Troy B. Shaffer, D.O.
Emergency Medicine Physician · McHenry, IL
Troy B. Shaffer, D.O. is an emergency medicine physician with a practice address in McHenry, Illinois, and NPI 1285665661, issued on Jul 5, 2006. Check the license (Illinois 036095672, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Troy B. Shaffer
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 036095672 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4201 W Medical Center Dr, McHenry, IL 60050
- Phone
- (815) 338-6600
- Enumerated
- Jul 5, 2006
- Record last updated
- Apr 3, 2026
- Medicaid ID
- 36095672 IL
- Medicare enrollment
- Enrolled (PECOS I20061108000610); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 4201 W Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elias AbousaadInternal Medicine Physician1952751877
- Kimberly Ackert, PA-CPhysician Assistant1538172739
- Van AliEmergency Medicine Physician1457674582
- Wasfia Alikhan, M.D.Diagnostic Radiology Physician1902291834
- Yasser Almadani, MDStudent in an Organized Health Care Education/Training Program1881497634
- Altaf Aman, M.D.Hospitalist Physician1942381132
Verify Troy B. Shaffer 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 036095672Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% more Medicare Part D claims than the average emergency medicine physician in 2024
300 Medicare Part D claims for 235 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 42 claims were for opioids.
Most prescribed
- Prednisone36 claims
- Hydrocodone-Acetaminophen28 claims
- Azithromycin27 claims
- Doxycycline Hyclate23 claims
- Nitrofurantoin Mono-Macro21 claims
- Amoxicillin-Clavulanate Potass19 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: $121.88
1 payment: food and beverage; the largest payer was Genzyme Corporation. The 12,335 providers of this specialty with any payment received $953.79 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
- Rockford Health PhysiciansRockford, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Troy B. Shaffer among 3,291 emergency medicine physician records in Illinois
Troy B. Shaffer, D.O. is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 68% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1995 · median 2012 among the 1,867 with a school on file
- Record last updated2026 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 emergency medicine physician records list a practice address in McHenry
They are 30 of the 1,852 NPPES records with a practice address in McHenry, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in McHenry → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Peggy Banks, D.O.McHenry, IL 600501518922962
- Theodore Banks, MDMcHenry, IL 600501790723500
- Pardeep Bhanot, MDMcHenry, IL 600501477521797
- Timothy Bollinger, DOMcHenry, IL 600501629013313
- Daniel Campagna, MDMcHenry, IL 600501437262557
- Linda Furlan, MDMcHenry, IL 600501780639716
- Oscar HabhabMcHenry, IL 600501609989813
- Brian Jokhy, M.D.McHenry, IL 600501508802554
Common questions
What is Troy B. Shaffer, D.O.'s NPI number?
Troy B. Shaffer, D.O.'s National Provider Identifier (NPI) is 1285665661, issued on Jul 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Troy B. Shaffer, D.O. located?
The NPPES record lists a practice address at 4201 W Medical Center Dr, McHenry, IL, 60050. Phone: (815) 338-6600. Providers update this record themselves, so call before visiting.
How can I verify Troy B. Shaffer, D.O.'s license?
NPPES lists Illinois license number 036095672, 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 Troy B. Shaffer, D.O. prescribe under Medicare Part D?
In 2024, Troy B. Shaffer, D.O. had 300 Medicare Part D claims for 235 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.