Ann Intern Med
Blood PressureCardiac OutputHeart Failure
Dr. Stephen B. Arnold, MD
NPI1023021680
- Medicare services, 2022
- 161
- Part D claims, 2024
- 916
- Publications
- 5
- Hospital affiliations
- 1
- Industry payments
- $6,291
- Practice address
- 2500 Alhambra Avenue, Martinez, CA 94553
- Practice phone
- Call (925) 370-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Arnold's professional email, personal email and mobile number
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Dr. Stephen B. Arnold is a cardiologist in Martinez, California
Dr. Arnold practices at Contra Costa Regional Medical Center in Martinez, California, part of State of California.
Dr. Arnold's NPI, 1023021680, was assigned on August 14, 2006. Dr. Arnold graduated from Yale School of Medicine in 1974. Dr. Arnold holds California license G30250.
NPI and contact details
- NPI
- 1023021680NPI Registry (opens in a new tab)
- NPI enumeration date
- August 14, 2006
- NPI status
- Active
- Practice phone
- (925) 370-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 78
- Medical school graduation
- 1974
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Stephen B. Arnold practices at Contra Costa Regional Medical Center in Martinez, California
Dr. Arnold's primary practice is Contra Costa Regional Medical Center, at 2500 Alhambra Avenue, Martinez, CA 94553 in Contra Costa County. The practice phone is (925) 370-5000.
- Contra Costa Regional Medical Center2500 Alhambra Avenue, Martinez, CA 94553 · Contra Costa CountyPhone(925) 370-5000
Source: Dmand AI Affiliation Data
Dr. Stephen B. Arnold is affiliated with 3 sites of care and 3 medical groups
Dr. Arnold's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California. The medical group on file is John Muir Medical Group. Dmand AI also links Dr. Arnold to 2 more group practices and clinics and 2 medical groups, each named with a free account. Dr. Arnold's employer is on file too: a hospital.
John Muir Medical Group2 group practices and clinicsNames with a free account2 medical groupsNames with a free accountEmployer: hospitalName with a free account
See all 6 affiliations for Dr. ArnoldSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Stephen B. Arnold's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Arnold practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Contra Costa Regional Medical Center | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen B. Arnold is one of 2,375 cardiologists in California
Cardiovascular disease is Dr. Arnold's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Arnold is board certified in cardiovascular disease by the American Board of Internal Medicine. Dr. Arnold is licensed in California.
Specialties and state licenses
- Cardiovascular disease, CaliforniaPrimary
Cardiologists near Dr. Arnold
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
2,375cardiologists in California
5cardiologists in Martinez
2cardiologists at Contra Costa Regional Medical CenterSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Stephen B. Arnold billed Medicare for 161 services in 2022
CMS data shows 161 Medicare services from Dr. Arnold across 3 procedure codes in 2022. Medicare paid $11,333 for them. Every service was in an office.
Medicare services, 2022161
Paid by Medicare$11,333
Procedure codes3
Dr. Arnold's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 4232022: 9079%
- Tests and treatments
- 2021: 1882022: 7162%
Dr. Arnold compared with the California median for cardiologists, 2022
- Dr. Arnold
- California median
- Medicare services
- 161vs 1,56090% below
- Part D claims
- 745vs 1,41047% below
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Dr. Arnold's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Arnold and other cardiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen B. Arnold's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Arnold's median patient age at 71, with 51% women.
Dr. Arnold's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women51%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Stephen B. Arnold wrote 916 Medicare Part D claims in 2024
In 2024, Dr. Arnold wrote 916 Medicare Part D claims for 168 patients. 78% of them were for generic drugs. CMS names the drug for 745 of them, across 26 drugs with 11 or more claims each, at $167,841 in total drug cost. In 2023, CMS named 850 claims across 30 drugs.
Part D claims, 2024916
Drugs named by CMS26
Total drug cost$167,841
Part D patients168
Dr. Arnold's Part D claims by kind of drug, 2024
- Generic715 claims78%
- Brand-name201 claims22%
Dr. Arnold's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 8502024: 74512%
Drugs named by CMS: 26 in 2024, 30 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Stephen B. Arnold has 5 publications on record
Dmand AI links 5 papers to Dr. Arnold. The most frequent topics are Heart Failure, Hemodynamics and Prazosin. Dr. Arnold's most frequent co-authors are James D. Bristow, M, D and Nelson B. Schiller, MD.
Papers5
Topics Dr. Arnold writes about most
- Heart Failure
- Hemodynamics
- Prazosin
- Quinazolines
- Cardiac Output
- Stroke Volume
- Vascular Resistance
Dr. Arnold's most frequent co-authors
- James D. Bristow, M, D1 shared paper
- Nelson B. Schiller, MD1 shared paper
Recent publications by Dr. Arnold
Cardiac OutputHeart FailureHemodynamics
AortaCardiomegalyDiastole
Long-term digitalis therapy improves left ventricular function in heart failure (opens in a new tab)
N Engl J Med
Administration, OralDigoxinHeart Failure
Eur J Clin Pharmacol
Heart FailureKidney DiseasesKinetics
See who Dr. Arnold researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Arnold works with, so you can find a warm path to the right cardiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Stephen B. Arnold received $6,291 in industry payments from 2016 to 2025
CMS Open Payments shows 290 general payments to Dr. Arnold from 31 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Janssen Pharmaceuticals, Inc paid the most, $858.
General payments to Dr. Arnold by program year, 2016 to 2025
General payments to Dr. Arnold by kind, 2016 to 2025
$6.3Kin total
- Food and beverage$5,96895%
- Education$3235%
Companies that paid Dr. Arnold 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. Stephen B. Arnold has 4 awards and honors on record
Dmand AI lists 4 awards for Dr. Arnold, most recently Regional Top Doctor in 2014.
Awards and honors for Dr. Arnold
- 2014
- Regional Top Doctor
- 2011
- CMS Stage 1 2012
- Undated
- ACC Fellow
- Checkbook Top Doc
Source: Dmand AI Professional Profile Data
Dr. Stephen B. Arnold graduated from Yale School of Medicine
Dr. Arnold graduated from Yale School of Medicine in 1974. Dr. Arnold is a member of ACC.
- Medical school
- Board certified in cardiovascular disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Stephen B. Arnold accepts plans from 5 insurance carriers
Dr. Arnold is in network with 5 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
Plan types Dr. Arnold accepts, by number of carriers
- Medicare5
- PPO5
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Stephen B. Arnold'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 DataDmand AI Org Hierarchy 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 Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Stephen B. Arnold
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. Stephen B. Arnold's NPI number?
Dr. Stephen B. Arnold's NPI number is 1023021680. It was assigned on August 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen B. Arnold?
Dr. Stephen B. Arnold is a cardiologist in Martinez, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Stephen B. Arnold practice?
Dr. Arnold practices at 2500 Alhambra Avenue, Martinez, CA 94553. Dr. Arnold's primary practice is Contra Costa Regional Medical Center in Martinez, California, part of State of California. Dmand AI also links Dr. Arnold to 2 group practices and clinics and 2 medical groups.
What is Dr. Stephen B. Arnold's office phone number?
The practice phone on file for Dr. Arnold is (925) 370-5000.
What is Dr. Stephen B. Arnold's medical license number?
Dr. Arnold holds California license G30250.
Which hospitals is Dr. Stephen B. Arnold affiliated with?
Dr. Arnold practices at Contra Costa Regional Medical Center in Martinez, California.
What medical group is Dr. Stephen B. Arnold part of?
Dr. Arnold is linked to John Muir Medical Group. Dmand AI links Dr. Arnold to 2 more medical groups.
Does Dr. Stephen B. Arnold accept Medicare?
Yes. CMS data shows Dr. Arnold billed Medicare for 161 services in 2022.
Is Dr. Stephen B. Arnold board certified?
Yes. Dr. Arnold is board certified in cardiovascular disease by the American Board of Internal Medicine.
What services does Dr. Stephen B. Arnold bill to Medicare?
In 2022, Dr. Arnold's most billed Medicare services were heart test or procedure (93000), office visit, established patient (99214) and office visit, new patient (99204).
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Where did Dr. Stephen B. Arnold go to medical school?
Dr. Arnold graduated from Yale School of Medicine in 1974.
What drugs does Dr. Stephen B. Arnold prescribe most?
In 2024 Medicare Part D data, Dr. Arnold's most prescribed drugs by claims were Metoprolol Succinate, Furosemide and Atorvastatin Calcium.
Has Dr. Stephen B. Arnold received payments from drug or device companies?
CMS Open Payments shows $6,291 in general payments to Dr. Arnold from 31 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Stephen B. Arnold been practicing?
Dr. Arnold graduated from medical school in 1974, 52 years ago.
Does Dr. Stephen B. Arnold do research?
Dmand AI links 5 publications to Dr. Arnold.
Who does Dr. Stephen B. Arnold publish with?
Dr. Arnold's most frequent co-authors are James D. Bristow, M, D (1 shared paper) and Nelson B. Schiller, MD (1 shared paper).
What insurance does Dr. Stephen B. Arnold accept?
Dr. Arnold is in network with 5 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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