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Dr. Alexander J. Chien, MD
NPI1255313318PAC ID3870537830
- Medicare services, 2024
- 190
- Medicare patients, 2024
- 303
- Publications
- 7
- MIPS score, 2024
- 89
- Hospital affiliations
- 1
- Practice address
- 350 Terracina Blvd, Redlands, CA 92373
- Practice phone
- Call (909) 335-5500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chien'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. Alexander J. Chien is a diagnostic radiologist in Redlands, California
Dr. Chien practices at Redlands Community Hospital in Redlands, California, part of Redlands Community Hospital.
Dr. Chien's NPI, 1255313318, was assigned on November 15, 2005. Dr. Chien graduated from University of Michigan Medical School in 1997. Dr. Chien holds California license A82949.
NPI and contact details
- NPI
- 1255313318NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3870537830
- NPI enumeration date
- November 15, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 335-5500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexander J. Chien practices at Redlands Community Hospital in Redlands, California
Dr. Chien's primary practice is Redlands Community Hospital, at 350 Terracina Blvd, Redlands, CA 92373 in San Bernardino County. The practice phone is (909) 335-5500.
- Redlands Community Hospital350 Terracina Blvd, Redlands, CA 92373 · San Bernardino CountyPhone(909) 335-5500
Source: Dmand AI Affiliation Data
Dr. Alexander J. Chien is affiliated with 2 sites of care and 3 medical groups
Dr. Chien's primary practice is Redlands Community Hospital in Redlands, California, part of Redlands Community Hospital. The medical group on file is Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI also links Dr. Chien to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Loma Linda University Faculty Medical Group (LLUFMG)2 medical groupsNames with a free account1 group practice or clinicName with a free account
See all 5 affiliations for Dr. ChienSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Alexander J. Chien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chien practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Redlands Community Hospital | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexander J. Chien is one of 4,096 diagnostic radiologists in California
Diagnostic radiology is Dr. Chien's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Chien is licensed in California.
Specialties and state licenses
- Diagnostic radiology, CaliforniaPrimary
Diagnostic radiologists near Dr. Chien
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
4,096diagnostic radiologists in California15diagnostic radiologists in Redlands7diagnostic radiologists at Redlands Community Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Alexander J. Chien billed Medicare for 190 services in 2024
CMS data shows 190 Medicare services from Dr. Chien across 9 procedure codes in 2024, for 303 Medicare patients. Medicare paid $9,102 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024190
Medicare patients303
Paid by Medicare$9,102
Procedure codes9
Dr. Chien's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,4462024: 19087%
Dr. Chien compared with the California median for diagnostic radiologists, 2024
- Dr. Chien
- California median
- Medicare services
- 190vs 2,28192% below
- Medicare patients
- 303vs 1,34677% below
Medians across 3,734 diagnostic radiologists in California with Dmand AI profiles that report each measure.
Dr. Chien'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexander J. Chien treated 303 Medicare patients in 2024, average age 75
CMS counts 303 Medicare patients who saw Dr. Chien in 2024. The largest group is 75 to 84, with 125 patients. 73% of them have high blood pressure, and 69% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.59, 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. Chien's median patient age at 64, with 60% women.
Medicare patients, 2024303
Average age75
Average risk score1.59
Also on Medicaid18%
Dr. Chien's Medicare patients by age, 2024
Dr. Chien's Medicare patients by sex, 2024
- Women19263%
- Men11137%
Chronic conditions among Dr. Chien's Medicare patients, 2024
- High blood pressure73%
- High cholesterol69%
- Arthritis61%
- Diabetes30%
- Chronic kidney disease29%
- Cancer25%
- COPD23%
- Heart failure21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexander J. Chien scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Chien for performance year 2024, reported as part of a group. Dr. Chien accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chien's MIPS scores, performance year 2024
- 89of 100Final score
- 72.1of 100Quality
- 80of 100Promoting Interoperability
- 40of 100Improvement Activities
- 77of 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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Dr. Alexander J. Chien has 7 publications on record
Dmand AI links 7 papers to Dr. Chien, published from 2012 to 2017. 2012 was the busiest year, with 2. The most frequent topics are Dyneins. Dr. Chien's most frequent co-authors are Peter Elsissy, MD and Bhavana Rao, MD.
Papers7
Years published2012 to 2017
Dr. Chien's papers by year, 2012 to 2017
Topics Dr. Chien writes about most
- Dyneins
Dr. Chien's most frequent co-authors
Recent publications by Dr. Chien
Nat Commun
Biological TransportDimerizationDyneins
Atherosclerosis
Cell AdhesionCell CountCell Movement
See who Dr. Chien researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chien 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
Dr. Alexander J. Chien received $278 in industry payments from 2018 to 2019
CMS Open Payments shows 2 general payments to Dr. Chien from 2 drug and device companies from 2018 to 2019. Food and beverage make up the largest share, 100% of the total. Medtronic USA, Inc. paid the most, $165.
General payments to Dr. Chien by program year, 2018 to 2019
Companies that paid Dr. Chien the most, 2018 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alexander J. Chien graduated from University of Michigan Medical School
Dr. Chien graduated from University of Michigan Medical School in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Alexander J. Chien'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 |
| 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. Alexander J. Chien
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. Alexander J. Chien's NPI number?
Dr. Alexander J. Chien's NPI number is 1255313318. It was assigned on November 15, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander J. Chien?
Dr. Alexander J. Chien is a diagnostic radiologist in Redlands, California. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Alexander J. Chien practice?
Dr. Chien practices at 350 Terracina Blvd, Redlands, CA 92373. Dr. Chien's primary practice is Redlands Community Hospital in Redlands, California, part of Redlands Community Hospital. Dmand AI also links Dr. Chien to 2 medical groups and 1 group practice or clinic.
What is Dr. Alexander J. Chien's office phone number?
The practice phone on file for Dr. Chien is (909) 335-5500.
What is Dr. Alexander J. Chien's medical license number?
Dr. Chien holds California license A82949.
Which hospitals is Dr. Alexander J. Chien affiliated with?
Dr. Chien practices at Redlands Community Hospital in Redlands, California.
What medical group is Dr. Alexander J. Chien part of?
Dr. Chien is linked to Loma Linda University Faculty Medical Group (LLUFMG). Dmand AI links Dr. Chien to 2 more medical groups.
Does Dr. Alexander J. Chien accept Medicare?
Yes. CMS data shows Dr. Chien billed Medicare for 190 services in 2024, and Dr. Chien accepts Medicare assignment.
What is Dr. Alexander J. Chien's MIPS score?
Dr. Chien's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
How many Medicare patients does Dr. Alexander J. Chien see?
CMS counts 303 Medicare patients who saw Dr. Chien in 2024, with an average age of 75.
Show 6 more questionsShow fewer questions
What services does Dr. Alexander J. Chien bill to Medicare?
In 2024, Dr. Chien's most billed Medicare services were diagnostic imaging (71260), diagnostic imaging (74177) and diagnostic imaging (71250).
Where did Dr. Alexander J. Chien go to medical school?
Dr. Chien graduated from University of Michigan Medical School in 1997.
Has Dr. Alexander J. Chien received payments from drug or device companies?
CMS Open Payments shows $278 in general payments to Dr. Chien from 2 companies from 2018 to 2019. The largest total came from Medtronic USA, Inc.
How long has Dr. Alexander J. Chien been practicing?
Dr. Chien graduated from medical school in 1997, 29 years ago.
Does Dr. Alexander J. Chien do research?
Dmand AI links 7 publications to Dr. Chien, published from 2012 to 2017.
Who does Dr. Alexander J. Chien publish with?
Dr. Chien's most frequent co-authors are Peter Elsissy, MD (1 shared paper) and Bhavana Rao, MD (1 shared paper).
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