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

MS. Thao Messinger, PAC

Individual provider Surgical Physician Assistant · NPI 1992733307

MS. Thao Messinger, PAC is a Physician Assistant in Torrance, California. Graduated from At Still Un of Hlth Sciences, Col of Osteo Med, Mesa in 2004, 22 years ago. Practices with City of Hope Medical Group of Arizona LLC, a 157-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona and California.

Years since qualifying
22
Trained at
At Still Un of Hlth Sciences, Col of Osteo Med, Mesa
Licensed in
AZ, CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
PAC — Physician Assistant, Certified
A physician assistant holding current national certification; usually written PA-C.

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Practice location Address checks out

23365 Hawthorne Blvd Ste 102
Torrance, CA 90505-3736
Phone: (480) 586-7542
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3200 S Gilbert Rd, Chandler, AZ 85286-5107 — (480) 471-6404

Specialties & licences

Surgical Physician Assistant (primary) Taxonomy 363AS0400X · Licence 56733 (CA)
Physician Assistant Taxonomy 363A00000X · Licence 3321 (AZ)

Record details

NPI number1992733307
Entity typeIndividual (Type 1)
GenderFemale
Credentials PAC
Sole proprietorNo
NPI enumeratedJune 28, 2006
Last updated in NPPESJanuary 21, 2021
Certification dateJanuary 21, 2021

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolAT STILL UN OF HLTH SCIENCES, COL OF OSTEO MED, MESA
Graduated 2004 (22 years in practice)
Group practice City Of Hope Medical Group Of Arizona Llc — 157 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $441 10 payments · a meal or drink at a meeting or visit, not a fee
Education $100 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at City of Hope Medical Group of Arizona LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 157 clinicians in the practice; 12 are shown here.

Other providers in Torrance