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

Michael Bert Oppen, CRNA

Individual provider General Practice Registered Nurse · NPI 1346839826

Michael Bert Oppen, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in San Antonio, Texas. Qualified in 2020, 6 years ago. Practices with Community Medicine Associates, a 589-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
6
Licensed in
TX
In the registry since
2021
Specialties on file
2
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

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Practice location Address checks out

4502 Medical Dr
San Antonio, TX 78229-4402
Phone: (210) 358-4000
Fax: (210) 358-4775
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 6225 N State Highway 161 Ste 200, Irving, TX 75038-2241 — (214) 687-0001
  • 8300 Floyd Curl Dr, San Antonio, TX 78229-3931 — (210) 450-9000

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 1029036 (TX)
General Practice Registered Nurse Taxonomy 163WG0000X · Licence 813040 (TX)

Record details

NPI number1346839826
Entity typeIndividual (Type 1)
GenderMale
Credentials CRNA
Sole proprietorNo
NPI enumeratedJanuary 11, 2021
Last updated in NPPESSeptember 9, 2026
Certification dateSeptember 9, 2026

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Community Medicine Associates — 589 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients95
Services billed 107 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

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 $19 1 payment · a meal or drink at a meeting or visit, 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 Community Medicine Associates

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 589 clinicians in the practice; 12 are shown here.

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