NPPES file of Aug 9, 2026

Vivian Lien, M.D.

Ophthalmology Physician · Mather, CA

Vivian Lien, M.D. is an ophthalmology physician with a practice address in Mather, California, and NPI 1144520339, issued on Oct 22, 2010. Check the license (California A119811, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1144520339
Name
Vivian Lien
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License numbers
A119811 CA
R71949 AZ
Q0305 TX
Self-reported in NPPES; status is on the state search
Practice location
10535 Hospital Way Bldg 720, Mather, CA 95655
Phone
(916) 366-5463
Enumerated
Oct 22, 2010
Record last updated
May 1, 2026
Fax
(916) 366-5463
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →

Also registered at 10535 Hospital Way Bldg 720

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

  1. Vania RashidiOphthalmology Physician1790289288
  2. Sheila SteapletonBlind Rehabilitation Specialist/Technologist1508696832
  3. Keith Yamanishi, O.D.Optometrist1043259849

Verify Vivian Lien in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A119811    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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Industry payments in 2024: $306.82

13 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. 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. Vivian Lien$306.82
  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.

Vivian Lien among 2,899 ophthalmology physician records in California

Vivian Lien, 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 fileNo · 66% of these records are
  • Record last updated2026 · 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).

6 ophthalmology physician records list a practice address in Mather

They are 6 of the 398 NPPES records with a practice address in Mather, and 2,899 ophthalmology physician records in California.

All 2,899 in California → Every provider in Mather → Ophthalmology Physician nationwide →

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Duva ApplemanMather, CA 956551063497568
  2. Mohammad Ashrafzadeh, MDMather, CA 956551326010182
  3. Thomas Johansen, MDMather, CA 956551841275567
  4. Vania RashidiMather, CA 956551790289288
  5. Tiffany Wong, M.D.Mather, CA 956551740495712
  6. Mitra Ayazifar, MDRoseville, CA 956611972520641
  7. Matthew Carnahan, MDRoseville, CA 956611093893760
  8. Richard Fentzke, MDRoseville, CA 956611417035163

Common questions

What is Vivian Lien, M.D.'s NPI number?

Vivian Lien, M.D.'s National Provider Identifier (NPI) is 1144520339, issued on Oct 22, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Vivian Lien, M.D. located?

The NPPES record lists a practice address at 10535 Hospital Way Bldg 720, Mather, CA, 95655. Phone: (916) 366-5463. Providers update this record themselves, so call before visiting.

How can I verify Vivian Lien, M.D.'s license?

NPPES lists California license number A119811, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.