Leland G. Wessel, M.D.
Occupational Medicine Physician · San Diego, CA
Leland G. Wessel, M.D. is an occupational medicine physician with a practice address in San Diego, California, and NPI 1609988633, issued on Aug 31, 2006. Check the license (California G55184, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Leland G. Wessel
- Credential
- M.D.
- Primary taxonomy
- Occupational Medicine Physician 2083X0100X
- License number
- G55184 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4085 Governor Dr, San Diego, CA 92122
- Phone
- (714) 389-5700
- Enumerated
- Aug 31, 2006
- Record last updated
- Aug 18, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (714) 389-6973
- Medicaid ID
- 00G551840 CA
- Medicare enrollment
- Enrolled (PECOS I20220921003077); may accept Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 1984
- Entity
- Type 1 · individual
8 nearest occupational medicine physician records → All 415 in California → Look up another NPI →
Also registered at 4085 Governor Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Natali Bittar, M.D.Family Medicine Physician1801097118
- Katayoun Khorrami, MDFamily Medicine Physician1932539699
- Karen Prychun, PAPhysician Assistant1902155898
Verify Leland G. Wessel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G55184Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average occupational medicine physician in 2024
62 Medicare Part D claims for 14 beneficiaries, against an average of 794 among the 463 providers of this specialty who prescribed in Part D.
Most prescribed
- Celecoxib11 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.
Bills Medicare through one group practice
- American Current Care OF Washington PSTacoma, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leland G. Wessel among 415 occupational medicine physician records in California
Leland G. Wessel, M.D. is one of 415 occupational medicine physician records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 57% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated1984 · median 1995 among the 51 with a school on file
- Record last updated2016 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083X0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Occupational Medicine Physician providers in California
There are 415 occupational medicine physician records in California.
All 415 in California → Every provider in San Diego → Occupational Medicine Physician nationwide →
The 8 occupational medicine physician records with the nearest ZIP codes
- Eric AmsterSan Diego, CA 921221265665913
- Rajy Abulhosn, M.D.San Diego, CA 921231396753703
- Ganna Breland, D.O.San Diego, CA 921211316141898
- Thanh Duong, MDSan Diego, CA 921231699034926
- Thomas Elias, M.D.San Diego, CA 921231710092184
- Ashley Ennedy, DOSan Diego, CA 921211861908386
- Brian Hoang, PASan Diego, CA 921211073239646
- Kathlyn Ignacio, M.D.San Diego, CA 921231912917345
Common questions
What is Leland G. Wessel, M.D.'s NPI number?
Leland G. Wessel, M.D.'s National Provider Identifier (NPI) is 1609988633, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leland G. Wessel, M.D. located?
The NPPES record lists a practice address at 4085 Governor Dr, San Diego, CA, 92122. Phone: (714) 389-5700. Providers update this record themselves, so call before visiting.
How can I verify Leland G. Wessel, M.D.'s license?
NPPES lists California license number G55184, 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 Leland G. Wessel, M.D. prescribe under Medicare Part D?
In 2024, Leland G. Wessel, M.D. had 62 Medicare Part D claims for 14 beneficiaries; the average among occupational medicine physician prescribers was 794. 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.