Theodore Voss Holroyd, PA
Physician Assistant · Antioch, IL
Theodore Voss Holroyd, PA is a physician assistant with a practice address in Antioch, Illinois, and NPI 1467670901, issued on Apr 22, 2007. Check the license (Illinois 085001216, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Theodore Voss Holroyd
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 085001216 IL
Self-reported in NPPES; status is on the state search - Practice location
- 543 Orchard St, Antioch, IL 60002
- Phone
- (847) 395-3322
- Enumerated
- Apr 22, 2007
- Record last updated
- Dec 11, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (847) 395-0921
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,926 in Illinois → Look up another NPI →
Also registered at 543 Orchard St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Briana Aiken, PAPhysician Assistant1649506874
- Donna Baker, PT, DPTPhysical Therapist1770252199
- Steven Colletti, PTPhysical Therapist1356426084
- John Devaney, MDFamily Medicine Physician1538152327
- Jennifer Fremgen, PTPhysical Therapist1528159928
Verify Theodore Voss Holroyd in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 085001216Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% more Medicare Part D claims than the average physician assistant in 2024
1,539 Medicare Part D claims for 496 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate79 claims
- Amoxicillin-Clavulanate Potass76 claims
- Atorvastatin Calcium56 claims
- Prednisone53 claims
- Rosuvastatin Calcium53 claims
- Azithromycin49 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.
Theodore Voss Holroyd among 4,926 physician assistant records in Illinois
Theodore Voss Holroyd, PA is one of 4,926 physician assistant records with a practice address in Illinois. 82% 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 12% of them.
- NPI issued2007 · 12% of these records are older, 83% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2019 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 physician assistant records list a practice address in Antioch
They are 2 of the 186 NPPES records with a practice address in Antioch, and 4,926 physician assistant records in Illinois.
All 4,926 in Illinois → Every provider in Antioch → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Briana Aiken, PAAntioch, IL 600021649506874
- Kathryn Benson, PA - CArlington Heights, IL 600041386824613
- Ruben Bermudez, PAArlington Heights, IL 600041861662140
- Liesl Blethen, PA-CArlington Heights, IL 600041730600271
- Colleen DonahueArlington Heights, IL 600041033769468
- Kristyn Fara, PAArlington Heights, IL 600041962740852
- Danielle Gudmestad, MMS, PA-CArlington Heights, IL 600041982999223
- Julia Kocemba, PA-CArlington Heights, IL 600041851865257
Common questions
What is Theodore Voss Holroyd, PA's NPI number?
Theodore Voss Holroyd, PA's National Provider Identifier (NPI) is 1467670901, issued on Apr 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Theodore Voss Holroyd, PA located?
The NPPES record lists a practice address at 543 Orchard St, Antioch, IL, 60002. Phone: (847) 395-3322. Providers update this record themselves, so call before visiting.
How can I verify Theodore Voss Holroyd, PA's license?
NPPES lists Illinois license number 085001216, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Theodore Voss Holroyd, PA prescribe under Medicare Part D?
In 2024, Theodore Voss Holroyd, PA had 1,539 Medicare Part D claims for 496 beneficiaries; the average among physician assistant prescribers was 830. 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.