Quick answers
- Does Matthew B. Kollefrath accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew B. Kollefrath accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Matthew B. Kollefrath see?
- In 2024, CMS data shows 29 Original Medicare patients and 182 services for Matthew B. Kollefrath. This counts Original Medicare only and measures volume, not quality.
- What is Matthew B. Kollefrath's NPI number?
- 1568998516. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Matthew B. Kollefrath, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 29 |
|---|---|
| Services billed to Medicare | 182 |
| Different services or procedures | 25 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)31 services
- Insertion of needle into vein for collection of blood sample (36415)24 services
- Blood test, basic group of blood chemicals (calcium, total) (80048)15 services
- Liver function blood test panel (80076)15 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)14 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure66%
- High cholesterol66%
- Arthritis38%
Practice locations
Addresses where Matthew B. Kollefrath is enrolled with Medicare (CMS data updated October 2, 2026).
- 435 N Roxbury Dr, Suite 300Beverly Hills, CA 90210 (310) 550‑7421
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Beverly Hills
Clinicians with the same Medicare primary specialty in Beverly Hills, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Florida College Of Medicine |
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568998516 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians