Chi-Whei Lin, M.D.
Internal Medicine Physician · Laguna Hills, CA
Chi-Whei Lin, M.D. is an internal medicine physician with a practice address in Laguna Hills, California, and NPI 1114057254, issued on Mar 7, 2007. Check the license (California A55435, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chi-Whei Lin
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A55435 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23521 Paseo DE Valencia, Laguna Hills, CA 92653
- Phone
- (949) 716-4555
- Enumerated
- Mar 7, 2007
- Record last updated
- May 6, 2026
- Fax
- (949) 716-4437
- Medicaid ID
- A55435P47 CA
- Medicare enrollment
- Enrolled (PECOS I20101019000675); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 23521 Paseo DE Valencia
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Peter Abas, D.D.S.General Practice Dentistry1154339273
- Jennifer Carman, P.T.Physical Therapist1285827717
- Lido Chen, MDInterventional Pain Medicine Physician1891781753
- Priscilla Chow, NPFamily Nurse Practitioner1376510743
- Lori ClarkInternal Medicine Physician1972634897
- Charles Eifrig, M.D.Retina Specialist (Ophthalmology) Physician1306812979
Verify Chi-Whei Lin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A55435Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average internal medicine physician in 2024
6,411 Medicare Part D claims for 457 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 48 claims were for opioids.
Most prescribed
- Atorvastatin Calcium429 claims
- Amlodipine Besylate404 claims
- Losartan Potassium363 claims
- Meloxicam289 claims
- Metoprolol Succinate253 claims
- Omeprazole237 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.
Industry payments in 2024: $368.29
17 payments; by number, the most common kind was food and beverage; the largest payer was Revance Therapeutics, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Chi-Whei Lin among 17,696 internal medicine physician records in California
Chi-Whei Lin, M.D. is one of 17,696 internal medicine 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1994 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 internal medicine physician records list a practice address in Laguna Hills
They are 56 of the 2,069 NPPES records with a practice address in Laguna Hills, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Laguna Hills → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Humberto Boccardo, M.D.Laguna Hills, CA 926531689679458
- Arthur Daigneault, MDLaguna Hills, CA 926531609845361
- Raymond Fernandez, MDLaguna Hills, CA 926531629039532
- Ali Ghazvini, M.D.Laguna Hills, CA 926531104865153
- Brian HenryLaguna Hills, CA 926531629047824
- Robert Lazatin, M.D.Laguna Hills, CA 926531700865755
- Alan Lo, MDLaguna Hills, CA 926531982683637
- Lawrence Luppi, M.D.Laguna Hills, CA 926531952356727
Common questions
What is Chi-Whei Lin, M.D.'s NPI number?
Chi-Whei Lin, M.D.'s National Provider Identifier (NPI) is 1114057254, issued on Mar 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Chi-Whei Lin, M.D. located?
The NPPES record lists a practice address at 23521 Paseo DE Valencia, Laguna Hills, CA, 92653. Phone: (949) 716-4555. Providers update this record themselves, so call before visiting.
How can I verify Chi-Whei Lin, M.D.'s license?
NPPES lists California license number A55435, 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 Chi-Whei Lin, M.D. prescribe under Medicare Part D?
In 2024, Chi-Whei Lin, M.D. had 6,411 Medicare Part D claims for 457 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.