Clay F. Hallberg, DO
Family Medicine Physician · Oelwein, IA
Clay F. Hallberg, DO is a family medicine physician with a practice address in Oelwein, Iowa, and NPI 1811975691, issued on Jan 3, 2006. Check the license (Iowa 02321, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Clay F. Hallberg
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 02321 IA
Self-reported in NPPES; status is on the state search - Practice location
- 204 8TH Ave SE, Oelwein, IA 50662
- Phone
- (319) 283-2651
- Enumerated
- Jan 3, 2006
- Record last updated
- Oct 22, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (319) 283-1430
- Medicaid ID
- 1059535 IA
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →
Verify Clay F. Hallberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 02321Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
34 Medicare Part D claims for 19 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Clay F. Hallberg among 2,336 family medicine physician records in Iowa
Clay F. Hallberg, DO 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 fileNo · 59% of these records are
- Record last updated2007 · 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).
1 family medicine physician record lists a practice address in Oelwein
They are 1 of the 58 NPPES records with a practice address in Oelwein, and 2,336 family medicine physician records in Iowa.
All 2,336 in Iowa → Every provider in Oelwein → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Dale Chapman, DONew Hampton, IA 506591346205010
- Jeremy Cordes, DOParkersburg, IA 506651871942417
- William Durbin, MDParkersburg, IA 506651396732566
- William Halverson, MDNew Hampton, IA 506591801908405
- Nathan Harms, M.D.New Hampton, IA 506591306282132
- Heather Harms, M.D.New Hampton, IA 506591922444751
- Jody Harmsen, M.D.New Hampton, IA 506591720003122
- Jack Kline, MDNew Hampton, IA 506591174742985
Common questions
What is Clay F. Hallberg, DO's NPI number?
Clay F. Hallberg, DO's National Provider Identifier (NPI) is 1811975691, issued on Jan 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Clay F. Hallberg, DO located?
The NPPES record lists a practice address at 204 8TH Ave SE, Oelwein, IA, 50662. Phone: (319) 283-2651. Providers update this record themselves, so call before visiting.
How can I verify Clay F. Hallberg, DO's license?
NPPES lists Iowa license number 02321, 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 Clay F. Hallberg, DO prescribe under Medicare Part D?
In 2024, Clay F. Hallberg, DO had 34 Medicare Part D claims for 19 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.