MELISSA ANNE CALLAGHAN CRNA
NPI 1841364742
Nurse Anesthetist, Certified Registered in Los Angeles, CA
About Melissa Anne Callaghan Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MELISSA ANNE CALLAGHAN CRNA (NPI 1841364742) is an individual nurse anesthetist, certified registered in Los Angeles, California, licensed in California (3297) and active in the NPI registry since November 2006. She is a graduate of Other (2005).
NPPES Registry Identity
Specialties & Licenses
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 Anne Callaghan 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
4Medicare enrollment records show Melissa Callaghan reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90015
- Reassigned Medicare billing, California enrollment
- 76 clinicians in this Medicare group
Marina Del Rey, CA 90292
- Reassigned Medicare billing, California enrollment
- 13 clinicians in this Medicare group
Encino, CA 91436
- Reassigned Medicare billing, California enrollment
- 37 clinicians in this Medicare group
Tarzana, CA 91356
- Reassigned Medicare billing, California enrollment
- 44 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 90033 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
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 Callaghan's NPI number?
The NPI number for Melissa Callaghan is 1841364742. It was assigned to this individual provider in the NPPES registry on November 20, 2006.
Where is Melissa Callaghan located?
Melissa Callaghan practices at 1500 San Pablo St 4th Floor, Los Angeles, CA 90033. The listed phone number is (323) 442-7400.
What is Melissa Callaghan's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Melissa Callaghan enrolled in Medicare?
Yes. Melissa Callaghan 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 Callaghan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Melissa Callaghan reassigns Medicare benefits to 4 organizations: Socal Anesthesia Solutions, Inc (Los Angeles, CA), Wang Anesthesia Nursing Management Inc (Marina Del Rey, CA), New Vision Nurse Anesthesia Group Inc (Encino, CA) and Scq Anesthesia A Professional Nursing Corporation (Tarzana, CA). 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 Callaghan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Melissa Callaghan was last updated on September 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 Anne Callaghan, CRNA · NPI 1841364742
Nurse Anesthetist, Certified Registered physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since November 20, 2006.
## Identity
- **NPI:** 1841364742 (Entity type: Individual)
- **Enumerated:** November 20, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 3297 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 SAN PABLO ST, 4TH FLOOR, Los Angeles, CA 90033-5313
- **Phone:** (323) 442-7400 · **Fax:** (323) 442-7411
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Socal Anesthesia Solutions, Inc (NPI 1407596901, Los Angeles, CA); Wang Anesthesia Nursing Management Inc (NPI 1245792647, Marina Del Rey, CA); New Vision Nurse Anesthesia Group Inc (NPI 1609654102, Encino, CA); Scq Anesthesia A Professional Nursing Corporation (NPI 1689381105, Tarzana, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** September 10, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1841364742) · Data from the CMS NPPES public registry.