Ilka Decker, M.D.
Nephrology Physician · Ann Arbor, MI
Ilka Decker, M.D. is a nephrology physician with a practice address in Ann Arbor, Michigan, and NPI 1891138616, issued on Apr 11, 2013. Check the license on the Michigan Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Ilka Decker
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- Practice location
- 1500 East Medical Center Dr, Ann Arbor, MI 48109
- Phone
- (734) 936-5548
- Enumerated
- Apr 11, 2013
- Entity
- Type 1 · individual
Also registered at 1500 East Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samia Abdelnabi, CNMAdvanced Practice Midwife1639404320
- Mahshid Abir, MDInternal Medicine Physician1790988632
- Barbara Adams, MDPediatrics Physician1962412577
- David Adams, MBBSAnesthesiology Physician1346484417
- Michael Adams, M.D.Internal Medicine Physician1780065284
- Gaury Adhikary, MDAnesthesiology Physician1629094297
Verify Ilka Decker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
56% fewer Medicare Part D claims than the average nephrology physician in 2024
667 Medicare Part D claims for 99 beneficiaries, against an average of 1,511 among the 8,473 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Amlodipine Besylate74 claims
- Potassium Citrate Er58 claims
- Losartan Potassium41 claims
- Potassium Chloride38 claims
- Lisinopril35 claims
- Allopurinol33 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.
One hospital or facility affiliation
- Regents OF The University OF MichiganAnn Arbor, MI
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Nephrology Physician providers in Michigan
There are 269 nephrology physician records in Michigan.
Other nephrology physician records in Michigan
- Mohamed AbdaliDetroit, MI1629852728
- Mohamed Abdalla, M.D.Flint, MI1760797344
- Ameer Abdulrazzak, MDRoseville, MI1104948280
- Hassan Abou-Rass, M.D.Detroit, MI1831596428
- Fadi Abuhmaid, MDAllen Park, MI1396869665
- George Adam, M.D.Battle Creek, MI1316902562
- Shreedhar Adhikari, MDWest Branch, MI1033560057
- Damali Adu, M.D.Westland, MI1356640890
- Muhammad Ahsan, M.D.Southfield, MI1396725305
- Syed Akbar, MDAllen Park, MI1477554699
Common questions
What is Ilka Decker, M.D.'s NPI number?
Ilka Decker, M.D.'s National Provider Identifier (NPI) is 1891138616, issued on Apr 11, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Ilka Decker, M.D. located?
The NPPES record lists a practice address at 1500 East Medical Center Dr, Ann Arbor, MI, 48109. Phone: (734) 936-5548. Providers update this record themselves, so call before visiting.
How can I verify Ilka Decker, M.D.'s license?
Search the Michigan Board of Medicine at https://www.michigan.gov/lara/bureau-list/bpl/health/hp-lic-health-prof/medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ilka Decker, M.D. prescribe under Medicare Part D?
In 2024, Ilka Decker, M.D. had 667 Medicare Part D claims for 99 beneficiaries; the average among nephrology physician prescribers was 1,511. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.