DAVID BARTOW WILLIAMS CAA
NPI 1124563556
Anesthesiologist Assistant in Santa Fe, NM
About David Bartow Williams Caa NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID BARTOW WILLIAMS CAA (NPI 1124563556) is an individual anesthesiologist assistant in Santa Fe, New Mexico, licensed in Indiana (75000009A) and active in the NPI registry since December 2016. He is affiliated with Christus St Vincent Regional Medical Center and is a graduate of University Of Colorado School Of Medicine, Denver (2016).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
David Bartow Williams Caa 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 David Williams reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Santa Fe, NM 87505
- Reassigned Medicare billing, New Mexico enrollment
- 399 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 39 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 1,781 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 5,212 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Christus St Vincent Regional Medical Center
Acute Care Hospitals · Santa Fe, NMOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SANTA FE, NM 87505
SANTA FE, NM 87505
SANTA FE, NM 87505
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 David Williams's NPI number?
The NPI number for David Williams is 1124563556. It was assigned to this individual provider in the NPPES registry on December 20, 2016. The provider is also known as Bart Williams.
Where is David Williams located?
David Williams practices at 455 Saint Michaels Dr, Santa Fe, NM 87505. The listed phone number is (505) 795-4227.
What is David Williams's specialty?
The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.
Is David Williams enrolled in Medicare?
Yes. David Williams 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 David Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Williams reassigns Medicare benefits to 4 organizations: St. Vincent Hospital (Santa Fe, NM), Wishard Anesthesia Group, LLC (Indianapolis, IN), Indiana University Health Care Associates, Inc (Indianapolis, IN) and Iu Health Medical Group, LLC (Indianapolis, IN). 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 David Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Williams accept?
Health plans from CareSource and Cigna Healthcare list David Williams 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 David Williams affiliated with any hospitals?
According to CMS data, David Williams is affiliated with Christus St Vincent Regional Medical Center.
When was this NPI record last updated?
The NPPES record for David Williams was last updated on June 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# David Bartow Williams, CAA · NPI 1124563556
Anesthesiologist Assistant physician in Santa Fe, New Mexico. Individual provider, active in the CMS NPPES registry since December 20, 2016.
## Identity
- **NPI:** 1124563556 (Entity type: Individual)
- **Enumerated:** December 20, 2016
- **Primary specialty:** Anesthesiologist Assistant · taxonomy 367H00000X
- **State license:** 75000009A (Indiana)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 455 SAINT MICHAELS DR, Santa Fe, NM 87505-7601
- **Phone:** (505) 795-4227
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): St. Vincent Hospital (NPI 1215437033, Santa Fe, NM); Wishard Anesthesia Group, LLC (NPI 1477505022, Indianapolis, IN); Indiana University Health Care Associates, Inc (NPI 1902032832, Indianapolis, IN); Iu Health Medical Group, LLC (NPI 1326893777, Indianapolis, IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Colorado School Of Medicine, Denver, class of 2016
## Record status
- **NPPES last updated:** June 1, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1124563556) · Data from the CMS NPPES public registry.