Gregory Roybal, M.D.
NPI 1780734491 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Roybal, M.D. is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1780734491).
Provider details
- NPI number
- 1780734491
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A55881 (CA)
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
19 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
133 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 69 | $99 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 64 | $9 |
Typical Medicare-allowed amounts for these services range $9–$99 (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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 61 | 20 |
| Levothyroxine Sodium | 41 | 12 |
| Amlodipine Besylate | 38 | 13 |
| Metformin Hcl | 37 | — |
| Metformin Hclbrand: Metformin Hcl Er | 31 | — |
| Losartan Potassium | 29 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-12
- Last updated
- 2007-07-09
Frequently asked questions
- What is Gregory Roybal's NPI number?
- Gregory Roybal's National Provider Identifier (NPI) is 1780734491, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Roybal's specialty?
- Gregory Roybal is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Roybal located?
- Gregory Roybal's practice location on file with NPPES is 245 S Fetterly Ave, Los Angeles, CA 90022-1605.
- What is Gregory Roybal's phone number?
- The practice phone number listed in the NPPES registry for Gregory Roybal is (323) 780-2216.
- Does Gregory Roybal accept Medicare?
- Gregory Roybal is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Roybal's NPI active?
- Yes — Gregory Roybal's NPI (1780734491) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.