, Dubuque, IA 52001
- Phone
- (563) 557-9111
- Enumerated
- Mar 23, 2006
- Record last updated
- Apr 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (563) 589-4046
- Medicaid IDs
- 435826 IA
34533600 WI - Medicare enrollment
- Enrolled (PECOS I20040611000761); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 92 in Iowa → Look up another NPI →
Also registered at 1500 Delhi St Ste 2100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Heidi Haas, RDRegistered Dietitian1609962927
- John Whalen, M.D.Nephrology Physician1285694802
Verify David M. Ringold in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 34708Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.4 times the Medicare Part D claims of the average nephrology physician in 2024
6,495 Medicare Part D claims for 756 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Furosemide647 claims
- Irbesartan458 claims
- Amlodipine Besylate361 claims
- Farxiga311 claims
- Potassium Chloride265 claims
- Jardiance251 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: $198.57
9 payments; by number, the most common kind was food and beverage; the largest payer was Boehringer Ingelheim Pharmaceuticals, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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 2 group practices
- Dubuque Internal Medicine PCDubuque, IA
- Iowa Physicians Clinic Medical FoundationManchester, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David M. Ringold among 92 nephrology physician records in Iowa
David M. Ringold, M.D. is one of 92 nephrology physician records with a practice address in Iowa. 84% 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 16% of them.
- NPI issued2006 · 16% of these records are older, 53% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1999 · median 2001 among the 67 with a school on file
- Record last updated2021 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Iowa
There are 92 nephrology physician records in Iowa.
All 92 in Iowa → Every provider in Dubuque → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Andrew Bland, MDDubuque, IA 520011467582775
- John Whalen, M.D.Dubuque, IA 520011285694802
- Lisa Antes, MDIowa City, IA 522421174511026
- John Bertolatus, MDIowa City, IA 522421720075831
- Joel Gordon, MDIowa City, IA 522421174511034
- Rebecca Hegeman, MDIowa City, IA 522421386626604
- Chou-Long Huang, MD PHDIowa City, IA 522421396704425
- Lawrence Hunsicker, MDIowa City, IA 522421881676195
Common questions
What is David M. Ringold, M.D.'s NPI number?
David M. Ringold, M.D.'s National Provider Identifier (NPI) is 1912967118, issued on Mar 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David M. Ringold, M.D. located?
The NPPES record lists a practice address at 1500 Delhi St Ste 2100, Dubuque, IA, 52001. Phone: (563) 557-9111. Providers update this record themselves, so call before visiting.
How can I verify David M. Ringold, M.D.'s license?
NPPES lists Iowa license number 34708, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David M. Ringold, M.D. prescribe under Medicare Part D?
In 2024, David M. Ringold, M.D. had 6,495 Medicare Part D claims for 756 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.