MELISSA DAWN GREGORIUS CRNA
NPI 1942440359
Nurse Anesthetist, Certified Registered in Redlands, CA
About Melissa Dawn Gregorius Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MELISSA DAWN GREGORIUS CRNA (NPI 1942440359) is an individual nurse anesthetist, certified registered in Redlands, California, licensed in California (3832) and active in the NPI registry since February 2009. She is affiliated with Cabinet Peaks Medical Center and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Melissa Dawn Gregorius Crna is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
10Medicare enrollment records show Melissa Gregorius reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
King City, CA 93930
- Reassigned Medicare billing, California enrollment
- 156 clinicians in this Medicare group
Salinas, CA 93906
- Reassigned Medicare billing, California enrollment
- 68 clinicians in this Medicare group
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Daly City, CA 94015
- Reassigned Medicare billing, California enrollment
- 33 clinicians in this Medicare group
San Francisco, CA 94104
- Reassigned Medicare billing, California enrollment
- 94 clinicians in this Medicare group
Crescent City, CA 95531
- Reassigned Medicare billing, California enrollment
- 134 clinicians in this Medicare group
Darby, MT 59829
- Reassigned Medicare billing, Montana enrollment
- Also billed through NPI 1659475846 (Montana)
- 154 clinicians in this Medicare group
Kalispell, MT 59901
- Reassigned Medicare billing, Montana enrollment
- 18 clinicians in this Medicare group
Kalispell, MT 59901
- Reassigned Medicare billing, Montana enrollment
- 5 clinicians in this Medicare group
Libby, MT 59923
- Reassigned Medicare billing, Montana enrollment
- Medicare enrollment name: St Johns Lutheran Hospital Inc
- 67 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Cabinet Peaks Medical Center
Critical Access Hospitals · Libby, MTPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92373 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Melissa Gregorius's NPI number?
The NPI number for Melissa Gregorius is 1942440359. It was assigned to this individual provider in the NPPES registry on February 24, 2009.
Where is Melissa Gregorius located?
Melissa Gregorius practices at 915 La Flora Dr, Redlands, CA 92373. The listed phone number is (909) 556-0325.
What is Melissa Gregorius's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Melissa Gregorius enrolled in Medicare?
Yes. Melissa Gregorius is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Melissa Gregorius's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Melissa Gregorius reassigns Medicare benefits to 10 organizations: Southern Monterey County Memorial Hospital (King City, CA), Monterey Anesthesia Professionals (Salinas, CA), Permanente Medical Group Inc (Santa Clara, CA), Anesthesia Care Consultants Inc (Daly City, CA), Mai Nursing Anesthesia PC (San Francisco, CA) and 5 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Melissa Gregorius's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Melissa Gregorius accept?
Health plans from Blue Cross and Blue Shield of Montana list Melissa Gregorius as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Melissa Gregorius affiliated with any hospitals?
According to CMS data, Melissa Gregorius is affiliated with Cabinet Peaks Medical Center.
When was this NPI record last updated?
The NPPES record for Melissa Gregorius was last updated on February 1, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Melissa Dawn Gregorius, CRNA · NPI 1942440359
Nurse Anesthetist, Certified Registered physician in Redlands, California. Individual provider, active in the CMS NPPES registry since February 24, 2009.
## Identity
- **NPI:** 1942440359 (Entity type: Individual)
- **Enumerated:** February 24, 2009
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 3832 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 915 LA FLORA DR, Redlands, CA 92373
- **Phone:** (909) 556-0325
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 10 organizations under Medicare reassignment (form CMS-855R): Southern Monterey County Memorial Hospital (NPI 1821300427, King City, CA); Monterey Anesthesia Professionals (NPI 1073935250, Salinas, CA); Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA); Anesthesia Care Consultants Inc (NPI 1639524309, Daly City, CA); Mai Nursing Anesthesia PC (NPI 1003572769, San Francisco, CA); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** February 1, 2022
---
Source: [NPI Profile](https://npiprofile.com/npi/1942440359) · Data from the CMS NPPES public registry.