Mary Cecilia Hannon, MD
Emergency Medicine Physician · Torrance, CA
Mary Cecilia Hannon, MD is an emergency medicine physician with a practice address in Torrance, California, and NPI 1275824518, issued on Apr 20, 2011. Check the license (California A123928, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mary Cecilia Hannon
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A123928 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2900 Lomita Blvd, Torrance, CA 90505
- Phone
- (301) 784-3740
- Enumerated
- Apr 20, 2011
- Record last updated
- Dec 13, 2023
- Medicare enrollment
- Enrolled (PECOS I20130813000508); accepts Medicare assignment
- Medical or professional school
- Albert Einstein College Of Medicine Of Yeshiva University, 2008
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2900 Lomita Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Brian Miura, MDEmergency Medical Services (Emergency Medicine) Physician1801820527
- Lynn Morton, RDRegistered Dietitian1588047922
Verify Mary Cecilia Hannon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A123928Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average emergency medicine physician in 2024
510 Medicare Part D claims for 418 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Hyclate68 claims
- Cephalexin62 claims
- Amoxicillin-Clavulanate Potass41 claims
- Albuterol Sulfate Hfa30 claims
- Doxycycline Monohydrate28 claims
- Moxifloxacin22 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
- Torrance Health Association IncManhattan Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Cecilia Hannon among 7,751 emergency medicine physician records in California
Mary Cecilia Hannon, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 60% of them.
- NPI issued2011 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2008 · median 2011 among the 4,560 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
197 emergency medicine physician records list a practice address in Torrance
They are 197 of the 8,901 NPPES records with a practice address in Torrance, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Torrance → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Elisa Anhalt, MDTorrance, CA 905051194773424
- Ellen BakerTorrance, CA 905051588612477
- Michael Baker, MDTorrance, CA 905051922030238
- Darren Bedolla, MDTorrance, CA 905051114956299
- Mark Gellman, DOTorrance, CA 905051669493375
- Robert Gibbs, MDTorrance, CA 905051043326366
- Kane Kuo, M.D.Torrance, CA 905051588600993
- Brett Lorber, MDTorrance, CA 905051225148042
Common questions
What is Mary Cecilia Hannon, MD's NPI number?
Mary Cecilia Hannon, MD's National Provider Identifier (NPI) is 1275824518, issued on Apr 20, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Mary Cecilia Hannon, MD located?
The NPPES record lists a practice address at 2900 Lomita Blvd, Torrance, CA, 90505. Phone: (301) 784-3740. Providers update this record themselves, so call before visiting.
How can I verify Mary Cecilia Hannon, MD's license?
NPPES lists California license number A123928, 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 Mary Cecilia Hannon, MD prescribe under Medicare Part D?
In 2024, Mary Cecilia Hannon, MD had 510 Medicare Part D claims for 418 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.