Dr. Wei Fan, MD
- Medicare services, 2019
- 49
- Medicare patients, 2024
- 12
- Part D claims, 2019
- 60
- Hospital affiliations
- 2
- Industry payments
- $2,785
- Practice address
- 250 Hospital Parkway, San Jose, CA 95119
- Practice phone
- Call (408) 972-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Fan's professional email, personal email and mobile number
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Dr. Wei Fan is an internist in San Jose, California
Dr. Fan practices at San Jose Medical Center in San Jose, California, part of Kaiser Permanente.
Dr. Fan's NPI, 1942628987, was assigned on April 6, 2014. Dr. Fan graduated from Georgetown University School Of Medicine in 2014. Dr. Fan holds California license 147168.
- NPI
- 1942628987NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466718580
- NPI enumeration date
- April 6, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (408) 972-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Wei Fan practices at San Jose Medical Center in San Jose, California
Dr. Fan's primary practice is San Jose Medical Center, at 250 Hospital Parkway, San Jose, CA 95119 in Santa Clara County. The practice phone is (408) 972-7000.
- San Jose Medical Center250 Hospital Parkway, San Jose, CA 95119 · Santa Clara CountyPhone(408) 972-7000
Source: Dmand AI Affiliation Data
Dr. Wei Fan is affiliated with 2 sites of care and 1 medical group
Dr. Fan's primary practice is San Jose Medical Center in San Jose, California, part of Kaiser Permanente. Dr. Fan is also affiliated with Kaiser Permanente South Sacramento Medical Center. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Wei Fan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Jose Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Wei Fan is one of 16,751 internists in California
Internal medicine is Dr. Fan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Fan is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Fan's licenses on file in 3 states: California, District of Columbia and Virginia.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- District of Columbia license
- Virginia license
Internists near Dr. Fan
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. Wei Fan billed Medicare for 49 services in 2019
CMS data shows 49 Medicare services from Dr. Fan across 2 procedure codes in 2019, for 12 Medicare patients. Medicare paid $2,909 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Fan's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 1002019: 4951%
Dr. Fan compared with the California median for internists, 2019
- Dr. Fan
- California median
- Medicare services
- 49vs 36186% below
- Medicare patients
- 12vs 15192% below
- Part D claims
- 60vs 42186% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Fan's most billed Medicare procedure codes, 2019
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. Fan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fan and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Wei Fan treated 12 Medicare patients in 2024, average age 71
CMS counts 12 Medicare patients who saw Dr. Fan in 2024. Their average risk score is 3.08, 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. Fan's median patient age at 59, with 52% women.
Dr. Fan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Wei Fan wrote 60 Medicare Part D claims in 2019
In 2019, Dr. Fan wrote 60 Medicare Part D claims. Every claim was for a generic drug. They cover 4 drugs, with $852 in total drug cost. In 2018, CMS named 92 claims across 6 drugs.
Dr. Fan's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 922019: 6035%
Drugs named by CMS: 4 in 2019, 6 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Wei Fan takes part in Medicare
Dr. Fan 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. Wei Fan received $2,785 in industry payments from 2016 to 2025
CMS Open Payments shows 101 general payments to Dr. Fan from 10 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Gilead Sciences, Inc. paid the most, $1,673.
General payments to Dr. Fan by program year, 2016 to 2025
General payments to Dr. Fan by kind, 2016 to 2025
- Food and beverage$2,75399%
- Education$321%
Companies that paid Dr. Fan 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. Wei Fan graduated from Georgetown University School Of Medicine
Dr. Fan graduated from Georgetown University School Of Medicine in 2014.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Wei Fan accepts plans from 2 insurance carriers
Dr. Fan 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. Fan accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Wei Fan'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) |
| 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. Wei Fan
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. Wei Fan's NPI number?
Dr. Wei Fan's NPI number is 1942628987. It was assigned on April 6, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Wei Fan?
Dr. Wei Fan is an internist in San Jose, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Wei Fan practice?
Dr. Fan practices at 250 Hospital Parkway, San Jose, CA 95119. Dr. Fan's primary practice is San Jose Medical Center in San Jose, California, part of Kaiser Permanente.
What is Dr. Wei Fan's office phone number?
The practice phone on file for Dr. Fan is (408) 972-7000.
What is Dr. Wei Fan's medical license number?
Dr. Fan holds California license 147168, one of the licenses on file in 3 states.
Which states has Dr. Wei Fan been licensed in?
Dmand AI has state licenses on file for Dr. Fan in California (2017 to 2026), District of Columbia (2014 to 2017) and Virginia (2014 to 2017).
Which hospitals is Dr. Wei Fan affiliated with?
Dr. Fan practices at San Jose Medical Center in San Jose, California. Dr. Fan is also affiliated with Kaiser Permanente South Sacramento Medical Center.
What medical group is Dr. Wei Fan part of?
Dr. Fan is linked to The Permanente Medical Group, Inc.
Does Dr. Wei Fan accept Medicare?
Yes. CMS data shows Dr. Fan billed Medicare for 49 services in 2019, and Dr. Fan accepts Medicare assignment.
How many Medicare patients does Dr. Wei Fan see?
CMS counts 12 Medicare patients who saw Dr. Fan in 2024, with an average age of 71.
Show 7 more questionsShow fewer questions
Is Dr. Wei Fan board certified?
Yes. Dr. Fan is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Wei Fan bill to Medicare?
In 2019, Dr. Fan's most billed Medicare services were hospital inpatient care (99232) and hospital inpatient care (99238).
Where did Dr. Wei Fan go to medical school?
Dr. Fan graduated from Georgetown University School Of Medicine in 2014.
What drugs does Dr. Wei Fan prescribe most?
In 2019 Medicare Part D data, Dr. Fan's most prescribed drugs by claims were Cefpodoxime Proxetil, Furosemide and Metoprolol Tartrate.
Has Dr. Wei Fan received payments from drug or device companies?
CMS Open Payments shows $2,785 in general payments to Dr. Fan from 10 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. Wei Fan been practicing?
Dr. Fan graduated from medical school in 2014, 12 years ago.
What insurance does Dr. Wei Fan accept?
Dr. Fan 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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