Brian Casaclang, D.O.
Family Medicine Physician · Chicago, IL
Brian Casaclang, D.O. is a family medicine physician with a practice address in Chicago, Illinois, and NPI 1093740490, issued on Jul 12, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Brian Casaclang
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- Practice location
- 2400 N Sheffield Ave, Chicago, IL 60614
- Phone
- (773) 880-0320
- Enumerated
- Jul 12, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100109000255); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 2400 N Sheffield Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Altman, BCBABehavior Analyst1013661990
- Brett BussanPhysical Therapist1861556201
- Bryan Carlson, M.S., OTR/L, CHTOccupational Therapist1669599668
- Jorge Catalan, OTOccupational Therapist1568503050
- Adelaide Cooke Sperling, DPTPhysical Therapist1366125494
- Rae'Lyn Cooper, PTPhysical Therapist1184049496
Verify Brian Casaclang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average family medicine physician in 2024
2,661 Medicare Part D claims for 162 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 75 claims were for opioids.
Most prescribed
- Atorvastatin Calcium182 claims
- Montelukast Sodium91 claims
- Hydrochlorothiazide90 claims
- Amlodipine Besylate81 claims
- Testosterone67 claims
- Ozempic63 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: $335.07
15 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 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 one group practice
- Premise Health OF Illinois Medical PCCountryside, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Casaclang among 6,215 family medicine physician records in Illinois
Brian Casaclang, D.O. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1994 · median 2006 among the 3,714 with a school on file
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,593 family medicine physician records list a practice address in Chicago
They are 1,593 of the 63,379 NPPES records with a practice address in Chicago, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Chicago → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Arons, D.O.Chicago, IL 606141558351643
- Jane Bang, M.D.Chicago, IL 606141588740955
- Christopher Boisselle, M.D.Chicago, IL 606141568780740
- Andrew Guzman, MDChicago, IL 606141417368226
- Erica Hartl, MDChicago, IL 606141942239447
- Karl Kirby, M.D.Chicago, IL 606141760416531
- Marla Kushner, DOChicago, IL 606141538119268
- Kew-Jung Lee, M.D.Chicago, IL 606141669463618
Common questions
What is Brian Casaclang, D.O.'s NPI number?
Brian Casaclang, D.O.'s National Provider Identifier (NPI) is 1093740490, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian Casaclang, D.O. located?
The NPPES record lists a practice address at 2400 N Sheffield Ave, Chicago, IL, 60614. Phone: (773) 880-0320. Providers update this record themselves, so call before visiting.
How can I verify Brian Casaclang, D.O.'s license?
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 Brian Casaclang, D.O. prescribe under Medicare Part D?
In 2024, Brian Casaclang, D.O. had 2,661 Medicare Part D claims for 162 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.