Jonathan James Wanglun Chan, M.D.
Pulmonary Disease Physician · Thousand Oaks, CA
Jonathan James Wanglun Chan, M.D. is a pulmonary disease physician with a practice address in Thousand Oaks, California, and NPI 1982016929, issued on May 26, 2014. Check the license (California C194944, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jonathan James Wanglun Chan
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- C194944 CA
Self-reported in NPPES; status is on the state search - Practice location
- 248 Hampshire RD Ste 100, Thousand Oaks, CA 91361
- Phone
- (805) 370-0040
- Enumerated
- May 26, 2014
- Record last updated
- Aug 27, 2024
- Fax
- (304) 598-4871
- Medicare enrollment
- Enrolled (PECOS I20240717004881); accepts Medicare assignment
- Medical or professional school
- Eastern Virginia Medical School, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 1,443 in California → Look up another NPI →
Also registered at 248 Hampshire RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nazanin Asvadi, MDDiagnostic Radiology Physician1689197196
- Diana CizmadijaNurse Practitioner1629408307
- Kosha Doshi, DOFamily Medicine Physician1588124903
- Alicia Guevara, M.D.Family Medicine Physician1629295217
- Nithyalakshmi NambiarInternal Medicine Physician1689237182
- Mike Oulashian, M.D.Family Medicine Physician1164694212
Verify Jonathan James Wanglun Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C194944Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% more Medicare Part D claims than the average pulmonary disease physician in 2024
1,871 Medicare Part D claims for 403 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 65% of claims.
Most prescribed
- Albuterol Sulfate Hfa221 claims
- Symbicort146 claims
- Trelegy Ellipta115 claims
- Spiriva Respimat110 claims
- Prednisone94 claims
- Montelukast Sodium77 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 practice group's MIPS final score for 2023 (Medicare payment program): 79.4 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $94.95
1 payment: education; the largest payer was Sanofi-Aventis U.S. LLC. The 8,806 providers of this specialty with any payment received $5,159.88 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.
Bills Medicare through one group practice
- The Regents OF The University OF CaliforniaThousand Oaks, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan James Wanglun Chan among 1,443 pulmonary disease physician records in California
Jonathan James Wanglun Chan, M.D. is one of 1,443 pulmonary disease physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 80% of them.
- NPI issued2014 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2014 · median 2002 among the 1,061 with a school on file
- Record last updated2024 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in California
There are 1,443 pulmonary disease physician records in California.
All 1,443 in California → Every provider in Thousand Oaks → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Miguel Gonzalez, M.D.Thousand Oaks, CA 913611902808959
- Sherif Henein, M.D.Lake Sherwood, CA 913611225031784
- Maryum Merchant, M.D.Westlake Village, CA 913611902024532
- Tamana AhmadiThousand Oaks, CA 913601427437730
- Lawrence Baker, M.D.Thousand Oaks, CA 913601922000983
- Paul Block, M.D.Thousand Oaks, CA 913601598767550
- Ali Farrokh, M.D.Thousand Oaks, CA 913601164750170
- Andres Giron, M.D.Thousand Oaks, CA 913601922027630
Common questions
What is Jonathan James Wanglun Chan, M.D.'s NPI number?
Jonathan James Wanglun Chan, M.D.'s National Provider Identifier (NPI) is 1982016929, issued on May 26, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan James Wanglun Chan, M.D. located?
The NPPES record lists a practice address at 248 Hampshire RD Ste 100, Thousand Oaks, CA, 91361. Phone: (805) 370-0040. Providers update this record themselves, so call before visiting.
How can I verify Jonathan James Wanglun Chan, M.D.'s license?
NPPES lists California license number C194944, 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 Jonathan James Wanglun Chan, M.D. prescribe under Medicare Part D?
In 2024, Jonathan James Wanglun Chan, M.D. had 1,871 Medicare Part D claims for 403 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. Part D covers Medicare prescriptions only.
What is Jonathan James Wanglun Chan, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.4 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.