Dr. Alexander T. Phan, MD
- Part D claims, 2024
- 237
- Publications
- 28
- Hospital affiliations
- 1
- Industry payments
- $2,196
- Medical groups
- 2
- Practice address
- 400 North Pepper Avenue, Colton, CA 92324
- Practice phone
- Call (909) 580-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Alexander T. Phan is an internist in Colton, California
Dr. Phan practices at Arrowhead Regional Medical Center in Colton, California, part of San Bernardino County.
Dr. Phan's NPI, 1245816784, was assigned on March 23, 2021. Dr. Phan graduated from St. George's University School of Medicine in 2021. Dr. Phan holds California license 194984.
- NPI
- 1245816784NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9032573357
- NPI enumeration date
- March 23, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 580-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 31
- Medical school graduation
- 2021
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexander T. Phan practices at Arrowhead Regional Medical Center in Colton, California
Dr. Phan's primary practice is Arrowhead Regional Medical Center, at 400 North Pepper Avenue, Colton, CA 92324 in San Bernardino County. The practice phone is (909) 580-1000.
- Arrowhead Regional Medical Center400 North Pepper Avenue, Colton, CA 92324 · San Bernardino CountyPhone(909) 580-1000
Source: Dmand AI Affiliation Data
Dr. Alexander T. Phan is affiliated with 1 site of care and 2 medical groups
Dr. Phan's primary practice is Arrowhead Regional Medical Center in Colton, California, part of San Bernardino County. The medical group on file is Quantum Healthcare Medical Associates Inc. Dmand AI also links Dr. Phan 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. Alexander T. Phan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Phan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Arrowhead Regional Medical Center | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexander T. Phan is one of 16,751 internists in California
Internal medicine is Dr. Phan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Phan is board certified in internal medicine by the American Board of Internal Medicine. Dr. Phan is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Phan
Counts of internists 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. Alexander T. Phan's patients have a median age of 61
Across all payers, Dmand AI patient panel data puts Dr. Phan's median patient age at 61, with 39% women.
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 61
Patient panel by sex, all payers
- Women39%
- Men59%
Source: Dmand AI Patient Panel Data
Dr. Alexander T. Phan wrote 237 Medicare Part D claims in 2024
In 2024, Dr. Phan wrote 237 Medicare Part D claims for 24 patients. 86% of them were for generic drugs. CMS names the drug for 141 of them, across 9 drugs with 11 or more claims each, at $17,478 in total drug cost. In 2023, CMS named 29 claims across 2 drugs.
Dr. Phan's Part D claims by kind of drug, 2024
- Generic203 claims86%
- Brand-name and other34 claims14%
Dr. Phan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 292024: 141386%
Drugs named by CMS: 9 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Alexander T. Phan takes part in Medicare
Dr. Phan 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. Alexander T. Phan has 28 publications on record
Dmand AI links 28 papers to Dr. Phan, published from 2015 to 2024. 2023 was the busiest year, with 11. The most frequent topics are Neural Stem Cells. Dr. Phan has published most often in Cureus. Dr. Phan's most frequent co-authors are Alexander Phan, DO, Aldin Malkoc, MD and Mufadda J. Hasan, MD.
Dr. Phan's papers by year, 2015 to 2024
Topics Dr. Phan writes about most
- Neural Stem Cells
Dr. Phan's most frequent co-authors
- Alexander Phan, DO23 shared papers
- Aldin Malkoc, MD9 shared papers
- Mufadda J. Hasan, MD6 shared papers
Recent publications by Dr. Phan
See who Dr. Phan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Phan works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Alexander T. Phan received $2,196 in industry payments from 2023 to 2025
CMS Open Payments shows 21 general payments to Dr. Phan from 13 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 96% of the total. AngioDynamics, Inc. paid the most, $299.
General payments to Dr. Phan by program year, 2023 to 2025
General payments to Dr. Phan by kind, 2023 to 2025
- Food and beverage$2,10196%
- Education$954%
Companies that paid Dr. Phan the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alexander T. Phan graduated from St. George's University School of Medicine
Dr. Phan graduated from St. George's University School of Medicine in 2021. Dr. Phan is a member of AABIP, ACCP, SCCM, ACP and ATS.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Sources for Dr. Alexander 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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Alexander 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. Alexander T. Phan's NPI number?
Dr. Alexander T. Phan's NPI number is 1245816784. It was assigned on March 23, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander T. Phan?
Dr. Alexander T. Phan is an internist in Colton, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Alexander T. Phan practice?
Dr. Phan practices at 400 North Pepper Avenue, Colton, CA 92324. Dr. Phan's primary practice is Arrowhead Regional Medical Center in Colton, California, part of San Bernardino County. Dmand AI also links Dr. Phan to 1 medical group.
What is Dr. Alexander T. Phan's office phone number?
The practice phone on file for Dr. Phan is (909) 580-1000.
What is Dr. Alexander T. Phan's medical license number?
Dr. Phan holds California license 194984.
Which hospitals is Dr. Alexander T. Phan affiliated with?
Dr. Phan practices at Arrowhead Regional Medical Center in Colton, California.
What medical group is Dr. Alexander T. Phan part of?
Dr. Phan is linked to Quantum Healthcare Medical Associates Inc. Dmand AI links Dr. Phan to 1 more medical group.
Does Dr. Alexander T. Phan accept Medicare?
Yes. CMS lists Dr. Phan as accepting Medicare assignment.
Is Dr. Alexander T. Phan board certified?
Yes. Dr. Phan is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Alexander T. Phan go to medical school?
Dr. Phan graduated from St. George's University School of Medicine in 2021.
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What drugs does Dr. Alexander T. Phan prescribe most?
In 2024 Medicare Part D data, Dr. Phan's most prescribed drugs by claims were Atorvastatin Calcium, Metformin HCl and Gabapentin.
Has Dr. Alexander T. Phan received payments from drug or device companies?
CMS Open Payments shows $2,196 in general payments to Dr. Phan from 13 companies from 2023 to 2025. The largest total came from AngioDynamics, Inc.
How long has Dr. Alexander T. Phan been practicing?
Dr. Phan graduated from medical school in 2021, 5 years ago.
Does Dr. Alexander T. Phan do research?
Dmand AI links 28 publications to Dr. Phan, published from 2015 to 2024.
Who does Dr. Alexander T. Phan publish with?
Dr. Phan's most frequent co-authors are Alexander Phan, DO (23 shared papers), Aldin Malkoc, MD (9 shared papers) and Mufadda J. Hasan, MD (6 shared papers).
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