Erin Cook, M.D.
NPI 1558504381 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erin Cook, M.D. is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1558504381).
Provider details
- NPI number
- 1558504381
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A116372 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 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
1,088 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 375 | $74 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 132 | $90 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 129 | $17 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 84 | $65 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 | $63 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 105 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 395 | 103 |
| Levothyroxine Sodium | 256 | 62 |
| Amlodipine Besylate | 241 | 72 |
| Alendronate Sodium | 167 | 42 |
| Losartan Potassium | 154 | 45 |
| Donepezil Hcl | 123 | 28 |
| Pantoprazole Sodium | 122 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-04-09
- Last updated
- 2014-08-05
Frequently asked questions
- What is Erin Cook's NPI number?
- Erin Cook's National Provider Identifier (NPI) is 1558504381, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Cook's specialty?
- Erin Cook is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Erin Cook located?
- Erin Cook's practice location on file with NPPES is 200 Ucla Medical Plz, Los Angeles, CA 90095-7417.
- What is Erin Cook's phone number?
- The practice phone number listed in the NPPES registry for Erin Cook is (310) 206-8272.
- Does Erin Cook accept Medicare?
- Erin Cook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erin Cook's NPI active?
- Yes — Erin Cook's NPI (1558504381) is active in the NPPES registry as of the last update on 2014-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.