Leo Maffey, M.D.
NPI 1336342450 · Internal Medicine Physician · Sylmar, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leo Maffey, M.D. is a Internal Medicine Physician provider in Sylmar, CA (NPI 1336342450).
Provider details
- NPI number
- 1336342450
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A94498 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 95 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 337 | 133 |
| Amlodipine Besylate | 272 | 98 |
| Losartan Potassium | 237 | 76 |
| Pravastatin Sodium | 203 | 61 |
| Lisinopril | 199 | 64 |
| Levothyroxine Sodium | 159 | 46 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-06
- Last updated
- 2021-10-14
- Certified
- 2021-10-14
Frequently asked questions
- What is Leo Maffey's NPI number?
- Leo Maffey's National Provider Identifier (NPI) is 1336342450, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leo Maffey's specialty?
- Leo Maffey is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leo Maffey located?
- Leo Maffey's practice location on file with NPPES is 14445 Olive View Dr Rm 6b119-H, Sylmar, CA 91342-1437.
- What is Leo Maffey's phone number?
- The practice phone number listed in the NPPES registry for Leo Maffey is (818) 364-3031.
- Does Leo Maffey accept Medicare?
- Leo Maffey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leo Maffey's NPI active?
- Yes — Leo Maffey's NPI (1336342450) is active in the NPPES registry as of the last update on 2021-10-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.