Peter Thomas Marsho, DDS
General Practice Dentistry · Grinnell, IA
Peter Thomas Marsho, DDS is a general practice dentistry with a practice address in Grinnell, Iowa, and NPI 1407386741, issued on Jun 19, 2017. Check the license (Iowa DDS-09421, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Peter Thomas Marsho
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- DDS-09421 IA
Self-reported in NPPES; status is on the state search - Practice location
- 825 Broad St, Grinnell, IA 50112
- Phone
- (641) 236-6169
- Enumerated
- Jun 19, 2017
- Record last updated
- Mar 17, 2018 (not updated in 8 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 1,239 in Iowa → Look up another NPI →
Also registered at 825 Broad St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Cunningham, D.D.S.General Practice Dentistry1487782371
- Christopher Marsho, DDSGeneral Practice Dentistry1235707159
- Matthew Miller, D.M.D.General Practice Dentistry1184752099
- Christopher Roudabush, D.D.S.General Practice Dentistry1326176231
- Lyle Roudabush, D.D.S.General Practice Dentistry1861520652
Verify Peter Thomas Marsho in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license DDS-09421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average general practice dentistry in 2024
71 Medicare Part D claims for 50 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin50 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: $67.28
3 payments; by number, the most common kind was food and beverage; the largest payer was Align Technology, Inc. The 41,669 providers of this specialty with any payment received $597.01 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.
Peter Thomas Marsho among 1,239 general practice dentistry records in Iowa
Peter Thomas Marsho, DDS is one of 1,239 general practice dentistry records with a practice address in Iowa. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileNo · 1% of these records are
- Record last updated2018 · 76% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 general practice dentistry records list a practice address in Grinnell
They are 9 of the 172 NPPES records with a practice address in Grinnell, and 1,239 general practice dentistry records in Iowa.
All 1,239 in Iowa → Every provider in Grinnell → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Scott Baumann, DDS, PCGrinnell, IA 501121306910658
- David Cunningham, D.D.S.Grinnell, IA 501121487782371
- Julie Hendricks, DDSGrinnell, IA 501121790040467
- Christopher Marsho, DDSGrinnell, IA 501121235707159
- Matthew Miller, D.M.D.Grinnell, IA 501121184752099
- Christopher Roudabush, D.D.S.Grinnell, IA 501121326176231
- Lyle Roudabush, D.D.S.Grinnell, IA 501121861520652
- David Smith, D.D.S.Grinnell, IA 501121104954882
Common questions
What is Peter Thomas Marsho, DDS's NPI number?
Peter Thomas Marsho, DDS's National Provider Identifier (NPI) is 1407386741, issued on Jun 19, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Peter Thomas Marsho, DDS located?
The NPPES record lists a practice address at 825 Broad St, Grinnell, IA, 50112. Phone: (641) 236-6169. Providers update this record themselves, so call before visiting.
How can I verify Peter Thomas Marsho, DDS's license?
NPPES lists Iowa license number DDS-09421, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Peter Thomas Marsho, DDS prescribe under Medicare Part D?
In 2024, Peter Thomas Marsho, DDS had 71 Medicare Part D claims for 50 beneficiaries; the average among general practice dentistry prescribers was 83. 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.