Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William O'Malley, MD

Individual provider Emergency Medicine Physician · NPI 1275528002

Dr. William O'Malley, MD is an Emergency Medicine Physician in Houston, Texas. Practices as a sole proprietor. Licensed in Texas.

Licensed in
TX
In the registry since
2005
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

10655 Steepletop Dr Cypress Fairbanks ER
Houston, TX 77065-4222 Not confirmed with CMS for 14 years — call before visiting
Phone: (281) 897-3150
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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 J8075 (TX)

Record details

NPI number1275528002
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 19, 2005
Last updated in NPPESOctober 20, 2011

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 patients107
Services billed 160 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

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