Benjamin Kretzmann, M.D.
NPI 1881824399 · Rheumatology Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Benjamin Kretzmann, M.D. is a Rheumatology Physician provider in Los Angeles, CA (NPI 1881824399).
Provider details
- NPI number
- 1881824399
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A116280 (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
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
6,359 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 | 644 | $140 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 466 | $9 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 458 | $83 |
| Red Blood Cell Sedimentation Rate, to Detect Inflammation, Non-Automated85651 | 360 | $4 |
| Measurement C-Reactive Protein for Detection of Infection Or Inflammation86140 | 359 | $5 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 357 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Duloxetine Hcl | 111 | 22 |
| Gabapentin | 88 | 27 |
| Leflunomide | 69 | 17 |
| Hydroxychloroquine Sulfate | 58 | 16 |
| Celecoxib | 42 | 16 |
| Prednisone | 38 | 16 |
| Tizanidine Hcl | 36 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$88 across 4 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)
- 8640 W 3rd St Ste 300Los Angeles, CA 90048-3386Phone: (310) 659-7878
Registry dates
- Enumerated
- 2009-07-17
- Last updated
- 2022-02-28
- Certified
- 2022-02-28
Frequently asked questions
- What is Benjamin Kretzmann's NPI number?
- Benjamin Kretzmann's National Provider Identifier (NPI) is 1881824399, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Benjamin Kretzmann's specialty?
- Benjamin Kretzmann is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Benjamin Kretzmann located?
- Benjamin Kretzmann's practice location on file with NPPES is 8700 Beverly Blvd Rm 5512, Los Angeles, CA 90048.
- What is Benjamin Kretzmann's phone number?
- The practice phone number listed in the NPPES registry for Benjamin Kretzmann is (310) 423-5161.
- Does Benjamin Kretzmann accept Medicare?
- Benjamin Kretzmann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Benjamin Kretzmann's NPI active?
- Yes — Benjamin Kretzmann's NPI (1881824399) is active in the NPPES registry as of the last update on 2022-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.