Michael K. Polnerow, D.O.
Nephrology Physician · Wilmington, DE
Michael K. Polnerow, D.O. is a nephrology physician with a practice address in Wilmington, Delaware, and NPI 1881680023, issued on Sep 22, 2005. Check the license (Delaware C2-0002419, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Michael K. Polnerow
- Credential
- D.O.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- C2-0002419 DE
H0038383 MD
Self-reported in NPPES; status is on the state search - Practice location
- 701 N Clayton St Ste 401, Wilmington, DE 19805
- Phone
- (302) 421-9411
- Enumerated
- Sep 22, 2005
- Record last updated
- Jun 15, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (302) 421-9460
- Medicaid IDs
- 526271200 MD
0000104503 DE
8818606 NJ - Entity
- Type 1 · individual
8 nearest nephrology physician records → All 52 in Delaware → Look up another NPI →
Also registered at 701 N Clayton St Ste 401
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Miroslaw Zdunek, M.D.Nephrology Physician1508853615
Verify Michael K. Polnerow in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C2-0002419Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average nephrology physician in 2024
18 Medicare Part D claims, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
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.
Michael K. Polnerow among 52 nephrology physician records in Delaware
Michael K. Polnerow, D.O. is one of 52 nephrology physician records with a practice address in Delaware. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 71% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 75% of these records are
- Record last updated2011 · 73% 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 Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Delaware
There are 52 nephrology physician records in Delaware.
All 52 in Delaware → Every provider in Wilmington → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Brajesh Agarwal, M.D.Wilmington, DE 198051053375337
- Arun Malhotra, M.D.Wilmington, DE 198051326034893
- Donna Robino, M.D.Wilmington, DE 198051922062850
- Miroslaw Zdunek, M.D.Wilmington, DE 198051508853615
- Dhruval Patel, MDWilmington, DE 198061912101502
- Brenden Connor, DOWilmington, DE 198081902241441
- Manish Garg, M.D.Wilmington, DE 198081821035650
- Arun Kottarathara, MDWilmington, DE 198081568852838
Common questions
What is Michael K. Polnerow, D.O.'s NPI number?
Michael K. Polnerow, D.O.'s National Provider Identifier (NPI) is 1881680023, issued on Sep 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Michael K. Polnerow, D.O. located?
The NPPES record lists a practice address at 701 N Clayton St Ste 401, Wilmington, DE, 19805. Phone: (302) 421-9411. Providers update this record themselves, so call before visiting.
How can I verify Michael K. Polnerow, D.O.'s license?
NPPES lists Delaware license number C2-0002419, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael K. Polnerow, D.O. prescribe under Medicare Part D?
In 2024, Michael K. Polnerow, D.O. had 18 Medicare Part D claims; 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.