Sean Spencer London, MD
Diagnostic Radiology (CMS) · Northridge, CA
At a glance
18436 Roscoe Blvd, Northridge, CA 91325-4107
NPPES record updated Nov 12, 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
18436 Roscoe BlvdNorthridge, CA 91325-4107
Additional reported practice locations
1000 N Oak AveMarshfield, WI 544495703
Phone: 7153875511 1960 Ogden St
Suite 400
Denver, CO 802183666
Phone: 3033181540
Fax: 3033182481
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 2013
- CMS specialties
- Diagnostic Radiology
Practice groups
Reported hospital affiliations
- Ascension Se Wisconsin Hospital Milwaukee, WI
- Marshfield Medical Center - Beaver Dam (Mmc-Bd) Beaver Dam, WI
- Marshfield Medical Center - Minocqua Minocqua, WI
- Marshfield Medical Center - Rice Lake Rice Lake, WI
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.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
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
- Diagnostic Radiology (CMS)
- Taxonomy code
- 2085B0100X
- Enumeration date
- Jun 28, 2013
- Record updated
- Nov 12, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
2085B0100X
License reported: 63106 WI
2085B0100X · Primary
License reported: 161034 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
18436 Roscoe BlvdNorthridge, CA 91325-4107
- Phone
- (818) 435-1400
Mailing address
1460 PASTEL LN STE 400NOVATO, CA 949474524
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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