MR. ALEX PRESTON (MD) – Anesthesiology Physician, NPI 1700857968

MR. ALEX PRESTON (MD) is a healthcare provider. based in Bakersfield, California. specializing in ANESTHESIOLOGY. They hold the professional credentials MD. They hold a License No. A81836 (CA). The NPI Number for MR. ALEX PRESTON (MD) is 1700857968

Main info

Male
43 Years Of Experience
Accepts Medicare Assignment
Name
MR. ALEX PRESTON (MD)
NPI
1700857968
Phone
(661) 633-1500
Address
2635 G ST
Enumeration Date
27 January 2006
Last Update Date
5 November 2012

Doctor Profile

Medical School Name
OTHER
Secondary Phone
5597841110
Graduation Year
1983 (43 years ago)
PAC ID
4486746708
Group Practice PAC ID
6002975489
Professional Enrollment ID
I20070816000338
Address ID
CA932573320PO465XXAVEX400
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

6,391 ANESTHESIOLOGY in CA

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Provider Addresses for MR. ALEX PRESTON (MD)

  • 2635, G Street, Civic Center, Bakersfield, Kern County, California, 93301, United States

    BAKERSFIELD, CA 933012813

    Phone: (661) 633-1500

    Fax: (661) 633-2700

    Type: Mailing

  • Sierra View Medical Center, 465, West Putnam Avenue, Porterville, Tulare County, California, 93257, United States

    PORTERVILLE, CA 93257

    Phone: (559) 784-1110

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2007-08-16

PECOS data refreshed: 2026-06-15

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20070816000338IAnesthesiologyCATBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 93301)

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Provider's Procedures

MR. ALEX PRESTON (MD) performs procedures in ANESTHESIOLOGY. See the list of HCPCS codes below.
SpecialtyPractice State
HCPCS Code
Description
Service Count
Beneficiary Count
ANESTHESIOLOGYCA00790Anesthesia for procedure in upper abdomen including use of an endoscope1111

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 6002975489View full group profile
NameSpecialtyState
Certified Registered Nurse Anesthetist (Crna)CA
Certified Registered Nurse Anesthetist (Crna)AZ
-CA
A N E S T H E S I O L O G YCA
-CA
Certified Registered Nurse Anesthetist (Crna)CA
Certified Registered Nurse Anesthetist (Crna)CA
Certified Registered Nurse Anesthetist (Crna)CA
Certified Registered Nurse Anesthetist (Crna)CA
Certified Registered Nurse Anesthetist (Crna)CA

Reviews

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Frequently asked questions

Can I use this page to confirm MR. ALEX PRESTON (MD)'s NPI?
Yes. MR. ALEX PRESTON (MD) is listed with NPI 1700857968 in the public NPI dataset.
Does the file indicate MR. ALEX PRESTON (MD) is practicing under active NPI?
Directory data currently reports MR. ALEX PRESTON (MD) as active.
What is MR. ALEX PRESTON (MD)'s specialty?
The listing groups MR. ALEX PRESTON (MD) with Anesthesiology Physician. Clinical services aligned with this taxonomy classification.
What address line appears for MR. ALEX PRESTON (MD)?
MR. ALEX PRESTON (MD)'s geographic hint is Bakersfield, California in our summary view.
Why does MR. ALEX PRESTON (MD) have multiple addresses?
2 practice locations appear in the available data. Multiple addresses are common for hospital privileges, telehealth, or multi-site groups.

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