DR. MARK GRIEVES CRNA, DNAP
NPI 1245229640
Nurse Anesthetist, Certified Registered in West Burlington, IA
About Dr. Mark Grieves Crna, Dnap NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK GRIEVES CRNA, DNAP (NPI 1245229640) is an individual nurse anesthetist, certified registered in West Burlington, Iowa, licensed in Iowa (D140600) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Southeast Iowa Regional Medical Center, and is a graduate of Other (2015).
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. Mark Grieves Crna, Dnap 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 Reassignment
Medicare enrollment records show Mark Grieves reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fort Madison, IA 52627
- Reassigned Medicare billing, Iowa enrollment
- 24 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 6
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.
Southeast Iowa Regional Medical Center
Acute Care Hospitals · West Burlington, IAHenry County Health Center
Critical Access Hospitals · Mount Pleasant, IAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 52655 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.
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.
WEST BURLINGTON, IA 52655
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 Mark Grieves's NPI number?
The NPI number for Mark Grieves is 1245229640. It was assigned to this individual provider in the NPPES registry on October 18, 2005.
Where is Mark Grieves located?
Mark Grieves practices at 1221 S Gear Ave, West Burlington, IA 52655. The listed phone number is (319) 768-3030.
What is Mark Grieves's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Mark Grieves enrolled in Medicare?
Yes. Mark Grieves 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 organization bills Medicare for Mark Grieves's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Grieves reassigns Medicare benefits to Green Anesthesia Iowa PLLC (Fort Madison, IA). The 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 Mark Grieves's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Grieves accept?
Health plans from Wellmark Health Plan of Iowa, Inc. list Mark Grieves 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 Mark Grieves affiliated with any hospitals?
According to CMS data, Mark Grieves is affiliated with Southeast Iowa Regional Medical Center and Henry County Health Center.
When was this NPI record last updated?
The NPPES record for Mark Grieves was last updated on March 8, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Dr. Mark Grieves, CRNA, DNAP · NPI 1245229640
Nurse Anesthetist, Certified Registered physician in West Burlington, Iowa. Individual provider, active in the CMS NPPES registry since October 18, 2005.
## Identity
- **NPI:** 1245229640 (Entity type: Individual)
- **Enumerated:** October 18, 2005
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** D140600 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 1221 S GEAR AVE, West Burlington, IA 52655-1679
- **Phone:** (319) 768-3030
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** Green Anesthesia Iowa PLLC (NPI 1649143157, Fort Madison, IA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** March 8, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1245229640) · Data from the CMS NPPES public registry.