JOHN SANFORD CROSS III M.D.
NPI 1538181755
Anesthesiology in Orange, CA
About John Sanford Cross Iii M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN SANFORD CROSS III M.D. (NPI 1538181755) is an individual anesthesiology provider in Orange, California, licensed in California (G78540) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Westchester Medical Center, and maintains a secondary practice location in Valhalla.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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 and accepts Medicare assignment
John Sanford Cross Iii 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 John Cross reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Torrance, CA 90503
- Reassigned Medicare billing, California enrollment
- 48 clinicians in this Medicare group
Valhalla, NY 10595
- Reassigned Medicare billing, New York enrollment
- 1,663 clinicians in this Medicare group
- Reassigned Medicare billing, California enrollment
- 420 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 5
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.
Westchester Medical Center
Acute Care Hospitals · Valhalla, NYOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ORANGE, CA 92868
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 John Cross's NPI number?
The NPI number for John Cross is 1538181755. It was assigned to this individual provider in the NPPES registry on July 24, 2006.
Where is John Cross located?
John Cross practices at 1100 W Stewart Dr, Orange, CA 92868. The listed phone number is (714) 633-9111.
What is John Cross's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Cross enrolled in Medicare?
Yes. John Cross 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 John Cross's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Cross reassigns Medicare benefits to 3 organizations: South Bay Anesthesia Medical Group Inc. (Torrance, CA), Westchester Medical Center Advanced Physician Services PC (Valhalla, NY) and Allied Anesthesia Medical Group Inc (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 John Cross's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is John Cross affiliated with any hospitals?
According to CMS data, John Cross is affiliated with Westchester Medical Center.
When was this NPI record last updated?
The NPPES record for John Cross was last updated on November 23, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# John Sanford Cross III, M.D. · NPI 1538181755
Anesthesiology physician in Orange, California. Individual provider, active in the CMS NPPES registry since July 24, 2006.
## Identity
- **NPI:** 1538181755 (Entity type: Individual)
- **Enumerated:** July 24, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** G78540 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1100 W STEWART DR, Orange, CA 92868-3849
- **Phone:** (714) 633-9111 · **Fax:** (714) 744-8695
## 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): South Bay Anesthesia Medical Group Inc. (NPI 1073531836, Torrance, CA); Westchester Medical Center Advanced Physician Services PC (NPI 1740687458, Valhalla, NY); Allied Anesthesia Medical Group Inc (CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Missouri, Columbia School Of Medicine, class of 1992
## Record status
- **NPPES last updated:** November 23, 2025
- **Other identifiers:** Other 00G785400 (CA); Medicaid 00G785400 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1538181755) · Data from the CMS NPPES public registry.