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

Gregory Bayhan

Individual provider Certified Registered Nurse Anesthetist · NPI 1477970002

Gregory Bayhan is registered under Certified Registered Nurse Anesthetist (CRNA) in Los Angeles, California. Qualified in 2013, 13 years ago. Practices with Mission Nursing Anesthesia Inc, a 41-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
13
Licensed in
CA
In the registry since
2014
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Practice location Address checks out

1401 S Grand Ave
Los Angeles, CA 90015-3010 Not confirmed with CMS for 12 years — call before visiting
Phone: (213) 748-2411
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 766134 (CA)

Record details

NPI number1477970002
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 20, 2014
Last updated in NPPESMarch 20, 2014

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Mission Nursing Anesthesia Inc — 41 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 $23 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 Mission Nursing Anesthesia Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 41 clinicians in the practice; 12 are shown here.

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