Matthew Lefferman, DO
NPI 1184622417 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Lefferman, DO is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1184622417).
Provider details
- NPI number
- 1184622417
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 20A8857 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
39,737 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) |
|---|---|---|
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 8,611 | $66 |
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 6,166 | $51 |
| Residence Visit for Established Patient With High Level of Medical Decision Making, Per Day, If Using Time, at Least 60 Minutes99350 | 3,821 | $191 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 3,338 | $131 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 2,236 | $97 |
| Telephone Medical Discussion With Physician, 21-30 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 297 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 1,938 | 237 |
| Quetiapine Fumarate | 1,849 | 241 |
| Atorvastatin Calcium | 1,782 | 248 |
| Amlodipine Besylate | 1,398 | 185 |
| Trazodone Hcl | 1,365 | 184 |
| Furosemide | 1,323 | 200 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$56 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
- 2005-07-11
- Last updated
- 2011-01-13
Frequently asked questions
- What is Matthew Lefferman's NPI number?
- Matthew Lefferman's National Provider Identifier (NPI) is 1184622417, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Lefferman's specialty?
- Matthew Lefferman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Lefferman located?
- Matthew Lefferman's practice location on file with NPPES is 9233 W. Pico Blvd., Los Angeles, CA 90035-1385.
- What is Matthew Lefferman's phone number?
- The practice phone number listed in the NPPES registry for Matthew Lefferman is (310) 356-8146.
- Does Matthew Lefferman accept Medicare?
- Matthew Lefferman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Lefferman's NPI active?
- Yes — Matthew Lefferman's NPI (1184622417) is active in the NPPES registry as of the last update on 2011-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.