MR. ALEX PRESTON MD
NPI 1700857968
Anesthesiology in Porterville, CA
About Mr. Alex Preston Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. ALEX PRESTON MD (NPI 1700857968) is an individual anesthesiology provider in Porterville, California, licensed in California (A81836) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1983).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 6
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
Mr. Alex Preston Md 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 Reassignment
Medicare enrollment records show Alex Preston reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bakersfield, CA 93301
- Reassigned Medicare billing, California enrollment
- 124 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.
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 4
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 Alex Preston's NPI number?
The NPI number for Alex Preston is 1700857968. It was assigned to this individual provider in the NPPES registry on January 27, 2006.
Where is Alex Preston located?
Alex Preston practices at 465 W Putnam, Porterville, CA 93257. The listed phone number is (559) 784-1110.
What is Alex Preston's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Alex Preston enrolled in Medicare?
Yes. Alex Preston 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 organization bills Medicare for Alex Preston's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alex Preston reassigns Medicare benefits to Comfort Anesthesia Associates Inc (Bakersfield, CA). The 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 Alex Preston'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 Alex Preston was last updated on November 5, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Mr. Alex Preston, MD · NPI 1700857968
Anesthesiology physician in Porterville, California. Individual provider, active in the CMS NPPES registry since January 27, 2006.
## Identity
- **NPI:** 1700857968 (Entity type: Individual)
- **Enumerated:** January 27, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A81836 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 465 W PUTNAM, Porterville, CA 93257
- **Phone:** (559) 784-1110
## 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:** Comfort Anesthesia Associates Inc (NPI 1043466550, Bakersfield, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1983
## Record status
- **NPPES last updated:** November 5, 2012
- **Other identifiers:** Medicare PIN AZ537Z (CA); Other 00A818360 (CA); Medicare PIN 00A818361 (CA); and 3 more
---
Source: [NPI Profile](https://npiprofile.com/npi/1700857968) · Data from the CMS NPPES public registry.