William J. Kok, MD
Family Medicine Physician · Hollis, OK
William J. Kok, MD is a family medicine physician with a practice address in Hollis, Oklahoma, and NPI 1033252804, issued on Feb 14, 2007. Check the license (Oklahoma 14864, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- William J. Kok
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 14864 OK
Self-reported in NPPES; status is on the state search - Practice location
- 400 E Sycamore St, Hollis, OK 73550
- Phone
- (580) 688-2800
- Enumerated
- Feb 14, 2007
- Record last updated
- Nov 30, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (580) 688-2193
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,303 in Oklahoma → Look up another NPI →
Also registered at 400 E Sycamore St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mason BeaverCase Manager/Care Coordinator1881499283
- Jada Bost, LPCMental Health Counselor1619520798
- Justin Cole, DOCTOR OF PHARMACYPharmacist1134744469
- Cayden CrumeCounselor1578399051
- Erica De Santos, A.P.R.NPrimary Care Nurse Practitioner1396355350
- William Estes, DDSDentist1619081189
Verify William J. Kok in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
Search for license 14864Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average family medicine physician in 2024
179 Medicare Part D claims for 51 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of 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.
William J. Kok among 2,303 family medicine physician records in Oklahoma
William J. Kok, MD is one of 2,303 family medicine physician records with a practice address in Oklahoma. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 46% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2012 · 60% 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 Oklahoma 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 Hollis
They are 2 of the 22 NPPES records with a practice address in Hollis, and 2,303 family medicine physician records in Oklahoma.
All 2,303 in Oklahoma → Every provider in Hollis → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Akram Abraham, M.D.Hollis, OK 735501609857754
- Trenton Mefford, DOFrederick, OK 735421982670816
- Lewis LitwackElgin, OK 735381760566293
- Anthony Orme, MDElgin, OK 735381326033259
- Charles Dickerson, MDDuncan, OK 735331962433748
- Jacob Fuller, DODuncan, OK 735331669094371
- Angela Gibbons, PHYSICIAN ASSISTANTDuncan, OK 735331871192633
- Allon Gillispie, DODuncan, OK 735331508246570
Common questions
What is William J. Kok, MD's NPI number?
William J. Kok, MD's National Provider Identifier (NPI) is 1033252804, issued on Feb 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William J. Kok, MD located?
The NPPES record lists a practice address at 400 E Sycamore St, Hollis, OK, 73550. Phone: (580) 688-2800. Providers update this record themselves, so call before visiting.
How can I verify William J. Kok, MD's license?
NPPES lists Oklahoma license number 14864, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William J. Kok, MD prescribe under Medicare Part D?
In 2024, William J. Kok, MD had 179 Medicare Part D claims for 51 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.