Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

William O Appiah, MD

Individual provider Emergency Medicine Physician · NPI 1215137559

William O Appiah, MD practises Emergency Medicine in Pasadena, Texas. Qualified in 2004, 22 years ago. Practices with Emergency Services of Texas PA, a 60-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
22
Licensed in
TX
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4000 Spencer Hwy
Pasadena, TX 77504-1202 Not confirmed with CMS for 16 years — call before visiting
Phone: (713) 359-2000
Fax: (713) 359-1004
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence M6502 (TX)

Record details

NPI number1215137559
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 24, 2007
Last updated in NPPESMarch 12, 2010

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Emergency Services Of Texas Pa — 60 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients172
Services billed 205 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Hca Houston Healthcare Tomball Hospital · Tomball, TX · listed as Tomball Hospital Authority
  • Hca Houston Healthcare Kingwood Hospital · Kingwood, TX
  • Hca Houston Healthcare Medical Center Hospital · Houston, TX
  • Hca Houston Healthcare West Hospital · Houston, TX
  • Las Palmas Medical Center A Campus Of Lpds Healthc Hospital · El Paso, TX

Colleagues at Emergency Services of Texas PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 60 clinicians in the practice; 12 are shown here.

Other providers in Pasadena