William Efehi Osai
Family Nurse Practitioner · Houston, TX
William Efehi Osai is a family nurse practitioner with a practice address in Houston, Texas, and NPI 1366474769, issued on Jul 7, 2006. Check the license (Texas 600763, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Efehi Osai
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 600763 TX
Self-reported in NPPES; status is on the state search - Practice location
- 8313 Southwest Fwy, Houston, TX 77074
- Phone
- (713) 773-1102
- Enumerated
- Jul 7, 2006
- Record last updated
- Aug 21, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (832) 369-7355
- Medicaid IDs
- 042547209 TX
042547212 TX
042547208 TX
042547210 TX - Medicare enrollment
- Enrolled (PECOS I20040519001591); accepts Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 1999
- Entity
- Type 1 · individual
Also registered at 8313 Southwest Fwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Edwards, DDSDentist1457416851
- Armani HarrisMental Health Counselor1821672924
- Khoa Nguyen, MDFamily Medicine Physician1437146966
- Caroline NjokuAdministrator Registered Nurse1093946014
- Tony Ononye, DNPNurse Practitioner1235527391
- Augustina Ozim-Amakwe, APRNFamily Nurse Practitioner1750178166
Verify William Efehi Osai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 600763Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% more Medicare Part D claims than the average family nurse practitioner in 2024
2,094 Medicare Part D claims for 217 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 75 claims were for opioids.
Most prescribed
- Potassium Chloride91 claims
- Atorvastatin Calcium79 claims
- Eliquis77 claims
- Furosemide67 claims
- Tramadol Hcl66 claims
- Levothyroxine Sodium62 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.
Bills Medicare through one group practice
- Trumen Physicians And Associates PLLCHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
2,588 family nurse practitioner records list a practice address in Houston
They are 2,588 of the 61,221 NPPES records with a practice address in Houston, and 21,242 family nurse practitioner records in Texas.
All 2,588 in Houston → All 21,242 in Texas → Every provider in Houston →
Other family nurse practitioner records in Texas
- Ashley Aaron, FNPWaco, TX1053821504
- Christina Aaron, FNPTexarkana, TX1457787426
- Lori Aaron, FNP-CFrisco, TX1619387974
- Lauren Aase, FNPSheppard Afb, TX1578550299
- Olivia AbabioCypress, TX1588171995
- Lilian Abagwe, NPWylie, TX1396215620
- Vivian Abaidoo, NP-CHouston, TX1760071971
- Zuniley Aballe-Hernandez, FNP-CHouston, TX1952054066
- Jorge Abalo Redden, FNPKaty, TX1932991122
- Jennifer Abalos, FNPPlano, TX1841452984
Common questions
What is William Efehi Osai's NPI number?
William Efehi Osai's National Provider Identifier (NPI) is 1366474769, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Efehi Osai located?
The NPPES record lists a practice address at 8313 Southwest Fwy, Houston, TX, 77074. Phone: (713) 773-1102. Providers update this record themselves, so call before visiting.
How can I verify William Efehi Osai's license?
NPPES lists Texas license number 600763, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does William Efehi Osai prescribe under Medicare Part D?
In 2024, William Efehi Osai had 2,094 Medicare Part D claims for 217 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.