SIERRA M BOURNE M.D.
NPI 1659682532
Emergency Medicine in Bishop, CA
About Sierra M Bourne M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIERRA M BOURNE M.D. (NPI 1659682532) is an individual emergency medicine provider in Bishop, California, licensed in Arizona (R72184) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
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
Sierra M Bourne 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
3Medicare enrollment records show Sierra Bourne reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bishop, CA 93514
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1922198712 (California)
- 131 clinicians in this Medicare group
Mammoth Lakes, CA 93546
- Reassigned Medicare billing, California enrollment
- 83 clinicians in this Medicare group
Bakersfield, CA 93301
- Reassigned Medicare billing, California enrollment
- 200 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 93514 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.
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 Sierra Bourne's NPI number?
The NPI number for Sierra Bourne is 1659682532. It was assigned to this individual provider in the NPPES registry on June 25, 2010.
Where is Sierra Bourne located?
Sierra Bourne practices at 150 Pioneer Ln, Bishop, CA 93514. The listed phone number is (760) 873-5811.
What is Sierra Bourne's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Sierra Bourne enrolled in Medicare?
Yes. Sierra Bourne 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 Sierra Bourne's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sierra Bourne reassigns Medicare benefits to 3 organizations: Northern Inyo Healthcare District (Bishop, CA), Southern Mono Health Care District (Mammoth Lakes, CA) and Pinnacle Emergency Physicians Of Bakersfield, A Professional Corp (Bakersfield, CA). 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 Sierra Bourne'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 Sierra Bourne was last updated on December 20, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Sierra M Bourne, M.D. · NPI 1659682532
Emergency Medicine physician in Bishop, California. Individual provider, active in the CMS NPPES registry since June 25, 2010.
## Identity
- **NPI:** 1659682532 (Entity type: Individual)
- **Enumerated:** June 25, 2010
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** R72184 (Arizona)
- **Sole proprietor:** No
## Practice location
- **Address:** 150 PIONEER LN, Bishop, CA 93514-2556
- **Phone:** (760) 873-5811
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Northern Inyo Healthcare District (NPI 1669798815, Bishop, CA); Southern Mono Health Care District (NPI 1962444059, Mammoth Lakes, CA); Pinnacle Emergency Physicians Of Bakersfield, A Professional Corp (NPI 1619153251, Bakersfield, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** December 20, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1659682532) · Data from the CMS NPPES public registry.