Cardiac Magnetic Resonance Imaging for Detecting Endothelial Dysfunction (opens in a new tab)
Status unknown
Diabetes MellitusGlucose Metabolism Disorders
Dr. Stefan G. Ruehm, MD
NPI1669416632PAC ID6901850411
- Medicare services, 2024
- 50,003
- Medicare patients, 2024
- 1,691
- Part D claims, 2024
- 32
- Publications
- 2
- Clinical trials
- 1
- Practice address
- 27235 Tourney Rd, Santa Clarita, CA 91355
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Santa Clarita Radiation Oncology - Radiation Oncology - HOPD
Acute Care Hospital outpatient department · Santa Clarita, California
Find Dr. Ruehm's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Stefan G. Ruehm is an interventional radiologist in Valencia, California
Dr. Ruehm practices at Santa Clarita Radiation Oncology - Radiation Oncology - HOPD in Santa Clarita, California.
Dr. Ruehm's NPI, 1669416632, was assigned on June 16, 2006. Dr. Ruehm graduated from Johannes Gutenberg University of Mainz Faculty of Medicine in 1992. Dr. Ruehm holds California license A97859.
NPI and contact details
- NPI
- 1669416632NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6901850411
- NPI enumeration date
- June 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stefan G. Ruehm practices at Santa Clarita Radiation Oncology - Radiation Oncology - HOPD in Santa Clarita, California
Dr. Ruehm's primary practice is Santa Clarita Radiation Oncology - Radiation Oncology - HOPD, at 27235 Tourney Rd, Santa Clarita, CA 91355.
- Santa Clarita Radiation Oncology - Radiation Oncology - HOPD27235 Tourney Rd, Santa Clarita, CA 91355
Source: Dmand AI Affiliation Data
Dr. Stefan G. Ruehm is affiliated with 12 sites of care and 4 medical groups
Dr. Ruehm's primary practice is Santa Clarita Radiation Oncology - Radiation Oncology - HOPD in Santa Clarita, California. Dr. Ruehm is also affiliated with Ronald Reagan UCLA Medical Center. The medical group on file is UCLA Entertainment Industry Medical Group. Dmand AI also links Dr. Ruehm to 3 more hospitals, 4 group practices and clinics, 3 medical groups, 1 physician office, 1 hospice and 1 ambulatory surgery center, each named with a free account.
Santa Clarita Radiation Oncology - Radiation Oncology - HOPDPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Stefan G. Ruehm's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ruehm practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Santa Clarita Radiation Oncology - Radiation Oncology - HOPD | Available with a free account |
| +11 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stefan G. Ruehm is one of 559 interventional radiologists in California
Vascular and interventional radiology is Dr. Ruehm's primary specialty in the NPI Registry, under taxonomy code 2085R0204X. Dr. Ruehm is board certified in diagnostic radiology by the American Board of Radiology. Dr. Ruehm is licensed in California.
Specialties and state licenses
- Vascular and interventional radiology, CaliforniaPrimary
Interventional radiologists near Dr. Ruehm
Counts of interventional radiologists with a Dmand AI profile, by place and practice. Each opens the list.
559interventional radiologists in California
6interventional radiologists in Valencia
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Stefan G. Ruehm billed Medicare for 50,003 services in 2024
CMS data shows 50,003 Medicare services from Dr. Ruehm across 47 procedure codes in 2024, for 1,691 Medicare patients. Medicare paid $583,418 for them.
Medicare services, 202450,003
Medicare patients1,691
Paid by Medicare$583,418
Procedure codes47
Dr. Ruehm's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 52,3002024: 44,53315%
- Office and hospital visits
- 2023: 02024: 1,889
- Imaging
- 2023: 1,2652024: 1,87548%
- Tests and treatments
- 2023: 2312024: 1,600593%
- Surgery
- 2023: 02024: 106
Where Dr. Ruehm's Medicare services took place, 2024
- In an office49,53299%
- In a facility4711%
Dr. Ruehm compared with the California median for interventional radiologists, 2024
- Dr. Ruehm
- California median
- Medicare services
- 50,003vs 83859.7 times
- Medicare patients
- 1,691vs 4343.9 times
Medians across 511 interventional radiologists in California with Dmand AI profiles that report each measure.
Dr. Ruehm's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Ruehm?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ruehm and other interventional radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stefan G. Ruehm treated 1,691 Medicare patients in 2024, average age 70
CMS counts 1,691 Medicare patients who saw Dr. Ruehm in 2024. The largest group is 65 to 74, with 867 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 46% are also on Medicaid. Their average risk score is 2.16, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ruehm's median patient age at 62, with 47% women.
Medicare patients, 20241,691
Average age70
Average risk score2.16
Also on Medicaid46%
Dr. Ruehm's Medicare patients by age, 2024
Dr. Ruehm's Medicare patients by sex, 2024
- Women85250%
- Men83950%
Chronic conditions among Dr. Ruehm's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Diabetes48%
- Ischemic heart disease47%
- Mood disorders43%
- Depression41%
- Anxiety40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ruehm's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women47%
- Men52%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stefan G. Ruehm wrote 32 Medicare Part D claims in 2024
In 2024, Dr. Ruehm wrote 32 Medicare Part D claims for 15 patients. 78% of them were for generic drugs.
Part D claims, 202432
Part D patients15
Dr. Ruehm's Part D claims by kind of drug, 2024
- Generic25 claims78%
- Brand-name and other7 claims22%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Stefan G. Ruehm scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Ruehm for performance year 2024, reported individually. Dr. Ruehm accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Stefan G. Ruehm has 2 publications on record
Dmand AI links 2 papers to Dr. Ruehm.
Papers2
Recent publications by Dr. Ruehm
See who Dr. Ruehm researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ruehm works with, so you can find a warm path to the right interventional radiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Stefan G. Ruehm has worked on 1 clinical trial
Dmand AI links Dr. Ruehm to 1 clinical trial. Conditions studied include Diabetes Mellitus and Glucose Metabolism Disorders.
Conditions in Dr. Ruehm's trials
- Diabetes Mellitus
- Glucose Metabolism Disorders
Investigators on the most trials with Dr. Ruehm
- Christine Hema Darwin, MD1 shared trial
- Jonathan Gerald Goldin, MD1 shared trial
- Mayil Singram Krishnam, MD1 shared trial
Recent clinical trials with Dr. Ruehm
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Stefan G. Ruehm received $4,314 in industry payments from 2016 to 2025
CMS Open Payments shows 24 general payments to Dr. Ruehm from 3 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 43% of the total. HeartFlow, Inc. paid the most, $2,238.
General payments to Dr. Ruehm by program year, 2016 to 2025
General payments to Dr. Ruehm by kind, 2016 to 2025
$4.3Kin total
- Food and beverage$1,86743%
- Honoraria$1,50035%
- Travel and lodging$94722%
Companies that paid Dr. Ruehm the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stefan G. Ruehm graduated from Johannes Gutenberg University of Mainz Faculty of Medicine
Dr. Ruehm graduated from Johannes Gutenberg University of Mainz Faculty of Medicine in 1992.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. Stefan G. Ruehm accepts plans from 11 insurance carriers
Dr. Ruehm is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Elevance
- Regence Health Plans
- +3 more carriersWith a free account
Plan types Dr. Ruehm accepts, by number of carriers
- Medicare7
- PPO7
- HMO6
- POS4
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Stefan G. Ruehm's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Stefan G. Ruehm
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Stefan G. Ruehm's NPI number?
Dr. Stefan G. Ruehm's NPI number is 1669416632. It was assigned on June 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stefan G. Ruehm?
Dr. Stefan G. Ruehm is an interventional radiologist in Valencia, California. The primary specialty in the NPI Registry is Vascular & Interventional Radiology Physician (taxonomy code 2085R0204X).
Where does Dr. Stefan G. Ruehm practice?
Dr. Ruehm practices at 27235 Tourney Rd, Santa Clarita, CA 91355. Dr. Ruehm's primary practice is Santa Clarita Radiation Oncology - Radiation Oncology - HOPD in Santa Clarita, California. Dmand AI also links Dr. Ruehm to 3 hospitals, 4 group practices and clinics, 3 medical groups, 1 physician office, 1 hospice and 1 ambulatory surgery center.
What is Dr. Stefan G. Ruehm's medical license number?
Dr. Ruehm holds California license A97859.
Which hospitals is Dr. Stefan G. Ruehm affiliated with?
Dr. Ruehm is affiliated with Ronald Reagan UCLA Medical Center. Dmand AI links Dr. Ruehm to 3 more hospitals.
What medical group is Dr. Stefan G. Ruehm part of?
Dr. Ruehm is linked to UCLA Entertainment Industry Medical Group. Dmand AI links Dr. Ruehm to 3 more medical groups.
Does Dr. Stefan G. Ruehm accept Medicare?
Yes. CMS data shows Dr. Ruehm billed Medicare for 50,003 services in 2024, and Dr. Ruehm accepts Medicare assignment.
What is Dr. Stefan G. Ruehm's MIPS score?
Dr. Ruehm's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. Stefan G. Ruehm see?
CMS counts 1,691 Medicare patients who saw Dr. Ruehm in 2024, with an average age of 70.
Is Dr. Stefan G. Ruehm board certified?
Yes. Dr. Ruehm is board certified in diagnostic radiology by the American Board of Radiology.
Show 6 more questionsShow fewer questions
What services does Dr. Stefan G. Ruehm bill to Medicare?
In 2024, Dr. Ruehm's most billed Medicare services were medicare temporary code (Q9967), medical supplies or transport (A9585) and medical supplies or transport (A9575).
Where did Dr. Stefan G. Ruehm go to medical school?
Dr. Ruehm graduated from Johannes Gutenberg University of Mainz Faculty of Medicine in 1992.
Has Dr. Stefan G. Ruehm received payments from drug or device companies?
CMS Open Payments shows $4,314 in general payments to Dr. Ruehm from 3 companies from 2016 to 2025. The largest total came from HeartFlow, Inc.
How long has Dr. Stefan G. Ruehm been practicing?
Dr. Ruehm graduated from medical school in 1992, 34 years ago.
Does Dr. Stefan G. Ruehm do research?
Dmand AI links 2 publications to Dr. Ruehm. Dr. Ruehm has worked on 1 clinical trial.
What insurance does Dr. Stefan G. Ruehm accept?
Dr. Ruehm is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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