Nicholas J. Izor, M.D.
Nephrology Physician · Birmingham, AL
Nicholas J. Izor, M.D. is a nephrology physician with a practice address in Birmingham, Alabama, and NPI 1679004865, issued on Mar 21, 2017. Check the license (Alabama 44368, as entered in NPPES) on the Alabama Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Nicholas J. Izor
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 44368 AL
Self-reported in NPPES; status is on the state search - Practice location
- 817 Princeton Avenue SW, Birmingham, AL 35211
- Phone
- (205) 226-5900
- Enumerated
- Mar 21, 2017
- Record last updated
- Feb 26, 2025
- Fax
- (205) 226-5937
- Medicare enrollment
- Enrolled (PECOS I20220719000316); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 183 in Alabama → Look up another NPI →
Also registered at 817 Princeton Avenue SW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Theodore Feely, MDNephrology Physician1982756599
- James Harms, M.D.Nephrology Physician1831416114
- Michael Hovater, M.D.Nephrology Physician1932360294
- Robert McCord, MDVascular Surgery Physician1467434498
- Laura PickettNurse Practitioner1770128357
- Donald Quinn, PANephrology Physician1750333506
Verify Nicholas J. Izor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlabama Board of Medical Examiners
Search for license 44368Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average nephrology physician in 2024
765 Medicare Part D claims for 237 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Losartan Potassium140 claims
- Amlodipine Besylate113 claims
- Jardiance72 claims
- Carvedilol52 claims
- Chlorthalidone37 claims
- Farxiga32 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.
Bills Medicare through one group practice
- Nephrology Associates, PCBirmingham, AL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas J. Izor among 183 nephrology physician records in Alabama
Nicholas J. Izor, M.D. is one of 183 nephrology physician records with a practice address in Alabama. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 88% of them.
- NPI issued2017 · 88% of these records are older, 11% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated2017 · median 2003 among the 143 with a school on file
- Record last updated2025 · 46% 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 Alabama practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Alabama
There are 183 nephrology physician records in Alabama.
All 183 in Alabama → Every provider in Birmingham → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Theodore Feely, MDBirmingham, AL 352111982756599
- James Harms, M.D.Birmingham, AL 352111831416114
- Michael Hovater, M.D.Birmingham, AL 352111932360294
- Jerry Jackson, MDBirmingham, AL 352111467400051
- James Lewis, MDBirmingham, AL 352111669412904
- Donald Quinn, PABirmingham, AL 352111750333506
- Michele Thomas, MDBirmingham, AL 352111538193958
- Jason Tsai, MDBirmingham, AL 352111528095817
Common questions
What is Nicholas J. Izor, M.D.'s NPI number?
Nicholas J. Izor, M.D.'s National Provider Identifier (NPI) is 1679004865, issued on Mar 21, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas J. Izor, M.D. located?
The NPPES record lists a practice address at 817 Princeton Avenue SW, Birmingham, AL, 35211. Phone: (205) 226-5900. Providers update this record themselves, so call before visiting.
How can I verify Nicholas J. Izor, M.D.'s license?
NPPES lists Alabama license number 44368, as entered by the provider. Search the Alabama Board of Medical Examiners at https://www.albme.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nicholas J. Izor, M.D. prescribe under Medicare Part D?
In 2024, Nicholas J. Izor, M.D. had 765 Medicare Part D claims for 237 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.