NPPES file of Aug 9, 2026

Xiaolin Zhang, M.D.

Ophthalmology Physician · Westlake Village, CA

Xiaolin Zhang, M.D. is an ophthalmology physician with a practice address in Westlake Village, California, and NPI 1063739928, issued on Apr 30, 2010. Check the license (California A135328, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1063739928
Name
Xiaolin Zhang
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License number
A135328 CA
Self-reported in NPPES; status is on the state search
Practice location
4353 Park Terrace Dr Ste 150, Westlake Village, CA 91361
Phone
(805) 987-5300
Enumerated
Apr 30, 2010
Record last updated
Dec 20, 2022
Fax
(818) 707-7668
Medicare enrollment
Enrolled (PECOS I20150707003461); accepts Medicare assignment
Medical or professional school
Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 2010
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 4353 Park Terrace Dr Ste 150

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Adam Abroms, MDOphthalmology Physician1497743702
  2. Alique Boulgourjian, ODOptometrist1891569356
  3. Joseph Chen, M.D.Ophthalmology Physician1639496953
  4. Lynn Huang, MD, MPHOphthalmology Physician1689808438
  5. Matthew Johnson, MDOphthalmology Physician1356967863
  6. Shalini Kapoor, M.D.Ophthalmology Physician1932206224

Verify Xiaolin Zhang in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A135328
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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18% fewer Medicare Part D claims than the average ophthalmology physician in 2024

1,248 Medicare Part D claims for 313 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 66% of claims.

  1. Xiaolin Zhang1,248
  2. Specialty average1,518

Most prescribed

  1. Miebo170 claims
  2. Tyrvaya156 claims
  3. Prednisolone Acetate125 claims
  4. Cequa80 claims
  5. Doxycycline Hyclate80 claims
  6. Moxifloxacin78 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.

The MIPS final score for 2023 (Medicare payment program): 4.8 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score0.0
  2. Costout of 100 · 30%16.0
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $1,723.29

59 payments; by number, the most common kind was food and beverage; the largest payer was Biotissue Holdings 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.

  1. Xiaolin Zhang$1,723.29
  2. Specialty average$4,535.02

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Paul J Dougherty M D IncWestlake Village, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Xiaolin Zhang among 2,899 ophthalmology physician records in California

Xiaolin Zhang, M.D. 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 2010, is newer than 74% of them.

  • NPI issued2010 · 74% of these records are older, 24% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2010 · median 2001 among the 1,907 with a school on file
  • Record last updated2022 · 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).

11 ophthalmology physician records list a practice address in Westlake Village

They are 11 of the 1,397 NPPES records with a practice address in Westlake Village, and 2,899 ophthalmology physician records in California.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Adam Abroms, MDWestlake Village, CA 913611497743702
  2. Joseph Chen, M.D.Westlake Village, CA 913611639496953
  3. Steven Corwin, MDThousand Oaks, CA 913611720089964
  4. Paul Dougherty, M.D.Westlake Village, CA 913611083744775
  5. Daniel Ebroon, M.D.Thousand Oaks, CA 913611023050655
  6. George Hoffman, MDWestlake Village, CA 913611689869356
  7. Lynn Huang, MD, MPHWestlake Village, CA 913611689808438
  8. Shalini Kapoor, M.D.Westlake Village, CA 913611932206224

Common questions

What is Xiaolin Zhang, M.D.'s NPI number?

Xiaolin Zhang, M.D.'s National Provider Identifier (NPI) is 1063739928, issued on Apr 30, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Xiaolin Zhang, M.D. located?

The NPPES record lists a practice address at 4353 Park Terrace Dr Ste 150, Westlake Village, CA, 91361. Phone: (805) 987-5300. Providers update this record themselves, so call before visiting.

How can I verify Xiaolin Zhang, M.D.'s license?

NPPES lists California license number A135328, 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 Xiaolin Zhang, M.D. prescribe under Medicare Part D?

In 2024, Xiaolin Zhang, M.D. had 1,248 Medicare Part D claims for 313 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

What is Xiaolin Zhang, M.D.'s MIPS final score?

The 2023 MIPS final score is 4.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.

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.