Michael Dee Holyoak, DO
Endocrinology, Diabetes & Metabolism Physician · Meridian, ID
Michael Dee Holyoak, DO is an endocrinology, diabetes & metabolism physician with a practice address in Meridian, Idaho, and NPI 1679968051, issued on Apr 1, 2015. Check the license (Idaho O-1387, as entered in NPPES) on the Idaho Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Michael Dee Holyoak
- Credential
- DO
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- O-1387 ID
Self-reported in NPPES; status is on the state search - Practice location
- 520 S Eagle RD Ste 1234, Meridian, ID 83642
- Phone
- (208) 429-0300
- Enumerated
- Apr 1, 2015
- Record last updated
- Jul 8, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (208) 429-0305
- Medicare enrollment
- Enrolled (PECOS I20200728003661); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2015
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 22 in Idaho → Look up another NPI →
Also registered at 520 S Eagle RD Ste 1234
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cody Davies, NPFamily Nurse Practitioner1417377870
- Kylee Graef, PAPhysician Assistant1538679840
- Brian Martin, PAPhysician Assistant1144542457
- Julie Schommer, D.O.Endocrinology, Diabetes & Metabolism Physician1649654054
Verify Michael Dee Holyoak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIdaho Board of Medicine
Search for license O-1387Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,727 Medicare Part D claims for 279 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Levothyroxine Sodium354 claims
- Methimazole112 claims
- Rosuvastatin Calcium78 claims
- Mounjaro77 claims
- Hydrocortisone59 claims
- Repatha Sureclick51 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: $299.63
4 payments; by number, the most common kind was food and beverage; the largest payer was Tandem Diabetes Care, Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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
- St Lukes Clinic-Treasure Valley LLCMeridian, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Dee Holyoak among 22 endocrinology, diabetes & metabolism physician records in Idaho
Michael Dee Holyoak, DO is one of 22 endocrinology, diabetes & metabolism physician records with a practice address in Idaho. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 86% of them.
- NPI issued2015 · 86% of these records are older, 5% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2015 · median 2006 among the 15 with a school on file
- Record last updated2020 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Idaho practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Idaho
There are 22 endocrinology, diabetes & metabolism physician records in Idaho.
All 22 in Idaho → Every provider in Meridian → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Robert Ennis, MDMeridian, ID 836421366647729
- Lynn Ge-Zerbe, M.D.Meridian, ID 836421003881970
- Julie Schommer, D.O.Meridian, ID 836421649654054
- Johannes Veldhuis, MDMeridian, ID 836421477530335
- Katy Connley, FNP-CEagle, ID 836161679980551
- Kenneth WilhelmNampa, ID 836871053301416
- Richard Christensen, MDBoise, ID 837021346272127
- Beverly Kocarnik, MD, MPHBoise, ID 837021962666438
Common questions
What is Michael Dee Holyoak, DO's NPI number?
Michael Dee Holyoak, DO's National Provider Identifier (NPI) is 1679968051, issued on Apr 1, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Michael Dee Holyoak, DO located?
The NPPES record lists a practice address at 520 S Eagle RD Ste 1234, Meridian, ID, 83642. Phone: (208) 429-0300. Providers update this record themselves, so call before visiting.
How can I verify Michael Dee Holyoak, DO's license?
NPPES lists Idaho license number O-1387, as entered by the provider. Search the Idaho Board of Medicine at https://dopl.idaho.gov/bom/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Dee Holyoak, DO prescribe under Medicare Part D?
In 2024, Michael Dee Holyoak, DO had 1,727 Medicare Part D claims for 279 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.