DR. MELLISA MARIE CHRISTY-ARONSON M.D.
NPI 1255593794
Anesthesiology in Ada, OK
About Dr. Mellisa Marie Christy-aronson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MELLISA MARIE CHRISTY-ARONSON M.D. (NPI 1255593794) is an individual anesthesiology provider in Ada, Oklahoma, licensed in Oklahoma (32473) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Ada, and is a graduate of Other (2002).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Mellisa Marie Christy-aronson M.d. 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
2Medicare enrollment records show Mellisa Christy-aronson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ardmore, OK 73401
- Reassigned Medicare billing, Oklahoma enrollment
- 28 clinicians in this Medicare group
Elk City, OK 73644
- Reassigned Medicare billing, Oklahoma enrollment
- 108 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Ada
Acute Care Hospitals · Ada, OKMercy Hospital Ardmore, Inc
Acute Care Hospitals · Ardmore, OKOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ADA, OK 74820
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 Mellisa Christy-aronson's NPI number?
The NPI number for Mellisa Christy-aronson is 1255593794. It was assigned to this individual provider in the NPPES registry on June 26, 2008.
Where is Mellisa Christy-aronson located?
Mellisa Christy-aronson practices at 430 N Monte Vista St, Ada, OK 74820. The listed phone number is (580) 235-7757.
What is Mellisa Christy-aronson's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Mellisa Christy-aronson enrolled in Medicare?
Yes. Mellisa Christy-aronson 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 Mellisa Christy-aronson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mellisa Christy-aronson reassigns Medicare benefits to 2 organizations: Great Plains Anesthesia, PLLC (Ardmore, OK) and Western Oklahoma Anesthesia Consultants PLLC (Elk City, OK). 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 Mellisa Christy-aronson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mellisa Christy-aronson accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 2 other insurers list Mellisa Christy-aronson 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 Mellisa Christy-aronson affiliated with any hospitals?
According to CMS data, Mellisa Christy-aronson is affiliated with Mercy Hospital Ada and Mercy Hospital Ardmore, Inc.
When was this NPI record last updated?
The NPPES record for Mellisa Christy-aronson was last updated on September 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.
# Dr. Mellisa Marie Christy-Aronson, M.D. · NPI 1255593794
Anesthesiology physician in Ada, Oklahoma. Individual provider, active in the CMS NPPES registry since June 26, 2008.
## Identity
- **NPI:** 1255593794 (Entity type: Individual)
- **Enumerated:** June 26, 2008
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 32473 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 430 N MONTE VISTA ST, Ada, OK 74820-4610
- **Phone:** (580) 235-7757
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Great Plains Anesthesia, PLLC (NPI 1285020362, Ardmore, OK); Western Oklahoma Anesthesia Consultants PLLC (NPI 1881102614, Elk City, OK) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2002
## Record status
- **NPPES last updated:** September 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1255593794) · Data from the CMS NPPES public registry.