Mary Hannon, MD
NPI 1275824518 · Emergency Medicine Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Hannon, MD is a Emergency Medicine Physician provider in Torrance, CA (NPI 1275824518).
Provider details
- NPI number
- 1275824518
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A123928 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,094 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 321 | $99 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 150 | $16 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 109 | $121 |
| X-Ray of Chest, 2 Views71046 | 108 | $38 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 103 | $138 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus87426 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 68 | 68 |
| Cephalexin | 62 | 61 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 41 | 40 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 30 | 30 |
| Doxycycline Monohydrate | 28 | 27 |
| Moxifloxacin Hclbrand: Moxifloxacin | 22 | 22 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-04-20
- Last updated
- 2023-12-13
- Certified
- 2023-12-13
Frequently asked questions
- What is Mary Hannon's NPI number?
- Mary Hannon's National Provider Identifier (NPI) is 1275824518, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Hannon's specialty?
- Mary Hannon is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Hannon located?
- Mary Hannon's practice location on file with NPPES is 2900 Lomita Blvd, Torrance, CA 90505-5102.
- What is Mary Hannon's phone number?
- The practice phone number listed in the NPPES registry for Mary Hannon is (301) 784-3740.
- Does Mary Hannon accept Medicare?
- Mary Hannon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Hannon's NPI active?
- Yes — Mary Hannon's NPI (1275824518) is active in the NPPES registry as of the last update on 2023-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.