Elizabeth Arnold, MD
NPI 1538352554 · Internal Medicine Physician · Sylmar, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elizabeth Arnold, MD is a Internal Medicine Physician provider in Sylmar, CA (NPI 1538352554).
Provider details
- NPI number
- 1538352554
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A99241 (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
18 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
63 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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 26 | $51 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 23 | $123 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 14 | $179 |
Typical Medicare-allowed amounts for these services range $51–$179 (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 | 28 | 15 |
| Amlodipine Besylate | 26 | 11 |
| Apixabanbrand: Eliquis | 20 | 11 |
| Furosemide | 18 | 11 |
| Cefpodoxime Proxetil | 17 | 17 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 17 | — |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-08-22
- Last updated
- 2021-11-29
- Certified
- 2020-09-16
Frequently asked questions
- What is Elizabeth Arnold's NPI number?
- Elizabeth Arnold's National Provider Identifier (NPI) is 1538352554, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth Arnold's specialty?
- Elizabeth Arnold is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Elizabeth Arnold located?
- Elizabeth Arnold's practice location on file with NPPES is 14445 Olive View Dr, Sylmar, CA 91342-1437.
- What is Elizabeth Arnold's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth Arnold is (818) 364-3205.
- Does Elizabeth Arnold accept Medicare?
- Elizabeth Arnold is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elizabeth Arnold's NPI active?
- Yes — Elizabeth Arnold's NPI (1538352554) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.