Dr. Fang Tan, MD

  • Fremont, CA
  • Ophthalmologist
NPI1811997646PAC ID0941288856
Medicare services, 2024
2,242
Medicare patients, 2024
812
Part D claims, 2024
1,307
Publications
8
MIPS score, 2024
80
Practice address
1895 Mowry Ave, Fremont, CA 94538-1708
Practice phone
Call (510) 793-2800
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Fang Tan MD, Inc.

Physician office · Fremont, California

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Dr. Fang Tan is an ophthalmologist in Fremont, California

Dr. Tan practices at Fang Tan MD, Inc. in Fremont, California.

Dr. Tan's NPI, 1811997646, was assigned on July 22, 2005. Dr. Tan graduated from Shanghai Jiao Tong University School of Medicine in 1982. Dr. Tan holds California license A81026.

NPI and contact details
Medicare PAC ID
0941288856
NPI enumeration date
July 22, 2005
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(510) 793-2800
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Female
Estimated age
70
Medical school graduation
1982

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

Dr. Fang Tan practices at Fang Tan MD, Inc. in Fremont, California

Dr. Tan's primary practice is Fang Tan MD, Inc., at 1895 Mowry Ave, Fremont, CA 94538-1708. The practice phone is (510) 793-2800.

  • Fang Tan MD, Inc.
    1895 Mowry Ave, Fremont, CA 94538-1708Phone(510) 793-2800

Source: Dmand AI Affiliation Data

Dr. Fang Tan is affiliated with 1 site of care

Dr. Tan's primary practice is Fang Tan MD, Inc. in Fremont, California.

Fang Tan MD, Inc.Physician office · Fremont, CaliforniaPrimary

Source: Dmand AI Affiliation Data

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

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

EHR by site
SiteEHR vendor and product
Fang Tan MD, Inc.Available with a free account

Source: Dmand AI Technology Install Data

For health IT teams

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Dr. Fang Tan is one of 2,621 ophthalmologists in California

Ophthalmology is Dr. Tan's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Tan is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Tan is licensed in California.

Specialties and state licenses

  • Ophthalmology, CaliforniaPrimaryLicense A81026 · 2002 to 2026 · taxonomy 207W00000X

Clinical focus

Dmand AI lists age-related macular degeneration, cataract, cold sores or genital herpes, conjunctivitis, dry eye, eye infection or inflammation, eyelid inflammation and glaucoma among the conditions Dr. Tan treats.

Ophthalmologists near Dr. Tan

Counts of ophthalmologists 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. Fang Tan billed Medicare for 2,242 services in 2024

CMS data shows 2,242 Medicare services from Dr. Tan across 10 procedure codes in 2024, for 812 Medicare patients. Medicare paid $155,143 for them. Every service was in an office.

Medicare services, 20242,242
Medicare patients812
Paid by Medicare$155,143
Procedure codes10

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

  • 2023
  • 2024
Tests and treatments
2023: 1,3082024: 1,2842%
Office and hospital visits
2023: 9482024: 947No change
Imaging
2023: 02024: 11

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

  • Dr. Tan
  • California median
Medicare services
2,242vs 1,0792.1 times
Medicare patients
812vs 42193% above
Part D claims
1,250vs 6182.0 times

Medians across 2,568 ophthalmologists 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

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

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

Dr. Fang Tan treated 812 Medicare patients in 2024, average age 77

CMS counts 812 Medicare patients who saw Dr. Tan in 2024. The largest group is 65 to 74, with 347 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 83% are also on Medicaid. Their average risk score is 1.09, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Tan's median patient age at 72, with 61% women.

Medicare patients, 2024812
Average age77
Average risk score1.09
Also on Medicaid83%

Dr. Tan's Medicare patients by age, 2024

Dr. Tan's Medicare patients by sex, 2024

  • Women52865%
  • Men28435%

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

  1. High blood pressure75%
  2. High cholesterol75%
  3. Diabetes50%
  4. Arthritis35%
  5. Osteoporosis31%
  6. Ischemic heart disease30%
  7. Chronic kidney disease26%
  8. Heart failure19%

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 72

Patient panel by sex, all payers

  • Women61%
  • Men38%

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

Dr. Fang Tan wrote 1,307 Medicare Part D claims in 2024

In 2024, Dr. Tan wrote 1,307 Medicare Part D claims for 335 patients. 60% of them were for generic drugs. CMS names the drug for 1,250 of them, across 17 drugs with 11 or more claims each, at $229,004 in total drug cost. In 2023, CMS named 1,212 claims across 19 drugs.

Part D claims, 20241,307
Drugs named by CMS17
Total drug cost$229,004
Part D patients335

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

  • Generic787 claims60%
  • Brand-name520 claims40%

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: 1,2122024: 1,2503%

Drugs named by CMS: 17 in 2024, 19 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. Fang Tan scored 80 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 80 out of 100 for Dr. Tan for performance year 2024, reported individually. Dr. Tan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Tan's MIPS scores, performance year 2024

  • 80of 100Final score
  • 49.1of 100Quality
  • 40of 100Improvement Activities

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

Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)

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. Fang Tan has 8 publications on record

Dmand AI links 8 papers to Dr. Tan, published from 2010 to 2016. The most frequent topics are Cell Line, Tumor, Gene Expression Regulation, Neoplastic and Anemia, Sickle Cell. Dr. Tan's most frequent co-authors are Michael F. Marmor, MD, Wai-Kwan A. Yung, MD and Zachariah W. Chambers, MD.

Papers8
Years published2010 to 2016

Dr. Tan's papers by year, 2010 to 2016

Topics Dr. Tan writes about most

  • Cell Line, Tumor
  • Gene Expression Regulation, Neoplastic
  • Anemia, Sickle Cell
  • Breast Neoplasms
  • Electroretinography
  • Eye Proteins
  • Glioblastoma
  • Heme

Dr. Tan's most frequent co-authors

Recent publications by Dr. Tan

See all 8 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 ophthalmologists.

How network discovery works

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

Dr. Fang Tan received $872 in industry payments from 2016 to 2024

CMS Open Payments shows 21 general payments to Dr. Tan from 16 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 98% of the total. St. Jude Medical, Inc. paid the most, $287.

General payments to Dr. Tan by program year, 2016 to 2024

General payments to Dr. Tan by kind, 2016 to 2024

$872in total
  • Food and beverage$85498%
  • Education$182%

Companies that paid Dr. Tan the most, 2016 to 2024

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. Fang Tan has 1 award and honors on record

Dmand AI lists 1 award for Dr. Tan.

Awards and honors for Dr. Tan

  1. Undated
    • AAO Fellow

Source: Dmand AI Professional Profile Data

Dr. Fang Tan graduated from Shanghai Jiao Tong University School of Medicine

Dr. Tan graduated from Shanghai Jiao Tong University School of Medicine in 1982. Dr. Tan is a member of AAO.

  1. Medical schoolShanghai Jiao Tong University School of Medicine
  2. Board certified in ophthalmologyAmerican Board of Ophthalmology

Source: Dmand AI Professional Profile Data

Dr. Fang Tan accepts plans from 14 insurance carriers

Dr. Tan is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Elevance
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • Alliant Health Plans
  • +6 more carriersWith a free account

Plan types Dr. Tan accepts, by number of carriers

  1. PPO9
  2. Medicare7
  3. HMO6
  4. EPO4
  5. POS4

Source: Dmand AI Insurance Network Data

Sources for Dr. Fang 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 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
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
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. Fang 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. Fang Tan's NPI number?

Dr. Fang Tan's NPI number is 1811997646. It was assigned on July 22, 2005, and it is active in the NPI Registry.

What kind of doctor is Dr. Fang Tan?

Dr. Fang Tan is an ophthalmologist in Fremont, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).

Where does Dr. Fang Tan practice?

Dr. Tan practices at 1895 Mowry Ave, Fremont, CA 94538-1708. Dr. Tan's primary practice is Fang Tan MD, Inc. in Fremont, California.

What is Dr. Fang Tan's office phone number?

The practice phone on file for Dr. Tan is (510) 793-2800.

What is Dr. Fang Tan's medical license number?

Dr. Tan holds California license A81026.

Does Dr. Fang Tan accept Medicare?

Yes. CMS data shows Dr. Tan billed Medicare for 2,242 services in 2024, and Dr. Tan accepts Medicare assignment.

What is Dr. Fang Tan's MIPS score?

Dr. Tan's MIPS final score for performance year 2024 is 80 out of 100, reported individually.

How many Medicare patients does Dr. Fang Tan see?

CMS counts 812 Medicare patients who saw Dr. Tan in 2024, with an average age of 77.

Is Dr. Fang Tan board certified?

Yes. Dr. Tan is board certified in ophthalmology by the American Board of Ophthalmology.

What services does Dr. Fang Tan bill to Medicare?

In 2024, Dr. Tan's most billed Medicare services were eye exam or test (92250), office visit, established patient (99214) and office visit, established patient (99213).

Show 7 more questionsShow fewer questions

Where did Dr. Fang Tan go to medical school?

Dr. Tan graduated from Shanghai Jiao Tong University School of Medicine in 1982.

What drugs does Dr. Fang Tan prescribe most?

In 2024 Medicare Part D data, Dr. Tan's most prescribed drugs by claims were Azelastine HCl, Latanoprost and Brimonidine Tartrate.

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

CMS Open Payments shows $872 in general payments to Dr. Tan from 16 companies from 2016 to 2024. The largest total came from St. Jude Medical, Inc.

How long has Dr. Fang Tan been practicing?

Dr. Tan graduated from medical school in 1982, 44 years ago.

Does Dr. Fang Tan do research?

Dmand AI links 8 publications to Dr. Tan, published from 2010 to 2016.

Who does Dr. Fang Tan publish with?

Dr. Tan's most frequent co-authors are Michael F. Marmor, MD (2 shared papers), Wai-Kwan A. Yung, MD (2 shared papers) and Zachariah W. Chambers, MD (1 shared paper).

What insurance does Dr. Fang Tan accept?

Dr. Tan is in network with 14 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.

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