ANN MARIE WATSON
NPI 1245208974
Nurse Anesthetist, Certified Registered in Greenville, SC
About Ann Marie Watson NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANN MARIE WATSON (NPI 1245208974) is an individual nurse anesthetist, certified registered in Greenville, South Carolina, licensed in South Carolina (1861) and active in the NPI registry since March 2006.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ann Marie Watson is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Ann Watson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Greenville, SC 29605
- Reassigned Medicare billing, South Carolina enrollment
- 413 clinicians in this Medicare group
Greenville, SC 29615
- Reassigned Medicare billing, South Carolina enrollment
- 735 clinicians in this Medicare group
Sumter, SC 29150
- Reassigned Medicare billing, South Carolina enrollment
- 60 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 2
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.
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.
GREENVILLE, SC 29605
GREENVILLE, SC 29605
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 Ann Watson's NPI number?
The NPI number for Ann Watson is 1245208974. It was assigned to this individual provider in the NPPES registry on March 9, 2006.
Where is Ann Watson located?
Ann Watson practices at 701 Grove Rd, Greenville, SC 29605. The listed phone number is (864) 455-7000.
What is Ann Watson's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Ann Watson enrolled in Medicare?
Yes. Ann Watson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ann Watson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann Watson reassigns Medicare benefits to 3 organizations: Prisma Health-Upstate (Greenville, SC), Greenville Health System (Greenville, SC) and Under Anesthesia (Sumter, SC). 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 Ann Watson'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 Ann Watson was last updated on April 25, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Ann Marie Watson · NPI 1245208974
Nurse Anesthetist, Certified Registered physician in Greenville, South Carolina. Individual provider, active in the CMS NPPES registry since March 9, 2006.
## Identity
- **NPI:** 1245208974 (Entity type: Individual)
- **Enumerated:** March 9, 2006
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 1861 (South Carolina)
- **Sole proprietor:** No
## Practice location
- **Address:** 701 GROVE RD, Greenville, SC 29605-2757
- **Phone:** (864) 455-7000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Prisma Health-Upstate (NPI 1225583115, Greenville, SC); Greenville Health System (NPI 1568532513, Greenville, SC); Under Anesthesia (NPI 1194018242, Sumter, SC) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 25, 2014
- **Other identifiers:** Medicare PIN Q333953410 (SC); Medicaid AN1215 (SC)
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Source: [NPI Profile](https://npiprofile.com/npi/1245208974) · Data from the CMS NPPES public registry.