Rachel Brook, M.D.
NPI 1184998049 · Internal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachel Brook, M.D. is a Internal Medicine Physician provider in Los Angeles, CA (NPI 1184998049).
Provider details
- NPI number
- 1184998049
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A119836 (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
14 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
202 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 | 52 | $77 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 49 | $123 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 31 | $52 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 21 | $180 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 20 | $57 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 16 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 51 | 14 |
| Metformin Hclbrand: Metformin Hcl Er | 33 | 13 |
| Losartan Potassium | 31 | — |
| Semaglutidebrand: Ozempic | 27 | — |
| Rosuvastatin Calcium | 22 | — |
| Famotidine | 21 | — |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-02-23
- Last updated
- 2013-08-23
Frequently asked questions
- What is Rachel Brook's NPI number?
- Rachel Brook's National Provider Identifier (NPI) is 1184998049, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachel Brook's specialty?
- Rachel Brook is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Rachel Brook located?
- Rachel Brook's practice location on file with NPPES is 757 Westwood Plz Ste 7501, Los Angeles, CA 90095-8358.
- What is Rachel Brook's phone number?
- The practice phone number listed in the NPPES registry for Rachel Brook is (310) 825-7375.
- Does Rachel Brook accept Medicare?
- Rachel Brook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachel Brook's NPI active?
- Yes — Rachel Brook's NPI (1184998049) is active in the NPPES registry as of the last update on 2013-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.