James Stewart Chalfant
- Medicare services, 2024
- 3,867
- Medicare patients, 2024
- 964
- Publications
- 4
- MIPS score, 2024
- 88
- Hospital affiliations
- 2
- Practice address
- 1260 15th Street, Suite 1401, Santa Monica, CA 90404
- Practice phone
- Call (310) 434-2495
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cosmetic Surgery Center of Santa Monica
Surgery Center - Medicare-Certified · Santa Monica, California
Find James Chalfant'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.
James Stewart Chalfant is a diagnostic radiologist in Santa Monica, California
James Chalfant practices at Cosmetic Surgery Center of Santa Monica in Santa Monica, California.
James Chalfant's NPI, 1447679105, was assigned on April 9, 2014. James Chalfant graduated from Keck School of Medicine of USC in 2014. James Chalfant's California license number on file is A139886.
- NPI
- 1447679105NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800136094
- NPI enumeration date
- April 9, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 434-2495
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
James Stewart Chalfant practices at Cosmetic Surgery Center of Santa Monica in Santa Monica, California
James Chalfant's primary practice is Cosmetic Surgery Center of Santa Monica, at 1260 15th Street, Suite 1401, Santa Monica, CA 90404. The practice phone is (310) 434-2495.
- Cosmetic Surgery Center of Santa Monica1260 15th Street, Suite 1401, Santa Monica, CA 90404Phone(310) 434-2495
Source: Dmand AI Affiliation Data
James Stewart Chalfant is affiliated with 4 sites of care and 4 medical groups
James Chalfant's primary practice is Cosmetic Surgery Center of Santa Monica in Santa Monica, California. James Chalfant is also affiliated with Ronald Reagan UCLA Medical Center. The medical group on file is Harbor-UCLA Medical Center. Dmand AI also links James Chalfant to 1 more hospital, 3 medical groups and 1 dialysis center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at James Stewart Chalfant's practice
Dmand AI tracks the electronic health record (EHR) system at each site where James Chalfant practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cosmetic Surgery Center of Santa Monica | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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James Stewart Chalfant is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is James Chalfant's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. James Chalfant is board certified in diagnostic radiology by the American Board of Radiology. James Chalfant has a license on file in California.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
Diagnostic radiologists near James Chalfant
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
James Stewart Chalfant billed Medicare for 3,867 services in 2024
CMS data shows 3,867 Medicare services from James Chalfant across 11 procedure codes in 2024, for 964 Medicare patients. Medicare paid $159,257 for them.
James Chalfant's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 2,6582024: 2,03324%
- Imaging
- 2023: 1,5052024: 1,79920%
- Surgery
- 2023: 292024: 3521%
Where James Chalfant's Medicare services took place, 2024
- In an office3,21683%
- In a facility65117%
James Chalfant compared with the California median for diagnostic radiologists, 2024
- James Chalfant
- California median
- Medicare services
- 3,867vs 2,28170% above
- Medicare patients
- 964vs 1,34628% below
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
James Chalfant'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for James Chalfant and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
James Stewart Chalfant treated 964 Medicare patients in 2024, average age 73
CMS counts 964 Medicare patients who saw James Chalfant in 2024. The largest group is 65 to 74, with 534 patients. 75% of them have high cholesterol, and 59% have high blood pressure. 15% are also on Medicaid. Their average risk score is 0.98, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts James Chalfant's median patient age at 53, with 98% women.
James Chalfant's Medicare patients by age, 2024
James Chalfant's Medicare patients by sex, 2024
- Women95099%
- Men141%
Chronic conditions among James Chalfant's Medicare patients, 2024
- High cholesterol75%
- High blood pressure59%
- Arthritis51%
- Osteoporosis35%
- Cancer24%
- Mood disorders24%
- Diabetes23%
- Anxiety21%
Share of Medicare patients with each condition. A patient can have several.
James Chalfant's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women98%
- Men1%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
James Stewart Chalfant scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for James Chalfant for performance year 2024, reported as part of a group. James Chalfant accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
James Chalfant's MIPS scores, performance year 2024
- 88of 100Final score
- 87.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
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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James Stewart Chalfant has 4 publications on record
Dmand AI links 4 papers to James Chalfant, published from 2012 to 2020. James Chalfant's most frequent co-authors are Ethan Oren Cohen, MD, Lars J. Grimm and Anne Christine Hoyt, MD.
James Chalfant's papers by year, 2012 to 2020
James Chalfant's most frequent co-authors
- Ethan Oren Cohen, MD2 shared papers
- Lars J. Grimm2 shared papers
- Anne Christine Hoyt, MD2 shared papers
Recent publications by James Chalfant
See who James Chalfant researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who James Chalfant works with, so you can find a warm path to the right diagnostic radiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
James Stewart Chalfant received $30 in industry payments in 2024
CMS Open Payments shows 1 general payment to James Chalfant from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $30.
Companies that paid James Chalfant the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
James Stewart Chalfant graduated from Keck School of Medicine of USC
James Chalfant graduated from Keck School of Medicine of USC in 2014.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
James Stewart Chalfant accepts plans from 5 insurance carriers
James Chalfant is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Blue Cross and Blue Shield of Kansas City. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
- HCSC
Plan types James Chalfant accepts, by number of carriers
- HMO2
- POS2
- PPO2
- EPO1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for James Stewart Chalfant'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 DataMedicare Physician & Other Practitioners - 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 |
| 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 James Stewart Chalfant
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is James Stewart Chalfant's NPI number?
James Stewart Chalfant's NPI number is 1447679105. It was assigned on April 9, 2014, and it is active in the NPI Registry.
What does James Stewart Chalfant specialize in?
James Stewart Chalfant is a diagnostic radiologist in Santa Monica, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does James Stewart Chalfant practice?
James Chalfant practices at 1260 15th Street, Suite 1401, Santa Monica, CA 90404. James Chalfant's primary practice is Cosmetic Surgery Center of Santa Monica in Santa Monica, California. Dmand AI also links James Chalfant to 1 hospital, 3 medical groups and 1 dialysis center.
What is James Stewart Chalfant's office phone number?
The practice phone on file for James Chalfant is (310) 434-2495.
What is James Stewart Chalfant's medical license number?
James Chalfant's California license number on file is A139886.
Which hospitals is James Stewart Chalfant affiliated with?
James Chalfant is affiliated with Ronald Reagan UCLA Medical Center. Dmand AI links James Chalfant to 1 more hospital.
What medical group is James Stewart Chalfant part of?
James Chalfant is linked to Harbor-UCLA Medical Center. Dmand AI links James Chalfant to 3 more medical groups.
Does James Stewart Chalfant accept Medicare?
Yes. CMS data shows James Chalfant billed Medicare for 3,867 services in 2024, and James Chalfant accepts Medicare assignment.
What is James Stewart Chalfant's MIPS score?
James Chalfant's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
How many Medicare patients does James Stewart Chalfant see?
CMS counts 964 Medicare patients who saw James Chalfant in 2024, with an average age of 73.
Show 8 more questionsShow fewer questions
Is James Stewart Chalfant board certified?
Yes. James Chalfant is board certified in diagnostic radiology by the American Board of Radiology.
What services does James Stewart Chalfant bill to Medicare?
In 2024, James Chalfant's most billed Medicare services were medical supplies or transport (A9585), radiation oncology (77067) and radiation oncology (77063).
Where did James Stewart Chalfant go to medical school?
James Chalfant graduated from Keck School of Medicine of USC in 2014.
Has James Stewart Chalfant received payments from drug or device companies?
CMS Open Payments shows $30 in general payments to James Chalfant from 1 company from 2024 to 2024. The largest total came from Boston Scientific Corporation.
How long has James Stewart Chalfant been practicing?
James Chalfant graduated from medical school in 2014, 12 years ago.
Does James Stewart Chalfant do research?
Dmand AI links 4 publications to James Chalfant, published from 2012 to 2020.
Who does James Stewart Chalfant publish with?
James Chalfant's most frequent co-authors are Ethan Oren Cohen, MD (2 shared papers), Lars J. Grimm (2 shared papers) and Anne Christine Hoyt, MD (2 shared papers).
What insurance does James Stewart Chalfant accept?
James Chalfant is in network with 5 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Blue Cross and Blue Shield of Kansas City. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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