Dr. Lee A. Tan, MD

  • San Francisco, CA
  • Neurosurgeon
NPI1295056802PAC ID0345536223
Medicare services, 2024
1,130
Medicare patients, 2024
314
Part D claims, 2024
103
Publications
205
Clinical trials
1
Practice address
505 Parnassus Ave, Box 0296, San Francisco, CA 94143
Practice phone
Call (415) 353-2733
Professional email
Get professional email
Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

UCSF Helen Diller Medical Center at Parnassus Heights

Hospital · San Francisco, California

See all 9 affiliations

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Dr. Lee A. Tan is a neurosurgeon in San Francisco, California

Dr. Tan practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health.

Dr. Tan's NPI, 1295056802, was assigned on June 17, 2010. Dr. Tan graduated from Indiana University School Of Medicine in 2010. Dr. Tan holds California license A149102.

NPI and contact details
Medicare PAC ID
0345536223
NPI enumeration date
June 17, 2010
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(415) 353-2733
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
42
Medical school graduation
2010

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Lee A. Tan practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California

Dr. Tan's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights, at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143 in San Francisco County. The practice phone is (415) 353-2733.

Source: Dmand AI Affiliation Data

Dr. Lee A. Tan is affiliated with 7 sites of care and 2 medical groups

Dr. Tan's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dr. Tan is also affiliated with Oroville Hospital. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. Tan to 3 more hospitals, 1 group practice or clinic, 1 home health agency and 1 medical group, each named with a free account.

See all 9 affiliations for Dr. Tan

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Lee A. Tan's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tan practices, 7 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UCSF Helen Diller Medical Center at Parnassus HeightsAvailable with a free account
+6 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Lee A. Tan is one of 846 neurosurgeons in California

Neurological surgery is Dr. Tan's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Tan is board certified in neurological surgery by the American Board of Neurological Surgery. Dmand AI has Dr. Tan's licenses on file in 3 states: California, Illinois and New York.

Specialties and state licenses

  • Neurological surgery, CaliforniaPrimaryLicense A149102 · 2017 to 2027 · taxonomy 207T00000X
  • Illinois licenseLicense 125-057747 · Since 2016
  • New York licenseLicense 283115 · 2016 to 2018

Clinical focus

Dmand AI lists back and neck pain treatment without fusion, lower back pain, neck pain and spine problems, spinal fusion and thoracic spine disorders among the conditions Dr. Tan treats.

Neurosurgeons near Dr. Tan

Counts of neurosurgeons 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. Lee A. Tan billed Medicare for 1,130 services in 2024

CMS data shows 1,130 Medicare services from Dr. Tan across 30 procedure codes in 2024, for 314 Medicare patients. Medicare paid $450,101 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,130
Medicare patients314
Paid by Medicare$450,101
Procedure codes30

Dr. Tan's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Surgery
2023: 6902024: 89830%
Office and hospital visits
2023: 322024: 232625%

Dr. Tan compared with the California median for neurosurgeons, 2024

  • Dr. Tan
  • California median
Medicare services
1,130vs 2165.2 times
Medicare patients
314vs 1542.0 times
Part D claims
79vs 263.0 times

Medians across 679 neurosurgeons in California with Dmand AI profiles that report each measure.

Dr. Tan'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.

See all procedures by Dr. Tan

Need commercial claims for Dr. Tan?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tan and other neurosurgeons in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Lee A. Tan treated 314 Medicare patients in 2024, average age 71

CMS counts 314 Medicare patients who saw Dr. Tan in 2024. The largest group is 65 to 74, with 141 patients. 75% of them have arthritis, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.42, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Tan's median patient age at 68, with 54% women.

Medicare patients, 2024314
Average age71
Average risk score1.42
Also on Medicaid29%

Dr. Tan's Medicare patients by age, 2024

Dr. Tan's Medicare patients by sex, 2024

  • Women17054%
  • Men14446%

Chronic conditions among Dr. Tan's Medicare patients, 2024

  1. Arthritis75%
  2. High cholesterol75%
  3. High blood pressure74%
  4. Mood disorders37%
  5. Anxiety32%
  6. Depression32%
  7. Diabetes29%
  8. Ischemic heart disease25%

Share of Medicare patients with each condition. A patient can have several.

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 68

Patient panel by sex, all payers

  • Women54%
  • Men44%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Lee A. Tan wrote 103 Medicare Part D claims in 2024

In 2024, Dr. Tan wrote 103 Medicare Part D claims for 46 patients. 99% of them were for generic drugs. CMS names the drug for 79 of them, across 3 drugs with 11 or more claims each, at $1,383 in total drug cost. In 2023, CMS named 96 claims across 3 drugs.

Part D claims, 2024103
Drugs named by CMS3
Total drug cost$1,383
Part D patients46

Dr. Tan's Part D claims by kind of drug, 2024

  • Generic102 claims99%
  • Brand-name and other1 claims1%

Dr. Tan'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: 962024: 7918%

Drugs named by CMS: 3 in 2024, 3 in 2023.

See all prescribing by Dr. Tan

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. Lee A. Tan scored 87 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Tan for performance year 2024, reported as part of a group. Dr. Tan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Tan as offering telehealth. CMS counts 928 procedures of spinal fusion by Dr. Tan, more than 99% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Tan's MIPS scores, performance year 2024

  • 87of 100Final score
  • 86.8of 100Quality
  • 40of 100Improvement Activities
  • 70of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. Tan ranks in Medicare procedure volume

Spinal fusion
99th percentile928 procedures
Laminectomy or laminotomy (partial removal of spine bones)
99th percentile174 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Lee A. Tan has 205 publications on record

Dmand AI links 205 papers to Dr. Tan, published from 2010 to 2025. 2015 was the busiest year, with 23. The most frequent topics are Cervical Vertebrae, Spinal Fusion and Magnetic Resonance Imaging. Dr. Tan has published most often in J Clin Neurosci. Dr. Tan's most frequent co-authors are Vincent C. Traynelis, MD, K Daniel Riew, MD and Praveen V. Mummaneni, MD.

Papers205
Years published2010 to 2025

Dr. Tan's papers by year, 2015 to 2025

Topics Dr. Tan writes about most

  • Cervical Vertebrae
  • Spinal Fusion
  • Magnetic Resonance Imaging
  • Decompression, Surgical
  • Lumbar Vertebrae
  • Neurosurgical Procedures
  • Tomography, X-Ray Computed
  • Postoperative Complications

Dr. Tan's most frequent co-authors

Recent publications by Dr. Tan

See all 205 publications and co-authors

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 neurosurgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Lee A. Tan has worked on 1 clinical trial

Dmand AI links Dr. Tan to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Spondylolisthesis and Spondylolysis.

Conditions in Dr. Tan's trials

  • Spondylolisthesis
  • Spondylolysis

Investigators on the most trials with Dr. Tan

Recent clinical trials with Dr. Tan

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Lee A. Tan received $685,320 in industry payments from 2016 to 2025

CMS Open Payments shows 651 general payments to Dr. Tan from 25 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 41% of the total. Medtronic, Inc. paid the most, $317,193.

General payments to Dr. Tan by program year, 2016 to 2025

General payments to Dr. Tan by kind, 2016 to 2025

$685.3Kin total
  • Consulting fees$283,43241%
  • Speaker and faculty fees$223,74833%
  • Travel and lodging$95,75514%
  • Royalties and licenses$56,7248%
  • Other$25,6624%

Companies that paid Dr. Tan the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Tan

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Lee A. Tan graduated from Indiana University School Of Medicine

Dr. Tan graduated from Indiana University School Of Medicine in 2010. Dr. Tan is a member of AANS, CNS and NASS.

  1. Medical schoolIndiana University School Of Medicine
  2. Board certified in neurological surgeryAmerican Board of Neurological Surgery

Source: Dmand AI Professional Profile Data

Dr. Lee A. Tan accepts plans from 7 insurance carriers

Dr. Tan is in network with 7 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Michigan
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • United Healthcare
  • CMS Medicare
  • Molina

Plan types Dr. Tan accepts, by number of carriers

  1. Medicare7
  2. PPO5
  3. HMO1
  4. POS1

Source: Dmand AI Insurance Network Data

Sources for Dr. Lee A. Tan's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Lee A. 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. Lee A. Tan's NPI number?

Dr. Lee A. Tan's NPI number is 1295056802. It was assigned on June 17, 2010, and it is active in the NPI Registry.

What kind of doctor is Dr. Lee A. Tan?

Dr. Lee A. Tan is a neurosurgeon in San Francisco, California. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).

Where does Dr. Lee A. Tan practice?

Dr. Tan practices at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143. Dr. Tan's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dmand AI also links Dr. Tan to 3 hospitals, 1 group practice or clinic, 1 home health agency and 1 medical group.

What is Dr. Lee A. Tan's office phone number?

The practice phone on file for Dr. Tan is (415) 353-2733.

What is Dr. Lee A. Tan's medical license number?

Dr. Tan holds California license A149102, one of the licenses on file in 3 states.

Which states has Dr. Lee A. Tan been licensed in?

Dmand AI has state licenses on file for Dr. Tan in California (2017 to 2027), Illinois (since 2016) and New York (2016 to 2018).

Which hospitals is Dr. Lee A. Tan affiliated with?

Dr. Tan practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California. Dr. Tan is also affiliated with Oroville Hospital. Dmand AI links Dr. Tan to 3 more hospitals.

What medical group is Dr. Lee A. Tan part of?

Dr. Tan is linked to UCSF Pediatrics. Dmand AI links Dr. Tan to 1 more medical group.

Does Dr. Lee A. Tan accept Medicare?

Yes. CMS data shows Dr. Tan billed Medicare for 1,130 services in 2024, and Dr. Tan accepts Medicare assignment.

Does Dr. Lee A. Tan offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Tan as offering telehealth services.

Show 11 more questionsShow fewer questions

What is Dr. Lee A. Tan's MIPS score?

Dr. Tan's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.

How many Medicare patients does Dr. Lee A. Tan see?

CMS counts 314 Medicare patients who saw Dr. Tan in 2024, with an average age of 71.

Is Dr. Lee A. Tan board certified?

Yes. Dr. Tan is board certified in neurological surgery by the American Board of Neurological Surgery.

What services does Dr. Lee A. Tan bill to Medicare?

In 2024, Dr. Tan's most billed Medicare services were surgery: bones and joints (22614), surgery: bones and joints (22853) and office visit, established patient (99213).

Where did Dr. Lee A. Tan go to medical school?

Dr. Tan graduated from Indiana University School Of Medicine in 2010.

What drugs does Dr. Lee A. Tan prescribe most?

In 2024 Medicare Part D data, Dr. Tan's most prescribed drugs by claims were Baclofen, Gabapentin and Naloxone HCl.

Has Dr. Lee A. Tan received payments from drug or device companies?

CMS Open Payments shows $685,320 in general payments to Dr. Tan from 25 companies from 2016 to 2025. The largest total came from Medtronic, Inc.

How long has Dr. Lee A. Tan been practicing?

Dr. Tan graduated from medical school in 2010, 16 years ago.

Does Dr. Lee A. Tan do research?

Dmand AI links 205 publications to Dr. Tan, published from 2010 to 2025. Dr. Tan has worked on 1 clinical trial.

Who does Dr. Lee A. Tan publish with?

Dr. Tan's most frequent co-authors are Vincent C. Traynelis, MD (20 shared papers), K Daniel Riew, MD (18 shared papers) and Praveen V. Mummaneni, MD (14 shared papers).

What insurance does Dr. Lee A. Tan accept?

Dr. Tan is in network with 7 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.

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