Leonard Lamsen, M.D.
NPI 1902006257 · Emergency Medicine Physician · Memphis, TN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Lamsen, M.D. is a Emergency Medicine Physician provider in Memphis, TN (NPI 1902006257).
Provider details
- NPI number
- 1902006257
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
294 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 High Level of Medical Decision Making99285 | 215 | $160 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 62 | $111 |
| Critical Care, First 30-74 Minutes99291 | 17 | $195 |
Typical Medicare-allowed amounts for these services range $111–$195 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
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 |
|---|---|---|
| Methocarbamol | 22 | 18 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 18 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 11 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 | 17 |
| Ondansetronbrand: Ondansetron Odt | 16 | 16 |
| Doxycycline Hyclate | 12 | 12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-24
- Last updated
- 2015-04-24
Frequently asked questions
- What is Leonard Lamsen's NPI number?
- Leonard Lamsen's National Provider Identifier (NPI) is 1902006257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Lamsen's specialty?
- Leonard Lamsen is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Lamsen located?
- Leonard Lamsen's practice location on file with NPPES is 3030 Covington Pike, Memphis, TN 38128-5048.
- What is Leonard Lamsen's phone number?
- The practice phone number listed in the NPPES registry for Leonard Lamsen is (901) 383-8889.
- Does Leonard Lamsen accept Medicare?
- Leonard Lamsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Lamsen's NPI active?
- Yes — Leonard Lamsen's NPI (1902006257) is active in the NPPES registry as of the last update on 2015-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.