Nayanika Challa
Ophthalmology Physician · Chicago, IL
Nayanika Challa is an ophthalmology physician with a practice address in Chicago, Illinois, and NPI 1447992896, issued on Apr 7, 2022. Check the license (Illinois 036.179653, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Nayanika Challa
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 036.179653 IL
Self-reported in NPPES; status is on the state search - Practice location
- 820 South Wood Street, Chicago, IL 60612
- Phone
- (312) 996-2933
- Enumerated
- Apr 7, 2022
- Record last updated
- May 20, 2026
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 898 in Illinois → Look up another NPI →
Also registered at 820 South Wood Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nayanika Challa 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 036.179653Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average ophthalmology physician in 2024
402 Medicare Part D claims for 157 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of claims.
Most prescribed
- Latanoprost92 claims
- Dorzolamide-Timolol52 claims
- Brimonidine Tartrate45 claims
- Prednisolone Acetate36 claims
- Timolol Maleate20 claims
- Travoprost20 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.
Nayanika Challa among 898 ophthalmology physician records in Illinois
Nayanika Challa 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 2022, is newer than 93% of them.
- NPI issued2022 · 93% of these records are older, 5% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2026 · 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 Chicago → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Nathalie Azar, M.D.Chicago, IL 606121437133295
- Adrienne Berman, MDChicago, IL 606121003826173
- Robison Chan, MDChicago, IL 606121144204397
- Ali D'Jalilian, MDChicago, IL 606121649299363
- James Goodwin, M.D.Chicago, IL 606121023038783
- Richard Grostern, MDChicago, IL 606121902881170
- Sandeep Jain, M.D.Chicago, IL 606121972616613
- Charlotte JoslinChicago, IL 606121194735217
Common questions
What is Nayanika Challa's NPI number?
Nayanika Challa's National Provider Identifier (NPI) is 1447992896, issued on Apr 7, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Nayanika Challa located?
The NPPES record lists a practice address at 820 South Wood Street, Chicago, IL, 60612. Phone: (312) 996-2933. Providers update this record themselves, so call before visiting.
How can I verify Nayanika Challa's license?
NPPES lists Illinois license number 036.179653, 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 Nayanika Challa prescribe under Medicare Part D?
In 2024, Nayanika Challa had 402 Medicare Part D claims for 157 beneficiaries; 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.