DR. SHAUN DAVID CARSTAIRS M.D.
NPI 1255301602
Emergency Medicine in Chula Vista, CA
About Dr. Shaun David Carstairs M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SHAUN DAVID CARSTAIRS M.D. (NPI 1255301602) is an individual emergency medicine provider in Chula Vista, California, licensed in California (A71434) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Morehouse General Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 2
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. Shaun David Carstairs 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
6Medicare enrollment records show Shaun Carstairs reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chula Vista, CA 91910
- Reassigned Medicare billing, California enrollment
- 44 clinicians in this Medicare group
San Diego, CA 92127
- Reassigned Medicare billing, California enrollment
- 271 clinicians in this Medicare group
Encinitas, CA 92024
- Reassigned Medicare billing, California enrollment
- 221 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 562 clinicians in this Medicare group
Sweetwater, TX 79556
- Reassigned Medicare billing, Texas enrollment
- 15 clinicians in this Medicare group
Bastrop, LA 71220
- Reassigned Medicare billing, Louisiana enrollment
- 72 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Morehouse General Hospital
Acute Care Hospitals · Bastrop, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91910 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.
CHULA VISTA, CA 91910
CHULA VISTA, CA 91910
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 Shaun Carstairs's NPI number?
The NPI number for Shaun Carstairs is 1255301602. It was assigned to this individual provider in the NPPES registry on January 26, 2006.
Where is Shaun Carstairs located?
Shaun Carstairs practices at 435 H St, Chula Vista, CA 91910. The listed phone number is (619) 691-7290.
What is Shaun Carstairs's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Shaun Carstairs enrolled in Medicare?
Yes. Shaun Carstairs 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 Shaun Carstairs's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shaun Carstairs reassigns Medicare benefits to 6 organizations: Chula Vista Emergency Room Physicians, A Medical Corporation (Chula Vista, CA), Uc San Diego Health Community Group (San Diego, CA), Regents Of The University Of California (Encinitas, CA), Rady Children's Hospital San Diego (San Diego, CA), Rolling Plains Memorial Hospital (Sweetwater, TX) and 1 more organization, 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 Shaun Carstairs's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Shaun Carstairs accept?
Health plans from Baylor Scott and White Health Plan, Blue Cross and Blue Shield of Texas and UnitedHealthcare list Shaun Carstairs 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 Shaun Carstairs affiliated with any hospitals?
According to CMS data, Shaun Carstairs is affiliated with Morehouse General Hospital.
When was this NPI record last updated?
The NPPES record for Shaun Carstairs was last updated on May 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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. Shaun David Carstairs, M.D. · NPI 1255301602
Emergency Medicine physician in Chula Vista, California. Individual provider, active in the CMS NPPES registry since January 26, 2006.
## Identity
- **NPI:** 1255301602 (Entity type: Individual)
- **Enumerated:** January 26, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A71434 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 435 H ST, Chula Vista, CA 91910-4307
- **Phone:** (619) 691-7290
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Chula Vista Emergency Room Physicians, A Medical Corporation (NPI 1780021782, Chula Vista, CA); Uc San Diego Health Community Group (NPI 1659864247, San Diego, CA); Regents Of The University Of California (NPI 1952637050, Encinitas, CA); Rady Children's Hospital San Diego (NPI 1669617197, San Diego, CA); Rolling Plains Memorial Hospital (NPI 1992517171, Sweetwater, TX); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Uniformed Services Uhs Fe Hebert School Of Med, class of 1998
## Record status
- **NPPES last updated:** May 28, 2025
- **Other identifiers:** Medicaid 00A714340 (CA); Medicaid 2687271 (LA)
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Source: [NPI Profile](https://npiprofile.com/npi/1255301602) · Data from the CMS NPPES public registry.