Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Theodore Voss Holroyd , PA

Physician Assistant • Antioch, IL

Active NPI 1467670901 Individual Practitioner Male Practitioner
Practice location in NPPES

543 Orchard St
Antioch, IL 600023107

Call 8473953322 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

543 Orchard St

Antioch, IL 600023107

Telephone 8473953322
Fax 8473950921
Organization at the Same NPPES Address or Phone
Orchard Medical Center Sc Facility NPI 1306835491

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

30-day fills

2,051 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$9,636 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $16.30 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

NPI first issued

2007

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Theodore Holroyd has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Theodore Holroyd as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Antioch and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

More Part D prescriptions than 80% of clinicians listed under Physician Assistant in Illinois (2024, 2,668 clinicians with data). Median for this group: 203. Middle half: 67 to 595.

Too few clinicians listed under Physician Assistant in Antioch have Medicare Part D data for 2024 to compare.

Part D drug cost

A higher Part D drug cost than 60% of clinicians listed under Physician Assistant in Illinois (2024, 2,668 clinicians with data). Median for this group: $3,018. Middle half: $535 to $48,132.

Too few clinicians listed under Physician Assistant in Antioch have Medicare Part D data for 2024 to compare.

2 active clinicians are listed under Physician Assistant with a practice address in Antioch, IL (4,929 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $16.30.

Manufacturer Payment Nature Product Type Amount ($)
Amgen Inc.
Food and Beverage
In-kind items and services
EVENITY General $16.30

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Amlodipine Besylate Amlodipine Besylate 79 5,910 $498.83 29
Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav 76 696 $618.51 69
Atorvastatin Calcium Atorvastatin Calcium 56 4,754 $283.86 21
Prednisone Prednisone 53 743 $164.75 34
Rosuvastatin Calcium Rosuvastatin Calcium 53 4,618 $730.70 24
Azithromycin Azithromycin 49 239 $156.20 42
Methylprednisolone Methylprednisolone 49 294 $276.03 46
Lisinopril Lisinopril 38 3,330 $239.48 17
Omeprazole Omeprazole 35 1,901 $180.77 —
Meloxicam Meloxicam 31 1,005 $52.81 14
Losartan Potassium Losartan Potassium 31 2,790 $193.90 11
Irbesartan Irbesartan 31 2,790 $295.05 14
Levothyroxine Sodium Levothyroxine Sodium 30 2,480 $401.70 —
Levofloxacin Levofloxacin 27 227 $115.81 24
Lisinopril-Hydrochlorothiazide Lisinopril/Hydrochlorothiazide 27 1,770 $176.87 —
Pantoprazole Sodium Pantoprazole Sodium 27 2,130 $323.51 12
Ciprofloxacin Hcl Ciprofloxacin Hcl 25 200 $204.08 25
Pravastatin Sodium Pravastatin Sodium 25 2,130 $448.92 —
Tamsulosin Hcl Tamsulosin Hcl 25 2,005 $225.66 13
Paxlovid Nirmatrelvir/Ritonavir 22 111 $1,453.98 22
Metformin Hcl Metformin Hcl 19 1,624 $85.41 —
Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst 19 113 $192.88 18
Amoxicillin Amoxicillin 16 136 $85.62 15
Cephalexin Cephalexin 16 142 $107.78 15
Metoprolol Succinate Metoprolol Succinate 16 1,290 $159.65 —

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2019-12-11
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

License # reported to NPPES IL 085001216

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

ORDER AND REFERRING ONLY - PHYSICIAN ASSISTANT

Medicare Enrollment ID

I20160325000249

Enrollment State Jurisdiction

IL

PECOS Control ID

3779880356

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

6 listed
NPI 1902899792

Doctor of Medicine (M.D.)

Briana Aiken , PA

Physician Assistant

NPI 1649506874

Physician Assistant

Dr. John Devaney , MD

Family Medicine

NPI 1538152327

Doctor of Medicine (M.D.)

Dr. David Herman , MD

Internal Medicine

NPI 1053304857

Doctor of Medicine (M.D.)

Raquel Mejos , FNP-C

Nurse Practitioner - Family

NPI 1114516754

Family Nurse Practitioner (Certified)

NPI 1184843328

Doctor of Osteopathic Medicine (D.O.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

8 Historical Events
📍
Updated Business Mailing Address December 11, 2019

Registered at 543 ORCHARD ST, ANTIOCH, IL 600023107 (Tel: 8473953322)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) December 11, 2019

Physician Assistant (license number reported to NPPES: IL 085001216)

âś…
NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) July 08, 2007

Registered at 543 ORCHARD ST, ANTIOCH, IL 600023107 (Tel: 8473953322)

📍
Business Mailing Address (Initial Record) July 08, 2007

Registered at 2645 11TH PL, UNIT 311, KENOSHA, WI 531406407 (Tel: 2624969391)

👤
Provider Name / Credentials (Initial Record) July 08, 2007

Recorded as THEODORE HOLROYD, PA

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Physician Assistant

🟢
Initial NPI Registration & Enumeration April 22, 2007

First registered as active Individual Practitioner in NPPES Database.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1467670901
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: April 22, 2007
Last Update: December 11, 2019
Sole Proprietor: No

Mailing Address

543 Orchard St

Antioch, IL 600023107

Phone: 8473953322

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.