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Dr. Leon L. Tan, MD
NPI1699715672
- Part D claims, 2022
- 11
- Publications
- 2
- Hospital affiliations
- 1
- Industry payments
- $569
- Medical group
- 1
- Practice address
- 750s Bascom Ave, San Jose, CA 95128
- Practice phone
- Call (408) 885-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Valley Health Center San Jose (Bascom Ave)
FQHC - Main Site · San Jose, California
Find Dr. Tan'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. Leon L. Tan is a neurologist in San Jose, California
Dr. Tan practices at Valley Health Center San Jose (Bascom Ave) in San Jose, California.
Dr. Tan's NPI, 1699715672, was assigned on June 7, 2006. Dr. Tan graduated from University of Santo Tomas in 1972. Dr. Tan holds California license A33939.
NPI and contact details
- NPI
- 1699715672NPI Registry (opens in a new tab)
- NPI enumeration date
- June 7, 2006
- NPI status
- Active
- Practice phone
- (408) 885-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 80
- Medical school graduation
- 1972
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Leon L. Tan practices at Valley Health Center San Jose (Bascom Ave) in San Jose, California
Dr. Tan's primary practice is Valley Health Center San Jose (Bascom Ave), at 750s Bascom Ave, San Jose, CA 95128 in Santa Clara County. The practice phone is (408) 885-5000.
- Valley Health Center San Jose (Bascom Ave)750s Bascom Ave, San Jose, CA 95128 · Santa Clara CountyPhone(408) 885-5000
Source: Dmand AI Affiliation Data
Dr. Leon L. Tan is affiliated with 3 sites of care and 1 medical group
Dr. Tan's primary practice is Valley Health Center San Jose (Bascom Ave) in San Jose, California. Dr. Tan is also affiliated with Santa Clara Valley Medical Center. The medical group on file is County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic. Dmand AI also links Dr. Tan to 1 more urgent care center, named with a free account. Dr. Tan's employer is on file too: a community health center (fqhc).
Valley Health Center San Jose (Bascom Ave)Primary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Leon L. Tan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Valley Health Center San Jose (Bascom Ave) | 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. Leon L. Tan is one of 2,207 neurologists in California
Neurology is Dr. Tan's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dmand AI has Dr. Tan's licenses on file in 5 states: California, New Jersey, New York, Pennsylvania and Florida.
Specialties and state licenses
- Neurology, CaliforniaPrimary
- New Jersey license
- New York license
- Pennsylvania license
- Florida license
Clinical focus
Dmand AI lists epilepsy among the conditions Dr. Tan treats.
Neurologists near Dr. Tan
Counts of neurologists 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. Leon L. Tan's patients have a median age of 13
Across all payers, Dmand AI patient panel data puts Dr. Tan's median patient age at 13, with 51% women.
Dr. Tan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 13
Patient panel by sex, all payers
- Women51%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Leon L. Tan wrote 11 Medicare Part D claims in 2022
In 2022, Dr. Tan wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $635 in total drug cost. In 2017, CMS named 25 claims across 2 drugs.
Part D claims, 202211
Drugs named by CMS1
Total drug cost$635
Dr. Tan's most prescribed drugs by claims, 2022
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, 2017 to 2022
- 2017
- 2022
- Claims for drugs CMS names
- 2017: 252022: 1156%
Drugs named by CMS: 1 in 2022, 2 in 2017.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Leon L. Tan has 2 publications on record
Dmand AI links 2 papers to Dr. Tan. Dr. Tan's most frequent co-authors are James William Langston, MD and Caroline M. Tanner, MD, PhD.
Papers2
Dr. Tan's most frequent co-authors
- James William Langston, MD1 shared paper
- Caroline M. Tanner, MD, PhD1 shared paper
Recent publications by Dr. Tan
BrainExonsLewy Bodies
See who Dr. Tan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tan works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Leon L. Tan received $569 in industry payments from 2016 to 2019
CMS Open Payments shows 8 general payments to Dr. Tan from 4 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. UCB, Inc. paid the most, $344.
General payments to Dr. Tan by program year, 2016 to 2019
Companies that paid Dr. Tan the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Leon L. Tan graduated from University of Santo Tomas
Dr. Tan graduated from University of Santo Tomas in 1972.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Leon L. Tan accepts plans from 5 insurance carriers
Dr. Tan is in network with 5 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- HCSC
- United Healthcare
Plan types Dr. Tan accepts, by number of carriers
- HMO4
- PPO4
- POS3
- EPO2
- Medicare2
Source: Dmand AI Insurance Network Data
Sources for Dr. Leon L. Tan'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) |
| 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 |
| 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. Leon L. Tan
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. Leon L. Tan's NPI number?
Dr. Leon L. Tan's NPI number is 1699715672. It was assigned on June 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Leon L. Tan?
Dr. Leon L. Tan is a neurologist in San Jose, California. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Leon L. Tan practice?
Dr. Tan practices at 750s Bascom Ave, San Jose, CA 95128. Dr. Tan's primary practice is Valley Health Center San Jose (Bascom Ave) in San Jose, California. Dmand AI also links Dr. Tan to 1 urgent care center.
What is Dr. Leon L. Tan's office phone number?
The practice phone on file for Dr. Tan is (408) 885-5000.
What is Dr. Leon L. Tan's medical license number?
Dr. Tan holds California license A33939, one of the licenses on file in 5 states.
Which states has Dr. Leon L. Tan been licensed in?
Dmand AI has state licenses on file for Dr. Tan in California (1979 to 2026), New Jersey (since 1993), New York (since 1978), Pennsylvania (1974 to 1988) and Florida (1979).
Which hospitals is Dr. Leon L. Tan affiliated with?
Dr. Tan is affiliated with Santa Clara Valley Medical Center.
What medical group is Dr. Leon L. Tan part of?
Dr. Tan is linked to County of Santa Clara Behavioral Health Services, Las Plumas Behavioral Health Clinic.
Where did Dr. Leon L. Tan go to medical school?
Dr. Tan graduated from University of Santo Tomas in 1972.
What drugs does Dr. Leon L. Tan prescribe most?
In 2022 Medicare Part D data, Dr. Tan's most prescribed drugs by claims were Phenobarbital.
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Has Dr. Leon L. Tan received payments from drug or device companies?
CMS Open Payments shows $569 in general payments to Dr. Tan from 4 companies from 2016 to 2019. The largest total came from UCB, Inc.
How long has Dr. Leon L. Tan been practicing?
Dr. Tan graduated from medical school in 1972, 54 years ago.
Does Dr. Leon L. Tan do research?
Dmand AI links 2 publications to Dr. Tan.
Who does Dr. Leon L. Tan publish with?
Dr. Tan's most frequent co-authors are James William Langston, MD (1 shared paper) and Caroline M. Tanner, MD, PhD (1 shared paper).
What insurance does Dr. Leon L. Tan accept?
Dr. Tan is in network with 5 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.
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