NPPES file of Aug 9, 2026

Thomas B. Lin, M.D.

Diagnostic Radiology Physician · Rancho Cucamonga, CA

Thomas B. Lin, M.D. is a diagnostic radiology physician with a practice address in Rancho Cucamonga, California, and NPI 1861698151, issued on Jun 23, 2007. Check the license (California A99016, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1861698151
Name
Thomas B. Lin
Credential
M.D.
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
A99016 CA
Self-reported in NPPES; status is on the state search
Practice location
8599 Haven Ave., Rancho Cucamonga, CA 91730
Phone
(909) 620-8180
Enumerated
Jun 23, 2007
Record last updated
Mar 27, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(909) 919-7288
Medicare enrollment
Enrolled (PECOS I20091215000541); accepts Medicare assignment
Medical or professional school
Northeastern Ohio University College Of Medicine, 2002
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 8599 Haven Ave.

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

  1. Alfonso Carrillo, M.D.Diagnostic Radiology Physician1316906894
  2. Steven Cobb, M.D.Diagnostic Radiology Physician1770542110
  3. Van Khanh NguyenDiagnostic Radiology Physician1902078942
  4. Fred Shu, MDDiagnostic Radiology Physician1568435717
  5. Wilbur Sims, M.D.Diagnostic Radiology Physician1346228616
  6. Thuyen Tran, MDDiagnostic Radiology Physician1326235433

Verify Thomas B. Lin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A99016
    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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The practice group's MIPS final score for 2023 (Medicare payment program): 85.6 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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 score86.3
  2. Costout of 100 · 30%43.7
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

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

Bills Medicare through one group practice

  1. Focus Medical ImagingSimi Valley, CA

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

Thomas B. Lin among 4,500 diagnostic radiology physician records in California

Thomas B. Lin, M.D. is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.

  • NPI issued2007 · 48% of these records are older, 41% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2002 · median 2004 among the 3,130 with a school on file
  • Record last updated2012 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Diagnostic Radiology Physician providers in California

There are 4,500 diagnostic radiology physician records in California.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Joel Block, MDRancho Cucamongo, CA 917301225098189
  2. Alfonso Carrillo, M.D.Rancho Cucamonga, CA 917301316906894
  3. Steven Cobb, M.D.Rancho Cucamonga, CA 917301770542110
  4. Curtis Handler, M.D.Rancho Cucamongo, CA 917301649255290
  5. Van Khanh NguyenRancho Cucamonga, CA 917301902078942
  6. Sherman Rhee, M.D.Rancho Cucamonga, CA 917301568481042
  7. Fred Shu, MDRancho Cucamonga, CA 917301568435717
  8. Wilbur Sims, M.D.Rancho Cucamonga, CA 917301346228616

Common questions

What is Thomas B. Lin, M.D.'s NPI number?

Thomas B. Lin, M.D.'s National Provider Identifier (NPI) is 1861698151, issued on Jun 23, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Thomas B. Lin, M.D. located?

The NPPES record lists a practice address at 8599 Haven Ave., Rancho Cucamonga, CA, 91730. Phone: (909) 620-8180. Providers update this record themselves, so call before visiting.

How can I verify Thomas B. Lin, M.D.'s license?

NPPES lists California license number A99016, 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.

What is Thomas B. Lin, M.D.'s MIPS final score?

The 2023 MIPS final score is 85.6 of 100, reported for the practice group. 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.