Barry Y.p. Fung, M.D.
Ophthalmology Physician · Los Altos, CA
Barry Y.p. Fung, M.D. is an ophthalmology physician with a practice address in Los Altos, California, and NPI 1225079205, issued on Jun 9, 2006. Check the license (California A70770, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Barry Y.p. Fung
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A70770 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4906 EL Camino Real, Los Altos, CA 94022
- Phone
- (650) 967-7834
- Enumerated
- Jun 9, 2006
- Record last updated
- Nov 10, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- 7180235 CA
- Medicare enrollment
- Enrolled (PECOS I20081219000195); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 4906 EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Barry Y.p. Fung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A70770Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average ophthalmology physician in 2024
4,282 Medicare Part D claims for 816 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of claims.
Most prescribed
- Latanoprost794 claims
- Restasis410 claims
- Brimonidine Tartrate323 claims
- Timolol Maleate314 claims
- Erythromycin252 claims
- Prednisolone Acetate223 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $19.08
1 payment: food and beverage; the largest payer was Oyster Point Pharma, 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.
7 ophthalmology physician records list a practice address in Los Altos
They are 7 of the 718 NPPES records with a practice address in Los Altos, and 2,899 ophthalmology physician records in California.
All 7 in Los Altos → All 2,899 in California → Every provider in Los Altos →
Other ophthalmology physician records in California
- Sam Abbassi, MD, MSWest Hills, CA1881937720
- Richard Abbott, M.D.San Francisco, CA1346276573
- Jean-Paul Abboud, M.D., PH.D.Del Mar, CA1760776728
- Nizar Abdelfattah, MDPasadena, CA1801359393
- Parastou Abedi, MDAliso Viejo, CA1720067333
- Shahla Abedi, MDAliso Viejo, CA1467431072
- Lilit Ablabutyan, M.D.Glendale, CA1497013064
- Nathan Abraham, M.D.Valencia, CA1306224456
- James Abrams, M.D.San Bruno, CA1912903329
- Adam Abroms, MDWestlake Village, CA1497743702
Common questions
What is Barry Y.p. Fung, M.D.'s NPI number?
Barry Y.p. Fung, M.D.'s National Provider Identifier (NPI) is 1225079205, issued on Jun 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Barry Y.p. Fung, M.D. located?
The NPPES record lists a practice address at 4906 EL Camino Real, Los Altos, CA, 94022. Phone: (650) 967-7834. Providers update this record themselves, so call before visiting.
How can I verify Barry Y.p. Fung, M.D.'s license?
NPPES lists California license number A70770, 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 Barry Y.p. Fung, M.D. prescribe under Medicare Part D?
In 2024, Barry Y.p. Fung, M.D. had 4,282 Medicare Part D claims for 816 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Barry Y.p. Fung, M.D.'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.