Muhammad Muslim, MD
Hematology/Oncology (CMS) · Riverside, CA
At a glance
4646 Brockton Ave Ste 203, Riverside, CA 92506-0104
NPPES record updated Nov 20, 2025. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
4646 Brockton Ave Ste 203Riverside, CA 92506-0104
Additional reported practice locations
2220 Canterbury Dr Ste 150Hays, KS 676012370
Phone: 7856235774
Fax: 7856235775
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1988
- CMS specialties
- Hematology/Oncology
Practice groups
Reported hospital affiliations
- Centura St. Catherine-Dodge City Dodge City, KS
- Graham County Hospital Hill City, KS
- Hays Medical Center Hays, KS
- Russell Regional Hospital Russell, KS
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Find providers with a similar service mix
Compare 2024 published Medicare activity in the same reported specialty, here or in another city.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $2,354.79 |
| Long-term medical supply or device loan | $598.20 |
Reporting companies
| Company | Amount |
|---|---|
| NOVARTIS PHARMACEUTICALS CORPORATION | $739.06 |
| PFIZER INC. | $181.98 |
| CELGENE CORPORATION | $166.97 |
| EISAI INC. | $165.58 |
| ASTRAZENECA PHARMACEUTICALS LP | $149.21 |
| BAYER HEALTHCARE PHARMACEUTICALS INC. | $108.52 |
| JANSSEN BIOTECH, INC. | $100.78 |
| ABBVIE INC. | $96.66 |
| Other reporting companies | $1,244.23 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Hematology/Oncology (CMS)
- Taxonomy code
- 207RH0003X
- Enumeration date
- Nov 6, 2006
- Record updated
- Nov 20, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207RH0003X
License reported: 44404 WI
207RH0003X · Primary
License reported: C192251 CA
207RH0003X
License reported: 0452015 KS
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
4646 Brockton Ave Ste 203Riverside, CA 92506-0104
- Phone
- (951) 394-7028
- Fax
- (951) 224-9899
Mailing address
18000 STUDEBAKER RD STE 800CERRITOS, CA 907032671
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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