William M. Reiff, MD
Ophthalmology Physician · Elgin, IL
William M. Reiff, MD is an ophthalmology physician with a practice address in Elgin, Illinois, and NPI 1720187685, issued on Sep 21, 2006. Check the license (Illinois 036052088, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William M. Reiff
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 036052088 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1435 N Randall RD, Elgin, IL 60123
- Phone
- (847) 841-8866
- Enumerated
- Sep 21, 2006
- Record last updated
- Jan 7, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (847) 841-8986
- Medicaid ID
- 036052088 IL
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 898 in Illinois → Look up another NPI →
Also registered at 1435 N Randall RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William M. Reiff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036052088Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average ophthalmology physician in 2024
23 Medicare Part D claims, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
William M. Reiff among 898 ophthalmology physician records in Illinois
William M. Reiff, MD is one of 898 ophthalmology physician records with a practice address in Illinois. 75% 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, 44% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2011 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in Illinois
There are 898 ophthalmology physician records in Illinois.
All 898 in Illinois → Every provider in Elgin → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Rehan Hussain, M.D,Elgin, IL 601231922340066
- Rashmi Kapur, M.D.Elgin, IL 601231962679498
- Evelyn Ackermann, MDElgin, IL 601241053308676
- Sidney Bernstein, M.D.Elgin, IL 601241235194408
- Harry Bernstein, M.D.Elgin, IL 601241598790438
- Michael Seigle, MDElgin, IL 601241639166259
- Mohamed Adenwalla, M.D.Elmhurst, IL 601261184679524
- Saad Ahmad, MDElmhurst, IL 601261881613297
Common questions
What is William M. Reiff, MD's NPI number?
William M. Reiff, MD's National Provider Identifier (NPI) is 1720187685, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William M. Reiff, MD located?
The NPPES record lists a practice address at 1435 N Randall RD, Elgin, IL, 60123. Phone: (847) 841-8866. Providers update this record themselves, so call before visiting.
How can I verify William M. Reiff, MD's license?
NPPES lists Illinois license number 036052088, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William M. Reiff, MD prescribe under Medicare Part D?
In 2024, William M. Reiff, MD had 23 Medicare Part D claims; the average among ophthalmology physician prescribers was 1,518. 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.