Nathan Charles Nowalk, M.D.
Pulmonary Disease Physician · Chicago, IL
Nathan Charles Nowalk, M.D. is a pulmonary disease physician with a practice address in Chicago, Illinois, and NPI 1003298720, issued on Jun 18, 2015. Check the license (Illinois 036152140, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Nathan Charles Nowalk
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License numbers
- 036152140 IL
MD490543 PA
Self-reported in NPPES; status is on the state search - Practice location
- 5841 S Maryland Ave, Chicago, IL 60637
- Phone
- (888) 824-0200
- Enumerated
- Jun 18, 2015
- Record last updated
- Sep 10, 2025
- Medicare enrollment
- Enrolled (PECOS I20251104003179); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 617 in Illinois → Look up another NPI →
Also registered at 5841 S Maryland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jehad Abdalla, MDSleep Medicine (Internal Medicine) Physician1053898684
- Sara Abdelaziz, MDEndocrinology, Diabetes & Metabolism Physician1598258089
- Noor Abdelrahman, PA-CPhysician Assistant1851012413
- Unknown Abdul Hanan, MDBlood Banking & Transfusion Medicine Physician1750022240
Verify Nathan Charles Nowalk 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 036152140Check 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 pulmonary disease physician in 2024
25 Medicare Part D claims, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 64% of claims.
Most prescribed
- Anoro Ellipta12 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.
Industry payments in 2024: $126.11
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 8,806 providers of this specialty with any payment received $5,159.88 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.
Bills Medicare through 2 group practices
- University OF ChicagoChicago, IL
- University OF Penn - Medical GroupPhiladelphia, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Charles Nowalk among 617 pulmonary disease physician records in Illinois
Nathan Charles Nowalk, M.D. is one of 617 pulmonary disease physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 77% of them.
- NPI issued2015 · 77% of these records are older, 18% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2015 · median 2005 among the 444 with a school on file
- Record last updated2025 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Illinois
There are 617 pulmonary disease physician records in Illinois.
All 617 in Illinois → Every provider in Chicago → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Sangeeta Bhorade, MDChicago, IL 606371174685622
- Douglas HogarthChicago, IL 606371619030137
- John KressChicago, IL 606371679635122
- Jerry Krishnan, M.D., PHD.Chicago, IL 606371205883444
- Babak Mokhlesi, M.D.Chicago, IL 606371265451397
- Septimiu MurguChicago, IL 606371881623460
- Gokhan MutluChicago, IL 606371841226537
- Edward NaureckasChicago, IL 606371386706836
Common questions
What is Nathan Charles Nowalk, M.D.'s NPI number?
Nathan Charles Nowalk, M.D.'s National Provider Identifier (NPI) is 1003298720, issued on Jun 18, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Charles Nowalk, M.D. located?
The NPPES record lists a practice address at 5841 S Maryland Ave, Chicago, IL, 60637. Phone: (888) 824-0200. Providers update this record themselves, so call before visiting.
How can I verify Nathan Charles Nowalk, M.D.'s license?
NPPES lists Illinois license number 036152140, 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 Nathan Charles Nowalk, M.D. prescribe under Medicare Part D?
In 2024, Nathan Charles Nowalk, M.D. had 25 Medicare Part D claims; the average among pulmonary disease physician prescribers was 1,425. 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.