Titus Chang, M.D.
Allergy & Immunology Physician · Aurora, IL
Titus Chang, M.D. is an allergy & immunology physician with a practice address in Aurora, Illinois, and NPI 1316988850, issued on Jun 8, 2006. Check the license (Illinois 036-109430, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Titus Chang
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License numbers
- 036-109430 IL
49223 WI
Self-reported in NPPES; status is on the state search - Practice location
- 2285 Sequoia Dr, Aurora, IL 60506
- Phone
- (630) 859-6700
- Enumerated
- Jun 8, 2006
- Entity
- Type 1 · individual
Also registered at 2285 Sequoia Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abhijeet Ahluwalia, PTPhysical Therapist1487172342
- Maria Arzadon-Mercado, RN, MS, FNPNurse Practitioner1356448872
- Marisa Barnett, APNObstetrics & Gynecology Nurse Practitioner1447444567
- Randall Bennett, LCPC,LMFTProfessional Counselor1194835702
- Shelley Benson, L.C.S.W.Clinical Social Worker1346515715
- Linda Benton, LCSW, CADCClinical Social Worker1881675023
Verify Titus Chang 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 036-109430Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2.4 times the Medicare Part D claims of the average allergy & immunology physician in 2024
1,750 Medicare Part D claims for 265 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Montelukast Sodium212 claims
- Azelastine Hcl193 claims
- Prednisone116 claims
- Trelegy Ellipta114 claims
- Fluticasone Propionate110 claims
- Albuterol Sulfate Hfa103 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
- Advocate Health And Hospitals CorporationAurora, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Allergy & Immunology Physician providers in Illinois
There are 162 allergy & immunology physician records in Illinois.
Other allergy & immunology physician records in Illinois
- Arabelle Abellard, MDPeoria, IL1245729805
- Daryn Abraham, M.D.St Charles, IL1104975770
- Justine Ade, MDUrbana, IL1457707010
- Afia Adu-Gyamfi, MDChicago, IL1245961309
- Ingrid Alexander, MDSpringfield, IL1144269531
- Hetal Amin, MDChannahon, IL1184665424
- Evelyn Angulo, M.D.Glenview, IL1184967770
- Susan Apolinario, M.D.Oak Lawn, IL1174522171
- Noga Askenazi, MDCrystal Lake, IL1972518702
- Sakina Bajowala, M.D.North Aurora, IL1427259605
Common questions
What is Titus Chang, M.D.'s NPI number?
Titus Chang, M.D.'s National Provider Identifier (NPI) is 1316988850, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Titus Chang, M.D. located?
The NPPES record lists a practice address at 2285 Sequoia Dr, Aurora, IL, 60506. Phone: (630) 859-6700. Providers update this record themselves, so call before visiting.
How can I verify Titus Chang, M.D.'s license?
NPPES lists Illinois license number 036-109430, 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 Titus Chang, M.D. prescribe under Medicare Part D?
In 2024, Titus Chang, M.D. had 1,750 Medicare Part D claims for 265 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), 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.
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) 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 27, 2026.