Gregory Lewis, M.D., F.A.A.F.P.
NPI 1225078363 · Family Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Lewis, M.D., F.A.A.F.P. is a Family Medicine Physician provider in Los Angeles, CA (NPI 1225078363).
Provider details
- NPI number
- 1225078363
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., F.A.A.F.P.
- Sex
- Male
- Sole proprietor
- No
- License
- A142894 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 32 | 12 |
| Amlodipine Besylate | 16 | — |
| Metformin Hcl | 15 | — |
| Losartan Potassium | 15 | — |
| Gabapentin | 14 | — |
| Lisinopril | 12 | — |
| Pen Needle, Diabeticbrand: Techlite Pen Needle |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$116 across 5 records (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
- 2006-06-07
- Last updated
- 2021-07-28
- Certified
- 2021-07-28
Frequently asked questions
- What is Gregory Lewis's NPI number?
- Gregory Lewis's National Provider Identifier (NPI) is 1225078363, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Lewis's specialty?
- Gregory Lewis is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Lewis located?
- Gregory Lewis's practice location on file with NPPES is 1400 S Grand Ave, Los Angeles, CA 90015-3048.
- What is Gregory Lewis's phone number?
- The practice phone number listed in the NPPES registry for Gregory Lewis is (213) 744-0801.
- Does Gregory Lewis accept Medicare?
- Gregory Lewis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Lewis's NPI active?
- Yes — Gregory Lewis's NPI (1225078363) is active in the NPPES registry as of the last update on 2021-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.