Clyde W. Dayhoff, DO
Family Medicine Physician · Herscher, IL
Clyde W. Dayhoff, DO is a family medicine physician with a practice address in Herscher, Illinois, and NPI 1255417382, issued on Oct 31, 2006. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Clyde W. Dayhoff
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- Practice location
- 692 N Maple St, Herscher, IL 60941
- Phone
- (815) 426-2020
- Enumerated
- Oct 31, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100220000403); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 1995
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 692 N Maple St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Barker, NPFamily Nurse Practitioner1659736437
- Megan Brown, NP-CFamily Nurse Practitioner1336754167
- Jennifer Christenson, PAMedical Physician Assistant1568613412
- Patrick Long, MDFamily Medicine Physician1780206094
- Hashim Zaidi, M.D.Family Medicine Physician1821005448
Verify Clyde W. Dayhoff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 83% of the cost of the top drugs
4,300 Medicare Part D claims for 390 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 159 claims were for opioids.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Levothyroxine Sodium258 claims
- Atorvastatin Calcium200 claims
- Lisinopril131 claims
- Simvastatin130 claims
- Bisoprolol-Hydrochlorothiazide106 claims
- Arexvy101 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: $1,109.89
63 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 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.
Bills Medicare through one group practice
- Medical Group OF Kankakee CountyBradley, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clyde W. Dayhoff among 6,215 family medicine physician records in Illinois
Clyde W. Dayhoff, DO is one of 6,215 family medicine physician records with a practice address in Illinois. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1995 · median 2006 among the 3,714 with a school on file
- Record last updated2007 · 54% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 family medicine physician records list a practice address in Herscher
They are 4 of the 14 NPPES records with a practice address in Herscher, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Herscher → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jeffery Long, MDHerscher, IL 609411932284700
- Patrick Long, MDHerscher, IL 609411780206094
- Hashim Zaidi, M.D.Herscher, IL 609411821005448
- Kristina DakisHoopeston, IL 609421013303890
- Larry De Pedro, MDHoopeston, IL 609421861416455
- Frantz Felix, MD, FAAFPHoopeston, IL 609421760793178
- Cylie Lappin, MSN, APRN, FNP-CHoopeston, IL 609421972490787
- Teresa Marganski, MDHoopeston, IL 609421346261146
Common questions
What is Clyde W. Dayhoff, DO's NPI number?
Clyde W. Dayhoff, DO's National Provider Identifier (NPI) is 1255417382, issued on Oct 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Clyde W. Dayhoff, DO located?
The NPPES record lists a practice address at 692 N Maple St, Herscher, IL, 60941. Phone: (815) 426-2020. Providers update this record themselves, so call before visiting.
How can I verify Clyde W. Dayhoff, DO's license?
Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Clyde W. Dayhoff, DO prescribe under Medicare Part D?
In 2024, Clyde W. Dayhoff, DO had 4,300 Medicare Part D claims for 390 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.