Michael Londner, MD
NPI 1346298700 · Emergency Medicine Physician · Leesburg, VA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Londner, MD is a Emergency Medicine Physician provider in Leesburg, VA (NPI 1346298700).
Provider details
- NPI number
- 1346298700
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- 0101237389 (VA)
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
20 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
1,391 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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 486 | $122 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 458 | $8 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 173 | $178 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 169 | $72 |
| Critical Care, First 30-74 Minutes99291 | 78 | $214 |
| Emergency Department Visit With Straightforward Medical Decision Making99282 | 16 | $42 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 148 | 119 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 62 | 62 |
| Doxycycline Hyclate | 41 | 35 |
| Cefuroxime Axetilbrand: Cefuroxime | 41 | 41 |
| Azithromycin | 34 | 33 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 22 | 22 |
| Ondansetronbrand: Ondansetron Odt |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-05
- Last updated
- 2007-07-08
Frequently asked questions
- What is Michael Londner's NPI number?
- Michael Londner's National Provider Identifier (NPI) is 1346298700, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Londner's specialty?
- Michael Londner is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Londner located?
- Michael Londner's practice location on file with NPPES is 44045 Riverside Parkway, Leesburg, VA 20176.
- What is Michael Londner's phone number?
- The practice phone number listed in the NPPES registry for Michael Londner is (703) 858-6040.
- Does Michael Londner accept Medicare?
- Michael Londner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Londner's NPI active?
- Yes — Michael Londner's NPI (1346298700) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.