Dr. James Amster, MD
- Medicare services, 2023
- 10,429
- Part D claims, 2023
- 18
- MIPS score, 2024
- 91
- Industry payments
- $91
- Affiliated sites
- 1
- Practice address
- 2708 E Willow St, Signal Hill, CA 90755-2217
- Practice phone
- Call (562) 216-5120
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Liberty Pacific Medical Imaging
Medical specialty practice · Signal Hill, California
Find Dr. Amster'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. James Amster is a neuroradiologist in Signal Hill, California
Dr. Amster practices at Liberty Pacific Medical Imaging in Signal Hill, California.
Dr. Amster's NPI, 1366491623, was assigned on May 6, 2006. Dr. Amster graduated from University of Rochester Medical Center in 1981. Dr. Amster holds California license G49317.
- NPI
- 1366491623NPI Registry (opens in a new tab)
- NPI enumeration date
- May 6, 2006
- NPI status
- Active
- Practice phone
- (562) 216-5120
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James Amster practices at Liberty Pacific Medical Imaging in Signal Hill, California
Dr. Amster's primary practice is Liberty Pacific Medical Imaging, at 2708 E Willow St, Signal Hill, CA 90755-2217. The practice phone is (562) 216-5120.
- Liberty Pacific Medical Imaging2708 E Willow St, Signal Hill, CA 90755-2217Phone(562) 216-5120
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James Amster is affiliated with 1 site of care and 1 medical group
Dr. Amster's primary practice is Liberty Pacific Medical Imaging in Signal Hill, California. Dmand AI also links Dr. Amster to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. James Amster's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Amster practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Liberty Pacific Medical Imaging | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. James Amster is one of 202 neuroradiologists in California
Neuroradiology is Dr. Amster's primary specialty in the NPI Registry, under taxonomy code 2085N0700X. Dr. Amster is board certified in diagnostic radiology by the American Board of Radiology. Dmand AI has Dr. Amster's licenses on file in 3 states: California, Minnesota and New York.
Specialties and state licenses
- Neuroradiology, CaliforniaPrimary
- Minnesota license
- New York license
Neuroradiologists near Dr. Amster
Counts of neuroradiologists 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. James Amster billed Medicare for 10,429 services in 2023
CMS data shows 10,429 Medicare services from Dr. Amster across 8 procedure codes in 2023. Medicare paid $42,985 for them. Every service was in an office.
Dr. Amster's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Other services
- 2022: 12,0022023: 10,21515%
- Imaging
- 2022: 2832023: 21424%
Dr. Amster compared with the California median for neuroradiologists, 2023
- Dr. Amster
- California median
- Medicare services
- 10,429vs 1,3267.9 times
- Part D claims
- 18vs 176% above
Medians across 174 neuroradiologists in California with Dmand AI profiles that report each measure.
Dr. Amster's most billed Medicare procedure codes, 2023
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. Amster?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Amster and other neuroradiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. James Amster wrote 18 Medicare Part D claims in 2023
In 2023, Dr. Amster wrote 18 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $97 in total drug cost. In 2022, CMS named 17 claims across 1 drug.
Dr. Amster's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 172023: 186%
Drugs named by CMS: 1 in 2023, 1 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. James Amster scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Amster for performance year 2024, reported as part of a group.
Dr. Amster's MIPS scores, performance year 2024
- 91of 100Final score
- 75of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. James Amster received $91 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Amster from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. CSL Behring paid the most, $91.
Companies that paid Dr. Amster the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. James Amster graduated from University of Rochester Medical Center
Dr. Amster graduated from University of Rochester Medical Center in 1981. Dr. Amster is a member of AMA.
- Medical school
- Board certified in diagnostic radiology
Source: Dmand AI Professional Profile Data
Dr. James Amster accepts plans from 1 insurance carrier
Dr. Amster is in network with 1 carrier, including Molina. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Molina
Source: Dmand AI Insurance Network Data
Sources for Dr. James Amster'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | 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. James Amster
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. James Amster's NPI number?
Dr. James Amster's NPI number is 1366491623. It was assigned on May 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. James Amster?
Dr. James Amster is a neuroradiologist in Signal Hill, California. The primary specialty in the NPI Registry is Neuroradiology Physician (taxonomy code 2085N0700X).
Where does Dr. James Amster practice?
Dr. Amster practices at 2708 E Willow St, Signal Hill, CA 90755-2217. Dr. Amster's primary practice is Liberty Pacific Medical Imaging in Signal Hill, California. Dmand AI also links Dr. Amster to 1 medical group.
What is Dr. James Amster's office phone number?
The practice phone on file for Dr. Amster is (562) 216-5120.
What is Dr. James Amster's medical license number?
Dr. Amster holds California license G49317, one of the licenses on file in 3 states.
Which states has Dr. James Amster been licensed in?
Dmand AI has state licenses on file for Dr. Amster in California (1981 to 2026), Minnesota (1989 to 1994) and New York (1984 to 1987).
Does Dr. James Amster accept Medicare?
Yes. CMS data shows Dr. Amster billed Medicare for 10,429 services in 2023.
What is Dr. James Amster's MIPS score?
Dr. Amster's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
Is Dr. James Amster board certified?
Yes. Dr. Amster is board certified in diagnostic radiology by the American Board of Radiology.
What services does Dr. James Amster bill to Medicare?
In 2023, Dr. Amster's most billed Medicare services were medical supplies or transport (A9575), medicare temporary code (Q9967) and diagnostic imaging (70551).
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Where did Dr. James Amster go to medical school?
Dr. Amster graduated from University of Rochester Medical Center in 1981.
What drugs does Dr. James Amster prescribe most?
In 2023 Medicare Part D data, Dr. Amster's most prescribed drugs by claims were Gabapentin.
Has Dr. James Amster received payments from drug or device companies?
CMS Open Payments shows $91 in general payments to Dr. Amster from 1 company from 2023 to 2023. The largest total came from CSL Behring.
How long has Dr. James Amster been practicing?
Dr. Amster graduated from medical school in 1981, 45 years ago.
What insurance does Dr. James Amster accept?
Dr. Amster is in network with 1 carrier, including Molina. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
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