John Henderson, M.D.
NPI 1518303775 · Emergency Medicine Physician · Gardena, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Henderson, M.D. is a Emergency Medicine Physician provider in Gardena, CA (NPI 1518303775).
Provider details
- NPI number
- 1518303775
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
563 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 170 | $9 |
| Critical Care, First 30-74 Minutes99291 | 145 | $230 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 135 | $187 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 88 | $129 |
| Emergent Insertion of Breathing Tube Into Windpipe Using an Endoscope31500 | 13 | $150 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 12 | $76 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Naproxen | 28 | 27 |
| Cephalexin | 22 | 22 |
| Prednisone | 21 | 20 |
| Azithromycin | 17 | 16 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 11 | — |
| Ibuprofen | 11 | 11 |
| Ondansetronbrand: Ondansetron Odt | 11 | 11 |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-05-15
- Last updated
- 2016-07-06
Frequently asked questions
- What is John Henderson's NPI number?
- John Henderson's National Provider Identifier (NPI) is 1518303775, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Henderson's specialty?
- John Henderson is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Henderson located?
- John Henderson's practice location on file with NPPES is 1145 W Redondo Beach Blvd, Gardena, CA 90247-3511.
- What is John Henderson's phone number?
- The practice phone number listed in the NPPES registry for John Henderson is (310) 532-4200.
- Does John Henderson accept Medicare?
- John Henderson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Henderson's NPI active?
- Yes — John Henderson's NPI (1518303775) is active in the NPPES registry as of the last update on 2016-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.