Dr. Robert Dale Arnold , DMD
Dentist - General Practice • Marion, IL
200 W Main St
Marion, IL 629592444
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Robert Arnold is listed in NPPES under Dentist - General Practice.
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NPI assigned on April 26, 2007; this date does not establish years in practice.
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Published CMS data list 216 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Amoxicillin — 76 prescription fills, including refills.
- Acetaminophen-Codeine (Acetaminophen With Codeine) — 48 prescription fills, including refills.
- Clindamycin Hcl — 46 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 5 records in the table · Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 95% of clinicians listed under Dentist - General Practice in Illinois (2024, 2,448 clinicians with data). Median for this group: 41. Middle half: 21 to 79.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 284 in 2020 to 216 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020–2024.
Practice Location & Contact Primary Location
200 W Main St
Marion, IL 629592444
What Public CMS Data Show
Dentist - General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
216 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
$1,206 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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)
No Open Payments records are listed for this clinician for 2019–2025.
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?”
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.
Enrolled in Medicare (PECOS)
Dr. Arnold 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.
Can order Medicare-covered services
CMS lists Dr. Arnold 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.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
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.
Compared with the same specialty in Marion and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 95% of clinicians listed under Dentist - General Practice in Illinois (2024, 2,448 clinicians with data). Median for this group: 41. Middle half: 21 to 79.
Too few clinicians listed under Dentist - General Practice in Marion have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 95% of clinicians listed under Dentist - General Practice in Illinois (2024, 2,448 clinicians with data). Median for this group: $119. Middle half: $59 to $256.
Too few clinicians listed under Dentist - General Practice in Marion have Medicare Part D data for 2024 to compare.
16 active clinicians are listed under Dentist - General Practice with a practice address in Marion, IL (5,281 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Marion
0% of these 16 clinicians have the CMS telehealth indicator.
0% of these 16 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 24% from 284 in 2020 to 216 in 2024.
- 2020: 284
- 2021: 244
- 2022: 233
- 2023: 243
- 2024: 216
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30-day fills
30-day fills decreased 24% from 286 in 2020 to 216 in 2024.
- 2020: 286
- 2021: 244
- 2022: 233
- 2023: 243
- 2024: 216
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Part D drug cost
Part D drug cost decreased 36% from $1,897 in 2020 to $1,206 in 2024.
- 2020: $1,897
- 2021: $1,716
- 2022: $1,531
- 2023: $1,693
- 2024: $1,206
Sources: CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Amoxicillin | Amoxicillin | 76 | 609 | $219.50 | 57 |
| Acetaminophen-Codeine | Acetaminophen With Codeine | 48 | 336 | $375.05 | 35 |
| Clindamycin Hcl | Clindamycin Hcl | 46 | 425 | $471.33 | 34 |
| Cephalexin | Cephalexin | 29 | 191 | $114.31 | 21 |
| Tramadol Hcl | Tramadol Hcl | 17 | 119 | $25.85 | 15 |
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
NUCC Taxonomy Code: 1223G0001X
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - DENTIST
I20200117000027
IL
1557666567
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
NPI status registered as active in NPPES database
Registered at 200 W MAIN ST, MARION, IL 629592444 (Tel: 6189979005)
Registered at 200 W MAIN ST, MARION, IL 629592444 (Tel: 6189979005)
Recorded as ROBERT ARNOLD, DMD
Dentist (license number reported to NPPES: IL 019-021739)
NPI status registered as active in NPPES database
Registered at 200 W MAIN ST, MARION, IL 629592444 (Tel: 6189979005)
Registered at 200 W MAIN ST, MARION, IL 629592444 (Tel: 6189979005)
Recorded as ROBERT ARNOLD, DMD
Dentist
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dentist - General Practices in Marion
- Dr. Eun Jin Lee, DDS
- Dr. John O'keefe, DDS
- Nidhi Priya
- Dr. Bradley Cox, DMD
- Dr. Thomas Woods, DMD
- Dr. B. Barnes, DMD
Mailing Address
200 W Main St
Marion, IL 629592444
Phone: 6189979005