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

Melissa Dawn Gregorius, CRNA

Individual provider Registered Nurse · NPI 1942440359

Melissa Dawn Gregorius, CRNA is a Certified Registered Nurse Anesthetist (CRNA) in Redlands, California. Qualified in 2009, 17 years ago. Practices with Mai Nursing Anesthesia PC, a 34-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
17
Licensed in
CA
In the registry since
2009
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

915 La Flora Dr
Redlands, CA 92373
Phone: (909) 556-0325
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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 3832 (CA)
Registered Nurse Taxonomy 163W00000X · Licence 595317 (CA)

Record details

NPI number1942440359
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedFebruary 24, 2009
Last updated in NPPESFebruary 1, 2022
Certification dateFebruary 1, 2022
Mailing address400 N Pepper Ave, Colton, CA 92324-1801

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Mai Nursing Anesthesia Pc — 34 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Redlands