Timothy Piearson, D.O.
Family Medicine Physician · Greenfield, IA
Timothy Piearson, D.O. is a family medicine physician with a practice address in Greenfield, Iowa, and NPI 1740233659, issued on May 19, 2006. Check the license (Iowa 3543, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Timothy Piearson
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 3543 IA
Self-reported in NPPES; status is on the state search - Practice location
- 609 SE Kent St, Greenfield, IA 50849
- Phone
- (641) 743-6189
- Enumerated
- May 19, 2006
- Record last updated
- Nov 17, 2022
- Fax
- (641) 743-6217
- Medicaid ID
- 1432153 IA
- Medicare enrollment
- Enrolled (PECOS I20040519000996); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2002
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →
Also registered at 609 SE Kent St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Black, PAPhysician Assistant1801074794
- Marvel Blazek, ARNPFamily Nurse Practitioner1275587701
- Brittany ChristoffersenOccupational Therapist1710647599
- Jenna Evans, PA-CPhysician Assistant1659819233
- Traci Goltz, DPTPhysical Therapist1003224544
- Rachel Hall, PHARMDPharmacist1659838035
Verify Timothy Piearson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 3543Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average family medicine physician in 2024
11,620 Medicare Part D claims for 551 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 450 claims were for opioids.
Most prescribed
- Atorvastatin Calcium521 claims
- Levothyroxine Sodium477 claims
- Lisinopril417 claims
- Omeprazole355 claims
- Metformin Hcl338 claims
- Losartan Potassium335 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.
One hospital affiliation
- Adair County Memorial HospitalStuart, IA · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Timothy Piearson among 2,336 family medicine physician records in Iowa
Timothy Piearson, D.O. is one of 2,336 family medicine physician records with a practice address in Iowa. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 48% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2002 · median 2006 among the 1,367 with a school on file
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 family medicine physician records list a practice address in Greenfield
They are 2 of the 31 NPPES records with a practice address in Greenfield, and 2,336 family medicine physician records in Iowa.
All 2,336 in Iowa → Every provider in Greenfield → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Demi O'Brien, MDGreenfield, IA 508491700409828
- Linda Robinson, DOLenox, IA 508511235124470
- Dwain Crain, DOMount Ayr, IA 508541649250002
- Haroon Ferhut, M.D.Mount Ayr, IA 508541336533520
- Erin Leonard, ARNPMount Ayr, IA 508541548789043
- Jerald Phipps, DOMount Ayr, IA 508541043288756
- Bruce Ricker, D.O.Mount Ayr, IA 508541851441760
- Kathleen Willcox, D.O.Mount Ayr, IA 508541205218112
Common questions
What is Timothy Piearson, D.O.'s NPI number?
Timothy Piearson, D.O.'s National Provider Identifier (NPI) is 1740233659, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Piearson, D.O. located?
The NPPES record lists a practice address at 609 SE Kent St, Greenfield, IA, 50849. Phone: (641) 743-6189. Providers update this record themselves, so call before visiting.
How can I verify Timothy Piearson, D.O.'s license?
NPPES lists Iowa license number 3543, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Timothy Piearson, D.O. prescribe under Medicare Part D?
In 2024, Timothy Piearson, D.O. had 11,620 Medicare Part D claims for 551 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.