Tiffany L. Shay Alexander, M.D.
Occupational Medicine Physician · Chula Vista, CA
Tiffany L. Shay Alexander, M.D. is an occupational medicine physician with a practice address in Chula Vista, California, and NPI 1346253903, issued on Aug 14, 2006. Check the license (California A68353, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tiffany L. Shay Alexander
- Credential
- M.D.
- Primary taxonomy
- Occupational Medicine Physician 2083X0100X
- License number
- A68353 CA
Self-reported in NPPES; status is on the state search - Practice location
- 525 3RD Ave, Chula Vista, CA 91910
- Phone
- (619) 585-4050
- Enumerated
- Aug 14, 2006
- Record last updated
- Jun 27, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (619) 585-4054
- Medicaid ID
- 00A683530 CA
- Medicare enrollment
- Enrolled (PECOS I20100810001130); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest occupational medicine physician records → All 415 in California → Look up another NPI →
Also registered at 525 3RD Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brian Anderson, M.D.Rheumatology Physician1740298074
- Richard Campbell, M.D.Family Medicine Physician1497764393
- Michael Chambers, M.D.Internal Medicine Physician1740298843
- George Colson, M.D.Occupational Medicine Physician1023028503
- Arthur Corpus, P.A.Physician Assistant1366451627
- Moreno David, P.A.Physician Assistant1588673842
Verify Tiffany L. Shay Alexander in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A68353Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 100% of the cost of the top drugs
118 Medicare Part D claims for 118 beneficiaries, against an average of 794 among the 463 providers of this specialty who prescribed in Part D. Brand-name drugs were over 99% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Mresvia110 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
- Sharp Rees-Stealy Medical Group IncChula Vista, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tiffany L. Shay Alexander among 415 occupational medicine physician records in California
Tiffany L. Shay Alexander, 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
- Graduated1997 · median 1995 among the 51 with a school on file
- Record last updated2013 · 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 Chula Vista → Occupational Medicine Physician nationwide →
The 8 occupational medicine physician records with the nearest ZIP codes
- George Colson, M.D.Chula Vista, CA 919101023028503
- Kathy Head, M.D.Chula Vista, CA 919101528171600
- Michael Hughes, M.D.La Mesa, CA 919421831109255
- Craig Uejo, M.D.La Mesa, CA 919421932210440
- Laurie Pierce, MDCarlsbad, CA 920081295728442
- Monte Bible, D.O.Escondido, CA 920271053385146
- Christopher Bickford, MDLa Jolla, CA 920371962599225
- Robert Dinenberg, M.D.La Jolla, CA 920371841436706
Common questions
What is Tiffany L. Shay Alexander, M.D.'s NPI number?
Tiffany L. Shay Alexander, M.D.'s National Provider Identifier (NPI) is 1346253903, issued on Aug 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tiffany L. Shay Alexander, M.D. located?
The NPPES record lists a practice address at 525 3RD Ave, Chula Vista, CA, 91910. Phone: (619) 585-4050. Providers update this record themselves, so call before visiting.
How can I verify Tiffany L. Shay Alexander, M.D.'s license?
NPPES lists California license number A68353, 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 Tiffany L. Shay Alexander, M.D. prescribe under Medicare Part D?
In 2024, Tiffany L. Shay Alexander, M.D. had 118 Medicare Part D claims for 118 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.