Ann Renee Collier, MD
Allergy & Immunology Physician · Oak Brook, IL
Ann Renee Collier, MD is an allergy & immunology physician with a practice address in Oak Brook, Illinois, and NPI 1891863411, issued on Dec 1, 2006. Check the license (Illinois 036118702, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ann Renee Collier
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License numbers
- 036118702 IL
35084568 OH
Self-reported in NPPES; status is on the state search - Practice location
- 120 Oakbrook Ctr, Oak Brook, IL 60523
- Phone
- (630) 574-0460
- Enumerated
- Dec 1, 2006
- Record last updated
- Dec 28, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (630) 574-0470
- Medicare enrollment
- Enrolled (PECOS I20160322000511); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 162 in Illinois → Look up another NPI →
Also registered at 120 Oakbrook Ctr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Madeline Bernbom, PSY.D.Clinical Psychologist1629126065
- Jennifer Catalfio, PA-CMedical Physician Assistant1386953057
- Jag Chawla, D.D.SOrthodontics and Dentofacial Orthopedics Dentistry1306065073
- James Gianakakis, D.D.S.,M.S.Endodontics1841522612
- Cecilia Guzman, L.C.P.C.Professional Counselor1649320946
- Jeffrey Hembrough, D.D.S.,M.S.Endodontics1346572120
Verify Ann Renee Collier 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 036118702Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% more Medicare Part D claims than the average allergy & immunology physician in 2024
1,204 Medicare Part D claims for 205 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 48% of claims.
Most prescribed
- Trelegy Ellipta156 claims
- Azelastine Hcl119 claims
- Montelukast Sodium109 claims
- Xolair73 claims
- Epinephrine72 claims
- Albuterol Sulfate Hfa70 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
- Duke Health Integrated Practice IncDurham, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ann Renee Collier among 162 allergy & immunology physician records in Illinois
Ann Renee Collier, MD is one of 162 allergy & immunology physician records with a practice address in Illinois. 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 48% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2001 · median 2001 among the 114 with a school on file
- Record last updated2007 · 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 207K00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Illinois
There are 162 allergy & immunology physician records in Illinois.
All 162 in Illinois → Every provider in Oak Brook → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Manika Girdhar, D.O.Hinsdale, IL 605211003186479
- Kiran Girdhar, M.D.Hinsdale, IL 605211508942822
- Mark Jacobson, M.DHinsdale, IL 605211124059076
- Daina RingusHinsdale, IL 605211205383874
- Syed Rizvi, MDCountryside, IL 605251992235865
- Samyukta Koppula, M.D.Willowbrook, IL 605271770641763
- Titus Chang, M.D.Aurora, IL 605061316988850
- Diane Ozog, MDNaperville, IL 605401972647154
Common questions
What is Ann Renee Collier, MD's NPI number?
Ann Renee Collier, MD's National Provider Identifier (NPI) is 1891863411, issued on Dec 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ann Renee Collier, MD located?
The NPPES record lists a practice address at 120 Oakbrook Ctr, Oak Brook, IL, 60523. Phone: (630) 574-0460. Providers update this record themselves, so call before visiting.
How can I verify Ann Renee Collier, MD's license?
NPPES lists Illinois license number 036118702, 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 Ann Renee Collier, MD prescribe under Medicare Part D?
In 2024, Ann Renee Collier, MD had 1,204 Medicare Part D claims for 205 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.