Dr. Stephen Robert Thies , DDS
Dentist • Marshalltown, IA
112 E Linn St
Marshalltown, IA 501582901
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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NPI assigned on September 13, 2006; this date does not establish years in practice.
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Published CMS data list 29 Medicare Part D prescriptions, including refills, in 2020.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020. Published rows only; this is not a quality measure.
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Published Part D records, 2020:
- Chlorhexidine Gluconate — 29 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2020. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 93 in 2016 to 29 in 2020.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2016–2020.
Practice Location & Contact Primary Location
112 E Linn St
Marshalltown, IA 501582901
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Des Moines, IA. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Dentist: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
29 standardized 30-day fills in 2020
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
$53 in 2020
The total cost of these prescriptions in 2020, 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, 2020.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019–2025.
NPI first issued
2006
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.
Compared with the same specialty in Marshalltown and Iowa
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Thies are from 2020.
6 active clinicians are listed under Dentist with a practice address in Marshalltown, IA (726 in Iowa).
Addresses are self-reported to NPPES and may be out of date.
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 69% from 93 in 2016 to 29 in 2020.
- 2016: 93
- 2017: 125
- 2018: 135
- 2019: 173
- 2020: 29
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30-day fills
30-day fills decreased 69% from 93 in 2016 to 29 in 2020.
- 2016: 93
- 2017: 127
- 2018: 139
- 2019: 174
- 2020: 29
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Part D drug cost
Part D drug cost went from $280 in 2016 to $53 in 2020.
- 2016: $280
- 2017: $494
- 2018: $527
- 2019: $670
- 2020: $53
Sources: CMS Medicare Part D Prescribers (2020), 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 2020.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Chlorhexidine Gluconate | Chlorhexidine Gluconate | 29 | 530 | $53.30 | — |
Source: CMS Part D by Provider and Drug, 2020; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-06-28NUCC Taxonomy Code: 122300000X
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
Secondary Practice Locations
7506 Hickman Road
Des Moines, IA 50322
Phone: 5152760202
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Dentist - General Practice
Doctor of Dental Surgery
Dentist - General Practice
Doctor of Dental Surgery
Dentist
Doctor of Dental Medicine
Dentist - General Practice
Doctor of Dental Surgery
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 112 E LINN ST, MARSHALLTOWN, IA 501582901 (Tel: 6418446230)
Registered at 1200 UNIVERSITY AVE STE 200, DES MOINES, IA 503142355 (Tel: 5152481447)
NPI status registered as active in NPPES database
Registered at 7506 HICKMAN ROAD, DES MOINES, IA 50322 (Tel: 5152760202)
Registered at 7506 HICKMAN ROAD, DES MOINES, IA 50322 (Tel: 5152760202)
Recorded as STEPHEN THIES, DDS
Dentist (license number reported to NPPES: IA 6242)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dentists in Marshalltown
Healthcare providers in MarshalltownMailing Address
1200 University Ave Ste 200
Des Moines, IA 503142355
Phone: 5152481447