Fang Tan, MD
Ophthalmology Physician · Fremont, CA
Fang Tan, MD is an ophthalmology physician with a practice address in Fremont, California, and NPI 1811997646, issued on Jul 22, 2005. Check the license (California A81026, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Fang Tan
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A81026 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1895 Mowry Ave, Fremont, CA 94538
- Phone
- (510) 793-2800
- Enumerated
- Jul 22, 2005
- Record last updated
- Jan 7, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (510) 793-2882
- Medicaid ID
- 00A810260 CA
- Medicare enrollment
- Enrolled (PECOS I20040709000714); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 1895 Mowry Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Fang Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A81026Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average ophthalmology physician in 2024
1,307 Medicare Part D claims for 335 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.
Most prescribed
- Azelastine Hcl271 claims
- Latanoprost248 claims
- Brimonidine Tartrate100 claims
- Cyclosporine94 claims
- Erythromycin82 claims
- Timolol Maleate81 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $73.11
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Fang Tan among 2,899 ophthalmology physician records in California
Fang Tan, MD is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1982 · median 2001 among the 1,907 with a school on file
- Record last updated2008 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Fremont → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Amy Badger-Asaravala, M.D.Fremont, CA 945381831389089
- Audrey Chow, MDFremont, CA 945381386106441
- James Cohn, MDFremont, CA 945381043304173
- Taliva Martin, M.D.Fremont, CA 945381386822112
- Judy Ou, MDFremont, CA 945381568483964
- Sara PrasertsitFremont, CA 945381730321423
- James Resneck, MDFremont, CA 945381740352590
- Timothy Scott, MDFremont, CA 945381902997265
Common questions
What is Fang Tan, MD's NPI number?
Fang Tan, MD's National Provider Identifier (NPI) is 1811997646, issued on Jul 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Fang Tan, MD located?
The NPPES record lists a practice address at 1895 Mowry Ave, Fremont, CA, 94538. Phone: (510) 793-2800. Providers update this record themselves, so call before visiting.
How can I verify Fang Tan, MD's license?
NPPES lists California license number A81026, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Fang Tan, MD prescribe under Medicare Part D?
In 2024, Fang Tan, MD had 1,307 Medicare Part D claims for 335 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Fang Tan, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.