DR. FRITZ MESILIEN D.C, CRNA
NPI 1073914511
Nurse Anesthetist, Certified Registered in Oro Valley, AZ
About Dr. Fritz Mesilien D.c, Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. FRITZ MESILIEN D.C, CRNA (NPI 1073914511) is an individual nurse anesthetist, certified registered in Oro Valley, Arizona, licensed in Arizona (317663) and active in the NPI registry since September 2014. He is enrolled in Medicare PECOS, is affiliated with Vista Medical Center East, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Fritz Mesilien D.c, Crna is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
20Medicare enrollment records show Fritz Mesilien reassigns Medicare billing to 20 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tucson, AZ 85741
- Reassigned Medicare billing, Arizona enrollment
- 664 clinicians in this Medicare group
El Paso, TX 79911
- Reassigned Medicare billing, Texas enrollment
- 196 clinicians in this Medicare group
Greenwood Village, CO 80111
- Reassigned Medicare billing, Kansas enrollment
- 43 clinicians in this Medicare group
Wichita Falls, TX 76301
- Reassigned Medicare billing, Texas enrollment
- 75 clinicians in this Medicare group
Fort Worth, TX 76109
- Reassigned Medicare billing, Texas enrollment
- 1,612 clinicians in this Medicare group
Richardson, TX 75082
- Reassigned Medicare billing, North Carolina enrollment
- 493 clinicians in this Medicare group
West Des Moines, IA 50266
- Reassigned Medicare billing, Iowa enrollment
- 209 clinicians in this Medicare group
Maryville, IL 62062
- Reassigned Medicare billing, Illinois enrollment
- 149 clinicians in this Medicare group
Galesburg, IL 61401
- Reassigned Medicare billing, Illinois enrollment
- 142 clinicians in this Medicare group
Pensacola, FL 32502
- Reassigned Medicare billing, Texas enrollment
- 432 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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Vista Medical Center East
Acute Care Hospitals · Waukegan, ILTrinity Rock Island
Acute Care Hospitals · Rock Island, ILSentara Norfolk General Hospital
Acute Care Hospitals · Norfolk, VASentara Leigh Hospital
Acute Care Hospitals · Norfolk, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 85755 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.
ORO VALLEY, AZ 85755
ORO VALLEY, AZ 85755
ORO VALLEY, AZ 85755
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 Fritz Mesilien's NPI number?
The NPI number for Fritz Mesilien is 1073914511. It was assigned to this individual provider in the NPPES registry on September 15, 2014.
Where is Fritz Mesilien located?
Fritz Mesilien practices at 1551 E Tangerine Rd, Oro Valley, AZ 85755. The listed phone number is (520) 901-3500.
What is Fritz Mesilien's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Fritz Mesilien enrolled in Medicare?
Yes. Fritz Mesilien is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Fritz Mesilien's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Fritz Mesilien reassigns Medicare benefits to 20 organizations: Northwest Hbp Medical Services LLC (Tucson, AZ), El Paso Ams, PLLC (El Paso, TX), Us Anesthesia Partners Of Kansas PA (Greenwood Village, CO), Wichita Falls Anesthesia PLLC (Wichita Falls, TX), Emergenchealth PLLC (Fort Worth, TX) and 15 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 Fritz Mesilien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Fritz Mesilien accept?
Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Kansas, Inc., Blue Cross and Blue Shield of Texas, Oscar Health and Wellmark Health Plan of Iowa, Inc. list Fritz Mesilien 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 Fritz Mesilien affiliated with any hospitals?
According to CMS data, Fritz Mesilien is affiliated with Vista Medical Center East, Trinity Rock Island, Sentara Norfolk General Hospital and Sentara Leigh Hospital.
When was this NPI record last updated?
The NPPES record for Fritz Mesilien was last updated on January 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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. Fritz Mesilien, D.C, CRNA · NPI 1073914511
Nurse Anesthetist, Certified Registered physician in Oro Valley, Arizona. Individual provider, active in the CMS NPPES registry since September 15, 2014.
## Identity
- **NPI:** 1073914511 (Entity type: Individual)
- **Enumerated:** September 15, 2014
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 317663 (Arizona)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1551 E TANGERINE RD, Oro Valley, AZ 85755-6213
- **Phone:** (520) 901-3500
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 20 organizations under Medicare reassignment (form CMS-855R): Northwest Hbp Medical Services LLC (NPI 1407353006, Tucson, AZ); El Paso Ams, PLLC (NPI 1134740202, El Paso, TX); Us Anesthesia Partners Of Kansas PA (NPI 1811415599, Greenwood Village, CO); Wichita Falls Anesthesia PLLC (NPI 1639636210, Wichita Falls, TX); Emergenchealth PLLC (NPI 1467970897, Fort Worth, TX); and 15 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** January 23, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1073914511) · Data from the CMS NPPES public registry.