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

Dr. William Michael Munion, MD

Individual provider Emergency Medicine Physician · NPI 1255829784

Dr. William Michael Munion, MD practises Emergency Medicine in Corpus Christi, Texas. Graduated from University of Arizona College of Medicine in 2018, 8 years ago. Practices with Sonoma Valley Emergency Physicians Medical Group, Inc, a 5-clinician group and accepts Medicare assignment. Licensed in Arizona and Texas.

Years since qualifying
8
Trained at
University of Arizona College of Medicine
Licensed in
AZ, TX
In the registry since
2018
Specialties on file
3
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

600 Elizabeth St
Corpus Christi, TX 78404-2235
Phone: (361) 861-1864
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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 63049 (AZ)
Emergency Medicine Physician Taxonomy 207P00000X · Licence S4197 (TX)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1255829784
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 30, 2018
Last updated in NPPESJune 21, 2021
Certification dateJune 21, 2021

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF ARIZONA COLLEGE OF MEDICINE
Graduated 2018 (8 years in practice)
Group practice Sonoma Valley Emergency Physicians Medical Group, Inc — 5 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 patients138
Services billed 167 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Colleagues at Sonoma Valley Emergency Physicians Medical Group, Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 5 clinicians in the practice; 2 are shown here.

Other providers in Corpus Christi