Stefan Ruehm, MD
Internal Medicine · Los Angeles, CA
At a glance
100 Ucla Medical Plz Ste 100, Los Angeles, CA 90024-7000
NPPES record updated Mar 24, 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
100 Ucla Medical Plz Ste 100Los Angeles, CA 90024-7000
Additional reported practice locations
1245 16Th St Ste 105Santa Monica, CA 904041239
Phone: 3103016800
Fax: 3107949035 13630 Van Nuys Blvd Ste 107
Pacoima, CA 913313668
Phone: 7477776099
Fax: 7472273076
Education & affiliations
- Medical / professional school
- Not reported in this file
- Graduation year
- 1992
- CMS specialties
- Diagnostic Radiology · Internal Medicine
Practice groups
- Clinica Medica Pacoima
- Martin Luther King Jr Community Medical Foundation
- Ucla Radiology Medical Group
Reported hospital affiliations
- Martin Luther King, Jr. Community Hospital Los Angeles, CA
- Ronald Reagan Ucla Medical Center Los Angeles, CA
- Santa Monica - Ucla Med Ctr & Orthopaedic Hospital Santa Monica, CA
- Ucla West Valley Medical Center West Hills, CA
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 |
|---|---|
| Travel and lodging | $947.37 |
| Food and beverage | $561.68 |
Reporting companies
| Company | Amount |
|---|---|
| HEARTFLOW, INC. | $1,509.05 |
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
- Internal Medicine
- Taxonomy code
- 207R00000X
- Enumeration date
- Jun 16, 2006
- Record updated
- Mar 24, 2025
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
2085R0202X
License reported: A97859 CA
2085R0204X
License reported: A97859 CA
207R00000X · Primary
License reported: A97859 CA
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
100 Ucla Medical Plz Ste 100Los Angeles, CA 90024-7000
- Phone
- (310) 301-6800
- Fax
- (310) 794-9035
Mailing address
5767 W CENTURY BLVD STE 400LOS ANGELES, CA 900455631
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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