Dr. An T. Phan, MD
- Medicare services, 2024
- 110
- Medicare patients, 2024
- 171
- Hospital affiliations
- 1
- Industry payments
- $159
- Medical groups
- 3
- Practice address
- 911 Sunset Drive, Hollister, CA 95032
- Practice phone
- Call (831) 637-5711
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Phan's professional email, personal email and mobile number
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Dr. An T. Phan is an anesthesiologist in Hollister, California
Dr. Phan practices at Hazel Hawkins Memorial Hospital in Hollister, California, part of Hazel Hawkins.
Dr. Phan's NPI, 1336465293, was assigned on April 15, 2010. Dr. Phan graduated from SUNY Downstate Health Sciences University in 2010. Dr. Phan holds California license A132573.
- NPI
- 1336465293NPI Registry (opens in a new tab)
- NPI enumeration date
- April 15, 2010
- NPI status
- Active
- Practice phone
- (831) 637-5711
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. An T. Phan practices at Hazel Hawkins Memorial Hospital in Hollister, California
Dr. Phan's primary practice is Hazel Hawkins Memorial Hospital, at 911 Sunset Drive, Hollister, CA 95032 in Santa Clara County. The practice phone is (831) 637-5711.
- Hazel Hawkins Memorial Hospital911 Sunset Drive, Hollister, CA 95032 · Santa Clara CountyPhone(831) 637-5711
Source: Dmand AI Affiliation Data
Dr. An T. Phan is affiliated with 3 sites of care and 3 medical groups
Dr. Phan's primary practice is Hazel Hawkins Memorial Hospital in Hollister, California, part of Hazel Hawkins. The medical group on file is County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic. Dmand AI also links Dr. Phan to 2 more medical groups, 1 group practice or clinic and 1 ambulatory surgery center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. An T. Phan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Phan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hazel Hawkins Memorial Hospital | Available with a free account |
| +2 more sites and 2 medical groups | 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 Hazel Hawkins and 6.2K+ hospitals, with verified contacts in the same login.
Dr. An T. Phan is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Phan's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Phan is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Phan's licenses on file in 2 states: California and Texas.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- Texas license
Anesthesiologists near Dr. Phan
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. An T. Phan billed Medicare for 110 services in 2024
CMS data shows 110 Medicare services from Dr. Phan across 3 procedure codes in 2024, for 171 Medicare patients. Medicare paid $12,032 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Phan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 1062024: 1104%
Dr. Phan compared with the California median for anesthesiologists, 2024
- Dr. Phan
- California median
- Medicare services
- 110vs 7253% above
- Medicare patients
- 171vs 14320% above
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Phan's most billed Medicare procedure codes, 2024
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. Phan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Phan and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. An T. Phan treated 171 Medicare patients in 2024, average age 72
CMS counts 171 Medicare patients who saw Dr. Phan in 2024. The largest group is 65 to 74, with 97 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Phan's median patient age at 44, with 57% women.
Dr. Phan's Medicare patients by age, 2024
Dr. Phan's Medicare patients by sex, 2024
- Women9656%
- Men7544%
Chronic conditions among Dr. Phan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes44%
- Ischemic heart disease22%
- Mood disorders21%
- Depression20%
- Anxiety19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Phan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 44
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
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Dr. An T. Phan received $159 in industry payments from 2016 to 2025
CMS Open Payments shows 3 general payments to Dr. Phan from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Mallinckrodt LLC paid the most, $106.
General payments to Dr. Phan by program year, 2016 to 2025
Companies that paid Dr. Phan the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. An T. Phan graduated from SUNY Downstate Health Sciences University
Dr. Phan graduated from SUNY Downstate Health Sciences University in 2010.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. An T. Phan accepts plans from 1 insurance carrier
Dr. Phan 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. An T. Phan'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) |
| 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. An T. Phan
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. An T. Phan's NPI number?
Dr. An T. Phan's NPI number is 1336465293. It was assigned on April 15, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. An T. Phan?
Dr. An T. Phan is an anesthesiologist in Hollister, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. An T. Phan practice?
Dr. Phan practices at 911 Sunset Drive, Hollister, CA 95032. Dr. Phan's primary practice is Hazel Hawkins Memorial Hospital in Hollister, California, part of Hazel Hawkins. Dmand AI also links Dr. Phan to 2 medical groups, 1 group practice or clinic and 1 ambulatory surgery center.
What is Dr. An T. Phan's office phone number?
The practice phone on file for Dr. Phan is (831) 637-5711.
What is Dr. An T. Phan's medical license number?
Dr. Phan holds California license A132573, one of the licenses on file in 2 states.
Which states has Dr. An T. Phan been licensed in?
Dmand AI has state licenses on file for Dr. Phan in California (2014 to 2026) and Texas (2013 to 2020).
Which hospitals is Dr. An T. Phan affiliated with?
Dr. Phan practices at Hazel Hawkins Memorial Hospital in Hollister, California.
What medical group is Dr. An T. Phan part of?
Dr. Phan is linked to County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic. Dmand AI links Dr. Phan to 2 more medical groups.
Does Dr. An T. Phan accept Medicare?
Yes. CMS data shows Dr. Phan billed Medicare for 110 services in 2024.
How many Medicare patients does Dr. An T. Phan see?
CMS counts 171 Medicare patients who saw Dr. Phan in 2024, with an average age of 72.
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Is Dr. An T. Phan board certified?
Yes. Dr. Phan is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. An T. Phan bill to Medicare?
In 2024, Dr. Phan's most billed Medicare services were anesthesia (00811), anesthesia (00812) and anesthesia (00731).
Where did Dr. An T. Phan go to medical school?
Dr. Phan graduated from SUNY Downstate Health Sciences University in 2010.
Has Dr. An T. Phan received payments from drug or device companies?
CMS Open Payments shows $159 in general payments to Dr. Phan from 3 companies from 2016 to 2025. The largest total came from Mallinckrodt LLC.
How long has Dr. An T. Phan been practicing?
Dr. Phan graduated from medical school in 2010, 16 years ago.
What insurance does Dr. An T. Phan accept?
Dr. Phan 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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