Dr. Samuel Lowry Maxwell Jr., MD
- Medicare services, 2024
- 1,336
- Medicare patients, 2024
- 1,219
- MIPS score, 2024
- 81
- Hospital affiliations
- 2
- Industry payments
- $38
- Practice address
- 101 E. Valencia Mesa Drive, Fullerton, CA 92835
- Practice phone
- Call (714) 578-8706
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
St. Jude Medical Center - Unit
Acute Care Hospital-Unit · Fullerton, California
Find Dr. Maxwell's professional email, personal email and mobile number
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Dr. Samuel Lowry Maxwell Jr. is a diagnostic radiologist in Fullerton, California
Dr. Maxwell practices at St. Jude Medical Center - Unit in Fullerton, California.
Dr. Maxwell's NPI, 1386740900, was assigned on September 15, 2006. Dr. Maxwell graduated from Harvard Medical School in 1973. Dr. Maxwell holds California license G58197.
- NPI
- 1386740900NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486540846
- NPI enumeration date
- September 15, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (714) 578-8706
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Samuel Lowry Maxwell Jr. practices at St. Jude Medical Center - Unit in Fullerton, California
Dr. Maxwell's primary practice is St. Jude Medical Center - Unit, at 101 E. Valencia Mesa Drive, Fullerton, CA 92835 in Orange County. The practice phone is (714) 578-8706.
- St. Jude Medical Center - Unit101 E. Valencia Mesa Drive, Fullerton, CA 92835 · Orange CountyPhone(714) 578-8706
Source: Dmand AI Affiliation Data
Dr. Samuel Lowry Maxwell Jr. is affiliated with 2 sites of care and 1 medical group
Dr. Maxwell's primary practice is St. Jude Medical Center - Unit in Fullerton, California. Dr. Maxwell is also affiliated with Providence St. Jude Medical Center. The medical group on file is St. Jude Radiology Medical Group, Inc.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Samuel Lowry Maxwell Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maxwell practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Jude Medical Center - Unit | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Samuel Lowry Maxwell Jr. is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Maxwell's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Maxwell is board certified in diagnostic radiology by the American Board of Radiology. Dr. Maxwell is licensed in California.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
Diagnostic radiologists near Dr. Maxwell
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
Dr. Samuel Lowry Maxwell Jr. billed Medicare for 1,336 services in 2024
CMS data shows 1,336 Medicare services from Dr. Maxwell across 23 procedure codes in 2024, for 1,219 Medicare patients. Medicare paid $20,777 for them.
Dr. Maxwell's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,6902024: 1,27824%
- Other services
- 2023: 652024: 3349%
- Tests and treatments
- 2023: 282024: 2511%
Where Dr. Maxwell's Medicare services took place, 2024
- In an office28521%
- In a facility1,05179%
Dr. Maxwell compared with the California median for diagnostic radiologists, 2024
- Dr. Maxwell
- California median
- Medicare services
- 1,336vs 2,28141% below
- Medicare patients
- 1,219vs 1,3469% below
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. Maxwell'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 Dr. Maxwell and other diagnostic radiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Samuel Lowry Maxwell Jr. treated 1,219 Medicare patients in 2024, average age 77
CMS counts 1,219 Medicare patients who saw Dr. Maxwell in 2024. The largest group is 65 to 74, with 445 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 24% are also on Medicaid. Their average risk score is 1.92, 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. Maxwell's median patient age at 66, with 64% women.
Dr. Maxwell's Medicare patients by age, 2024
Dr. Maxwell's Medicare patients by sex, 2024
- Women72860%
- Men49140%
Chronic conditions among Dr. Maxwell's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Diabetes41%
- Chronic kidney disease36%
- Ischemic heart disease34%
- Mood disorders31%
- Heart failure30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Maxwell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women64%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Samuel Lowry Maxwell Jr. scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Maxwell for performance year 2024, reported as part of a group. Dr. Maxwell accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Maxwell's MIPS scores, performance year 2024
- 81of 100Final score
- 75.7of 100Quality
- 40of 100Improvement Activities
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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Dr. Samuel Lowry Maxwell Jr. received $38 in industry payments in 2018
CMS Open Payments shows 2 general payments to Dr. Maxwell from 2 drug and device companies in 2018. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $20.
Companies that paid Dr. Maxwell the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Samuel Lowry Maxwell Jr. graduated from Harvard Medical School
Dr. Maxwell graduated from Harvard Medical School in 1973.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. Samuel Lowry Maxwell Jr. accepts plans from 3 insurance carriers
Dr. Maxwell is in network with 3 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
- CMS Medicare
Plan types Dr. Maxwell accepts, by number of carriers
- Medicare2
- EPO1
- HMO1
- POS1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Samuel Lowry Maxwell Jr.'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) |
| 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) |
| 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. Samuel Lowry Maxwell Jr.
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. Samuel Lowry Maxwell Jr.'s NPI number?
Dr. Samuel Lowry Maxwell Jr.'s NPI number is 1386740900. It was assigned on September 15, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Samuel Lowry Maxwell Jr.?
Dr. Samuel Lowry Maxwell Jr. is a diagnostic radiologist in Fullerton, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Samuel Lowry Maxwell Jr. practice?
Dr. Maxwell practices at 101 E. Valencia Mesa Drive, Fullerton, CA 92835. Dr. Maxwell's primary practice is St. Jude Medical Center - Unit in Fullerton, California.
What is Dr. Samuel Lowry Maxwell Jr.'s office phone number?
The practice phone on file for Dr. Maxwell is (714) 578-8706.
What is Dr. Samuel Lowry Maxwell Jr.'s medical license number?
Dr. Maxwell holds California license G58197.
Which hospitals is Dr. Samuel Lowry Maxwell Jr. affiliated with?
Dr. Maxwell is affiliated with Providence St. Jude Medical Center. Dmand AI links Dr. Maxwell to 1 more hospital.
What medical group is Dr. Samuel Lowry Maxwell Jr. part of?
Dr. Maxwell is linked to St. Jude Radiology Medical Group, Inc.
Does Dr. Samuel Lowry Maxwell Jr. accept Medicare?
Yes. CMS data shows Dr. Maxwell billed Medicare for 1,336 services in 2024, and Dr. Maxwell accepts Medicare assignment.
What is Dr. Samuel Lowry Maxwell Jr.'s MIPS score?
Dr. Maxwell's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Dr. Samuel Lowry Maxwell Jr. see?
CMS counts 1,219 Medicare patients who saw Dr. Maxwell in 2024, with an average age of 77.
Show 6 more questionsShow fewer questions
Is Dr. Samuel Lowry Maxwell Jr. board certified?
Yes. Dr. Maxwell is board certified in diagnostic radiology by the American Board of Radiology.
What services does Dr. Samuel Lowry Maxwell Jr. bill to Medicare?
In 2024, Dr. Maxwell's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (71046) and radiation oncology (77063).
Where did Dr. Samuel Lowry Maxwell Jr. go to medical school?
Dr. Maxwell graduated from Harvard Medical School in 1973.
Has Dr. Samuel Lowry Maxwell Jr. received payments from drug or device companies?
CMS Open Payments shows $38 in general payments to Dr. Maxwell from 2 companies from 2018 to 2018. The largest total came from Amgen Inc.
How long has Dr. Samuel Lowry Maxwell Jr. been practicing?
Dr. Maxwell graduated from medical school in 1973, 53 years ago.
What insurance does Dr. Samuel Lowry Maxwell Jr. accept?
Dr. Maxwell is in network with 3 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and CMS Medicare. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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