Louis Scarcella, MD
NPI 1821052598 · Internal Medicine Physician · Laguna Hills, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Louis Scarcella, MD is a Internal Medicine Physician provider in Laguna Hills, CA (NPI 1821052598).
Provider details
- NPI number
- 1821052598
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G40507 (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
2,117 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 676 | $138 |
| Annual, Face-To-Face Intensive Behavioral Therapy for Cardiovascular Disease, Individual, 15 MinutesG0446 | 224 | $27 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 221 | $21 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 210 | $21 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 209 | $140 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 88 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 263 | 71 |
| Rosuvastatin Calcium | 249 | 71 |
| Levothyroxine Sodium | 230 | 60 |
| Amlodipine Besylate | 170 | 45 |
| Lisinopril | 156 | 42 |
| Losartan Potassium | 144 | 35 |
| Pantoprazole Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$34 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
- 2006-04-12
- Last updated
- 2011-09-29
Frequently asked questions
- What is Louis Scarcella's NPI number?
- Louis Scarcella's National Provider Identifier (NPI) is 1821052598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Scarcella's specialty?
- Louis Scarcella is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Louis Scarcella located?
- Louis Scarcella's practice location on file with NPPES is 24221 Calle De La Louisa, Laguna Hills, CA 92653-7638.
- What is Louis Scarcella's phone number?
- The practice phone number listed in the NPPES registry for Louis Scarcella is (949) 770-7691.
- Does Louis Scarcella accept Medicare?
- Louis Scarcella is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Louis Scarcella's NPI active?
- Yes — Louis Scarcella's NPI (1821052598) is active in the NPPES registry as of the last update on 2011-09-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.