William D. Clapp, MD
Pulmonary Disease Physician · Chicago, IL
William D. Clapp, MD is a pulmonary disease physician with a practice address in Chicago, Illinois, and NPI 1174721229, issued on Jul 10, 2007. Check the license (Illinois 036091299, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William D. Clapp
- Credential
- MD
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License numbers
- 036091299 IL
036-091299 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2160 W Ogden Ave, Chicago, IL 60612
- Phone
- (312) 746-6003
- Enumerated
- Jul 10, 2007
- Record last updated
- Apr 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (312) 746-5134
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 617 in Illinois → Look up another NPI →
Also registered at 2160 W Ogden Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Kemble, M.D.Infectious Disease Physician1528257052
Verify William D. Clapp 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 036091299Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
883 Medicare Part D claims for 107 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 42% of claims. 11 claims were for opioids.
Most prescribed
- Albuterol Sulfate Hfa161 claims
- Prednisone125 claims
- Incruse Ellipta48 claims
- Spiriva Handihaler45 claims
- Breo Ellipta38 claims
- Ventolin Hfa35 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
William D. Clapp among 617 pulmonary disease physician records in Illinois
William D. Clapp, MD 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 46% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2021 · 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
- Robert Balk, M.D.Chicago, IL 606121134173503
- Patrick Belvitch, M.D.Chicago, IL 606121326249228
- David Gurka, M.D.Chicago, IL 606121255385514
- Jeffrey Jacobson, M.D.Chicago, IL 606121609937432
- Howard Jaffe, M.D.Chicago, IL 606121285724765
- Omar Lateef, D.O.Chicago, IL 606121295789527
- Richard Lenhardt, M.D.Chicago, IL 606121831141936
- Narayana Nagubadi, M.D.Chicago, IL 606121295782365
Common questions
What is William D. Clapp, MD's NPI number?
William D. Clapp, MD's National Provider Identifier (NPI) is 1174721229, issued on Jul 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William D. Clapp, MD located?
The NPPES record lists a practice address at 2160 W Ogden Ave, Chicago, IL, 60612. Phone: (312) 746-6003. Providers update this record themselves, so call before visiting.
How can I verify William D. Clapp, MD's license?
NPPES lists Illinois license number 036091299, 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 William D. Clapp, MD prescribe under Medicare Part D?
In 2024, William D. Clapp, MD had 883 Medicare Part D claims for 107 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
What is William D. Clapp, MD's MIPS final score?
The 2023 MIPS final score is 84.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.