Thao T. Doan, MD
Allergy & Immunology Physician · Libertyville, IL
Thao T. Doan, MD is an allergy & immunology physician with a practice address in Libertyville, Illinois, and NPI 1649749813, issued on Nov 17, 2018. Check the license (Illinois 036.079568, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Thao T. Doan
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 036.079568 IL
Self-reported in NPPES; status is on the state search - Practice location
- 523 Sandy LN, Libertyville, IL 60048
- Phone
- (847) 816-7245
- Enumerated
- Nov 17, 2018
- Record last updated
- Nov 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 162 in Illinois → Look up another NPI →
Verify Thao T. Doan 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 036.079568Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $91.25
1 payment: food and beverage; the largest payer was Merz North America, Inc. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Thao T. Doan among 162 allergy & immunology physician records in Illinois
Thao T. Doan, 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 2018, is newer than 91% of them.
- NPI issued2018 · 91% of these records are older, 4% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2018 · 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 Libertyville → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Stacie McMurtry, MDLibertyville, IL 600481407955214
- Paul Detjen, MDKenilworth, IL 600431396739298
- Joel Klein, M.D.Highland Park, IL 600351770566820
- Deeba Masood, M.D.Vernon Hills, IL 600611396787339
- Lisa Sullivan, M.D.Highland Park, IL 600351386650273
- Salmon Goldberg, M.D.Northbrook, IL 600621487674883
- Elena Koles, M.D.Northbrook, IL 600621902984149
- John Lawson, M.D.Northbrook, IL 600621689864357
Common questions
What is Thao T. Doan, MD's NPI number?
Thao T. Doan, MD's National Provider Identifier (NPI) is 1649749813, issued on Nov 17, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Thao T. Doan, MD located?
The NPPES record lists a practice address at 523 Sandy LN, Libertyville, IL, 60048. Phone: (847) 816-7245. Providers update this record themselves, so call before visiting.
How can I verify Thao T. Doan, MD's license?
NPPES lists Illinois license number 036.079568, 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.
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.