Dr. Alex Preston, MD
- Medicare services, 2022
- 15
- Medicare patients, 2024
- 58
- Hospital affiliations
- 2
- Industry payments
- $12
- Medical groups
- 2
- Practice address
- 1401 Garces Highway, Delano, CA 93215
- Practice phone
- Call (661) 725-4800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Preston's professional email, personal email and mobile number
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Dr. Alex Preston is an anesthesiologist in Delano, California
Dr. Preston practices at Adventist Health Delano in Delano, California, part of Adventist Health.
Dr. Preston's NPI, 1700857968, was assigned on January 27, 2006. Dr. Preston graduated from Chelyabinsk State Medical Academy in 1983. Dr. Preston holds California license A81836.
- NPI
- 1700857968NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486746708
- NPI enumeration date
- January 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (661) 725-4800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alex Preston practices at Adventist Health Delano in Delano, California
Dr. Preston's primary practice is Adventist Health Delano, at 1401 Garces Highway, Delano, CA 93215 in Kern County. The practice phone is (661) 725-4800.
- Adventist Health Delano1401 Garces Highway, Delano, CA 93215 · Kern CountyPhone(661) 725-4800
Source: Dmand AI Affiliation Data
Dr. Alex Preston is affiliated with 2 sites of care and 2 medical groups
Dr. Preston's primary practice is Adventist Health Delano in Delano, California, part of Adventist Health. Dr. Preston is also affiliated with Sierra View Medical Center. The medical group on file is Comfort Anesthesia Associates. Dmand AI also links Dr. Preston to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alex Preston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Preston practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventist Health Delano | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Adventist Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Alex Preston is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Preston's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Preston is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Preston's licenses on file in 2 states: California and Indiana.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- Indiana license
Anesthesiologists near Dr. Preston
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Alex Preston billed Medicare for 15 services in 2022
CMS data shows 15 Medicare services from Dr. Preston across 1 procedure code in 2022, for 58 Medicare patients. Medicare paid $471 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Preston's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Surgery
- 2021: 402022: 1563%
- Anesthesia
- 2021: 122022: 0100%
Dr. Preston compared with the California median for anesthesiologists, 2022
- Dr. Preston
- California median
- Medicare services
- 15vs 7279% below
- Medicare patients
- 58vs 14359% below
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Preston's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Preston?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Preston and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alex Preston treated 58 Medicare patients in 2024, average age 68
CMS counts 58 Medicare patients who saw Dr. Preston in 2024. The largest group is 65 to 74, with 22 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.93, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Preston's median patient age at 46, with 64% women.
Dr. Preston's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Preston's Medicare patients by sex, 2024
- Women3866%
- Men2034%
Chronic conditions among Dr. Preston's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes62%
- Arthritis53%
- Anxiety31%
- Mood disorders31%
- Ischemic heart disease29%
- Chronic kidney disease28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Preston's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 46
Patient panel by sex, all payers
- Women64%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Alex Preston takes part in Medicare
Dr. Preston accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Alex Preston received $12 in industry payments in 2021
CMS Open Payments shows 1 general payment to Dr. Preston from 1 drug or device company in 2021. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $12.
Companies that paid Dr. Preston the most, 2021 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alex Preston graduated from Chelyabinsk State Medical Academy
Dr. Preston graduated from Chelyabinsk State Medical Academy in 1983.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. Alex Preston accepts plans from 1 insurance carrier
Dr. Preston is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. Alex Preston's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Alex Preston
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Alex Preston's NPI number?
Dr. Alex Preston's NPI number is 1700857968. It was assigned on January 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Alex Preston?
Dr. Alex Preston is an anesthesiologist in Delano, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Alex Preston practice?
Dr. Preston practices at 1401 Garces Highway, Delano, CA 93215. Dr. Preston's primary practice is Adventist Health Delano in Delano, California, part of Adventist Health. Dmand AI also links Dr. Preston to 1 medical group.
What is Dr. Alex Preston's office phone number?
The practice phone on file for Dr. Preston is (661) 725-4800.
What is Dr. Alex Preston's medical license number?
Dr. Preston holds California license A81836, one of the licenses on file in 2 states.
Which states has Dr. Alex Preston been licensed in?
Dmand AI has state licenses on file for Dr. Preston in California (2003 to 2027) and Indiana (2001 to 2025).
Which hospitals is Dr. Alex Preston affiliated with?
Dr. Preston practices at Adventist Health Delano in Delano, California. Dr. Preston is also affiliated with Sierra View Medical Center.
What medical group is Dr. Alex Preston part of?
Dr. Preston is linked to Comfort Anesthesia Associates. Dmand AI links Dr. Preston to 1 more medical group.
Does Dr. Alex Preston accept Medicare?
Yes. CMS data shows Dr. Preston billed Medicare for 15 services in 2022, and Dr. Preston accepts Medicare assignment.
How many Medicare patients does Dr. Alex Preston see?
CMS counts 58 Medicare patients who saw Dr. Preston in 2024, with an average age of 68.
Show 6 more questionsShow fewer questions
Is Dr. Alex Preston board certified?
Yes. Dr. Preston is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. Alex Preston bill to Medicare?
In 2022, Dr. Preston's most billed Medicare services were surgery: brain, spine and nerves (64450).
Where did Dr. Alex Preston go to medical school?
Dr. Preston graduated from Chelyabinsk State Medical Academy in 1983.
Has Dr. Alex Preston received payments from drug or device companies?
CMS Open Payments shows $12 in general payments to Dr. Preston from 1 company from 2021 to 2021. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Alex Preston been practicing?
Dr. Preston graduated from medical school in 1983, 43 years ago.
What insurance does Dr. Alex Preston accept?
Dr. Preston is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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