Margaret Ryan, MD, MPH
Preventive Medicine/Occupational Environmental Medicine Physician · San Diego, CA
Margaret Ryan, MD, MPH is a preventive medicine/occupational environmental medicine physician with a practice address in San Diego, California, and NPI 1619977618, issued on Aug 1, 2005. Check the license on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Margaret Ryan
- Credential
- MD, MPH
- Primary taxonomy
- Preventive Medicine/Occupational Environmental Medicine Physician 2083P0500X
- License number
- D42576 MD
Self-reported in NPPES; status is on the state search - Practice location
- Nhrc Code 25, San Diego, CA 92186
- Phone
- (619) 553-8097
- Enumerated
- Aug 1, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (619) 553-7601
- Entity
- Type 1 · individual
8 nearest preventive medicine/occupational environmental medicine physician records → All 129 in California → Look up another NPI →
Verify Margaret Ryan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Margaret Ryan among 129 preventive medicine/occupational environmental medicine physician records in California
Margaret Ryan, MD, MPH is one of 129 preventive medicine/occupational environmental medicine physician records with a practice address in California. 32% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 97% newer
- In a Medicare fileNo · 32% of these records are
- In the CMS Doctors and Clinicians fileNo · 11% of these records are
- Record last updated2026 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083P0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Preventive Medicine/Occupational Environmental Medicine Physician providers in California
There are 129 preventive medicine/occupational environmental medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 129 in California → Every provider in San Diego → Preventive Medicine/Occupational Environmental Medicine Physician nationwide →
The 8 preventive medicine/occupational environmental medicine physician records with the nearest ZIP codes
- Kenichi Carrigan, MDSan Diego, CA 921361659341089
- Christine Schindler, D.O.San Diego, CA 921361881663581
- Laura BuehningSan Diego, CA 921301144593989
- Ira Goodman, MDSan Diego, CA 921301942321930
- Paul Manchester, MDSan Diego, CA 921301326548363
- Robert Petrie, MDLa Quinta, CA 922531619138450
- Marcel Brysk, M.D.San Diego, CA 921031174625982
- Christopher Granda, DOSan Diego, CA 921031619391786
Common questions
What is Margaret Ryan, MD, MPH's NPI number?
Margaret Ryan, MD, MPH's National Provider Identifier (NPI) is 1619977618, issued on Aug 1, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Ryan, MD, MPH located?
The NPPES record lists a practice address at Nhrc Code 25, San Diego, CA, 92186. Phone: (619) 553-8097. Providers update this record themselves, so call before visiting.
How can I verify Margaret Ryan, MD, MPH's license?
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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.