Dr. Brian Chan, MD
- Medicare services, 2023
- 18
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 4,619
- Publications
- 97
- Clinical trials
- 1
- Practice address
- 380 West MacArthur Boulevard, Oakland, CA 94609
- Practice phone
- Call (510) 251-0121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Addiction Medicine & Recovery Services at Oakland Medical Center
Outpatient Addiction Treatment · Oakland, California
Find Dr. Chan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Brian Chan is an internist in Oakland, California
Dr. Chan practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California.
Dr. Chan's NPI, 1437234754, was assigned on October 26, 2006. Dr. Chan graduated from SUNY Downstate Health Sciences University in 1996. Dr. Chan holds California license A64472.
- NPI
- 1437234754NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244412070
- NPI enumeration date
- October 26, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (510) 251-0121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Brian Chan practices at Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California
Dr. Chan's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center, at 380 West MacArthur Boulevard, Oakland, CA 94609. The practice phone is (510) 251-0121.
- Addiction Medicine & Recovery Services at Oakland Medical Center380 West MacArthur Boulevard, Oakland, CA 94609Phone(510) 251-0121
Source: Dmand AI Affiliation Data
Dr. Brian Chan is affiliated with 3 sites of care and 1 medical group
Dr. Chan's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California. Dr. Chan is also affiliated with Oakland Medical Center. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Chan to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Brian Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Addiction Medicine & Recovery Services at Oakland Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Brian Chan is one of 16,751 internists in California
Internal medicine is Dr. Chan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chan is board certified in internal medicine by the American Board of Internal Medicine. Dr. Chan is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists adjustment disease, alzheimer's disease, chronic anemia, chronic diabetes, contact dermatitis, lower back pain and shingles among the conditions Dr. Chan treats.
Internists near Dr. Chan
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. Brian Chan billed Medicare for 18 services in 2023
CMS data shows 18 Medicare services from Dr. Chan across 1 procedure code in 2023, all of them office visits, for 14 Medicare patients. Medicare paid $706 for them. Every service was in an office.
Dr. Chan compared with the California median for internists, 2023
- Dr. Chan
- California median
- Medicare services
- 18vs 36195% below
- Medicare patients
- 14vs 15191% below
- Part D claims
- 4,107vs 4219.8 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Chan's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chan and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Brian Chan treated 14 Medicare patients in 2024, average age 71
CMS counts 14 Medicare patients who saw Dr. Chan in 2024. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chan's median patient age at 62, with 48% women.
Dr. Chan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Brian Chan wrote 4,619 Medicare Part D claims in 2024
In 2024, Dr. Chan wrote 4,619 Medicare Part D claims for 555 patients. 92% of them were for generic drugs. CMS names the drug for 4,107 of them, across 82 drugs with 11 or more claims each, at $107,440 in total drug cost. In 2023, CMS named 3,864 claims across 80 drugs.
Dr. Chan's Part D claims by kind of drug, 2024
- Generic4,264 claims92%
- Brand-name321 claims7%
- Other34 claims1%
Dr. Chan'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.
Drug classes CMS tracks in Dr. Chan's Part D claims, 2024
- Opioids2%99 of 4,619 claims
- Antibiotics3%143 of 4,619 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,8642024: 4,1076%
Drugs named by CMS: 82 in 2024, 80 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
Dr. Brian Chan offers telehealth to Medicare patients
Dr. Chan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Brian Chan has 97 publications on record
Dmand AI links 97 papers to Dr. Chan, published from 2005 to 2025. 2019 was the busiest year, with 8. The most frequent topics are Opioid-Related Disorders, Mice, Inbred C57BL and Malaria. Dr. Chan has published most often in J Gen Intern Med. Dr. Chan's most frequent co-authors are Philip Todd Korthuis, MD, Devan Lalit Kansagara, MD and John David Heintzman, MD.
Dr. Chan's papers by year, 2016 to 2025
Topics Dr. Chan writes about most
- Opioid-Related Disorders
- Mice, Inbred C57BL
- Malaria
- Plasmodium chabaudi
- HIV Infections
- Analgesics, Opioid
- Buprenorphine
- Host-Parasite Interactions
Dr. Chan's most frequent co-authors
- Philip Todd Korthuis, MD13 shared papers
- Devan Lalit Kansagara, MD8 shared papers
- John David Heintzman, MD7 shared papers
Recent publications by Dr. Chan
J Am Board Fam Med
J Subst Use Addict Treat
See who Dr. Chan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chan 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. Brian Chan has worked on 1 clinical trial
Dmand AI links Dr. Chan to 1 clinical trial.
Recent clinical trials with Dr. Chan
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Brian Chan received $332 in industry payments from 2019 to 2025
CMS Open Payments shows 8 general payments to Dr. Chan from 6 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Medtronic Vascular, Inc. paid the most, $121.
General payments to Dr. Chan by program year, 2019 to 2025
Companies that paid Dr. Chan the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Brian Chan has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chan, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Chan
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Brian Chan graduated from SUNY Downstate Health Sciences University
Dr. Chan graduated from SUNY Downstate Health Sciences University in 1996.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Brian Chan accepts plans from 2 insurance carriers
Dr. Chan is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Chan accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Brian Chan'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) |
| 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 |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Brian Chan
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. Brian Chan's NPI number?
Dr. Brian Chan's NPI number is 1437234754. It was assigned on October 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Brian Chan?
Dr. Brian Chan is an internist in Oakland, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Brian Chan practice?
Dr. Chan practices at 380 West MacArthur Boulevard, Oakland, CA 94609. Dr. Chan's primary practice is Addiction Medicine & Recovery Services at Oakland Medical Center in Oakland, California. Dmand AI also links Dr. Chan to 1 group practice or clinic.
What is Dr. Brian Chan's office phone number?
The practice phone on file for Dr. Chan is (510) 251-0121.
What is Dr. Brian Chan's medical license number?
Dr. Chan holds California license A64472.
Which hospitals is Dr. Brian Chan affiliated with?
Dr. Chan is affiliated with Oakland Medical Center.
What medical group is Dr. Brian Chan part of?
Dr. Chan is linked to The Permanente Medical Group, Inc.
Does Dr. Brian Chan accept Medicare?
Yes. CMS data shows Dr. Chan billed Medicare for 18 services in 2023, and Dr. Chan accepts Medicare assignment.
Does Dr. Brian Chan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chan as offering telehealth services.
How many Medicare patients does Dr. Brian Chan see?
CMS counts 14 Medicare patients who saw Dr. Chan in 2024, with an average age of 71.
Show 9 more questionsShow fewer questions
Is Dr. Brian Chan board certified?
Yes. Dr. Chan is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Brian Chan bill to Medicare?
In 2023, Dr. Chan's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Brian Chan go to medical school?
Dr. Chan graduated from SUNY Downstate Health Sciences University in 1996.
What drugs does Dr. Brian Chan prescribe most?
In 2024 Medicare Part D data, Dr. Chan's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril-Hydrochlorothiazide.
Has Dr. Brian Chan received payments from drug or device companies?
CMS Open Payments shows $332 in general payments to Dr. Chan from 6 companies from 2019 to 2025. The largest total came from Medtronic Vascular, Inc.
How long has Dr. Brian Chan been practicing?
Dr. Chan graduated from medical school in 1996, 30 years ago.
Does Dr. Brian Chan do research?
Dmand AI links 97 publications to Dr. Chan, published from 2005 to 2025. Dr. Chan has worked on 1 clinical trial.
Who does Dr. Brian Chan publish with?
Dr. Chan's most frequent co-authors are Philip Todd Korthuis, MD (13 shared papers), Devan Lalit Kansagara, MD (8 shared papers) and John David Heintzman, MD (7 shared papers).
What insurance does Dr. Brian Chan accept?
Dr. Chan is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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