Willard Perez, MD
Internal Medicine Physician · Altus, OK
Willard Perez, MD is an internal medicine physician with a practice address in Altus, Oklahoma, and NPI 1255370227, issued on Jun 5, 2006. Check the license (Oklahoma 24679, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.
- Name
- Willard Perez
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 24679 OK
Self-reported in NPPES; status is on the state search - Practice location
- 201 S Park LN, Altus, OK 73521
- Phone
- (580) 482-9020
- Enumerated
- Jun 5, 2006
- Record last updated
- Feb 8, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (580) 480-3113
- Medicaid IDs
- 200070130A OK
200070130B OH - Entity
- Type 1 · individual
Also registered at 201 S Park LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erica Camilletti, PA-CPhysician Assistant1528481322
- William Newland, MDFamily Medicine Physician1649213299
Verify Willard Perez 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 24679Check 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 internal medicine physician in 2024
21 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% 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.
Internal Medicine Physician providers in Oklahoma
There are 1,115 internal medicine physician records in Oklahoma.
Other internal medicine physician records in Oklahoma
- Abdelrahman AbdallaOklahoma City, OK1104569227
- Al-Ola Abdallah, M.DTulsa, OK1386837151
- Ahmed Abou Elmagd, MDFort Sill, OK1205920717
- Addi Abuelshar, MDAltus, OK1295721678
- Ahmad Adam, MDOklahoma City, OK1750840732
- Chase Adams, MD, MSOklahoma City, OK1194655910
- Wellie Adlaon, M.D.Tishomingo, OK1245326925
- Muneeza Afif, MDTahlequah, OK1740544428
- Pallavi Agarwal, M.D.Tulsa, OK1831249812
- John Agent, DOSallisaw, OK1649217191
Common questions
What is Willard Perez, MD's NPI number?
Willard Perez, MD's National Provider Identifier (NPI) is 1255370227, issued on Jun 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Willard Perez, MD located?
The NPPES record lists a practice address at 201 S Park LN, Altus, OK, 73521. Phone: (580) 482-9020. Providers update this record themselves, so call before visiting.
How can I verify Willard Perez, MD's license?
NPPES lists Oklahoma license number 24679, 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 Willard Perez, MD prescribe under Medicare Part D?
In 2024, Willard Perez, MD had 21 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.