Brendan Cerk, MD
NPI 1558716357 · Rheumatology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brendan Cerk, MD is a Rheumatology Physician provider in Los Angeles, CA (NPI 1558716357).
Provider details
- NPI number
- 1558716357
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
228 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 | 75 | $134 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 56 | $192 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 32 | $91 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 28 | $180 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 21 | $16 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 130 | 50 |
| Alendronate Sodium | 123 | 47 |
| Prednisone | 108 | 34 |
| Methotrexate Sodiumbrand: Methotrexate | 107 | 41 |
| Denosumabbrand: Prolia | 64 | 42 |
| Gabapentin | 54 | 25 |
| Adalimumabbrand: Humira(cf) Pen |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$260 across 13 records (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
Additional practice locations (1)
- 12462 Putnam St Ste 402Whittier, CA 90602-1049Phone: (562) 967-2788Fax: (562) 789-4468
Registry dates
- Enumerated
- 2016-04-28
- Last updated
- 2025-05-27
- Certified
- 2021-09-14
Frequently asked questions
- What is Brendan Cerk's NPI number?
- Brendan Cerk's National Provider Identifier (NPI) is 1558716357, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brendan Cerk's specialty?
- Brendan Cerk is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Brendan Cerk located?
- Brendan Cerk's practice location on file with NPPES is 1245 Wilshire Blvd Ste 307, Los Angeles, CA 90017-4803.
- What is Brendan Cerk's phone number?
- The practice phone number listed in the NPPES registry for Brendan Cerk is (213) 482-2770.
- Does Brendan Cerk accept Medicare?
- Brendan Cerk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brendan Cerk's NPI active?
- Yes — Brendan Cerk's NPI (1558716357) is active in the NPPES registry as of the last update on 2025-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.