Analgesics, OpioidAnesthetics, LocalArthroplasty, Replacement, Knee
Dr. Chang-Hwa Mary Chen, MD
NPI1245287622PAC ID9638174790
- Medicare services, 2024
- 180
- Medicare patients, 2024
- 243
- Publications
- 3
- Hospital affiliations
- 1
- Industry payments
- $94,622
- Practice address
- 2121 Santa Monica Blvd, Santa Monica, CA 90404
- Practice phone
- Call (310) 829-5511
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chen'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. Chang-Hwa Mary Chen is an anesthesiologist in Santa Monica, California
Dr. Chen practices at Providence Saint John's Health Center in Santa Monica, California, part of Providence Health & Services.
Dr. Chen's NPI, 1245287622, was assigned on May 30, 2006. Dr. Chen graduated from Keck School of Medicine of USC in 2002. Dr. Chen holds California license A85504.
NPI and contact details
- NPI
- 1245287622NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638174790
- NPI enumeration date
- May 30, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (310) 829-5511
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Chang-Hwa Mary Chen practices at Providence Saint John's Health Center in Santa Monica, California
Dr. Chen's primary practice is Providence Saint John's Health Center, at 2121 Santa Monica Blvd, Santa Monica, CA 90404 in Los Angeles County. The practice phone is (310) 829-5511.
- Providence Saint John's Health Center2121 Santa Monica Blvd, Santa Monica, CA 90404 · Los Angeles CountyPhone(310) 829-5511
Source: Dmand AI Affiliation Data
Dr. Chang-Hwa Mary Chen is affiliated with 2 sites of care and 4 medical groups
Dr. Chen's primary practice is Providence Saint John's Health Center in Santa Monica, California, part of Providence Health & Services. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Chen to 3 more medical groups and 1 other site, each named with a free account.
Southern California Permanente Medical Group3 medical groupsNames with a free account1 other siteName with a free account
See all 6 affiliations for Dr. ChenSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Chang-Hwa Mary Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence Saint John's Health Center | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Chang-Hwa Mary Chen is one of 6,593 anesthesiologists in California
Anesthesiology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Chen is board certified in anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Chen's licenses on file in 2 states: California and Massachusetts.
Specialties and state licenses
- Anesthesiology, CaliforniaPrimary
- Massachusetts license
Anesthesiologists near Dr. Chen
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
6,593anesthesiologists in California89anesthesiologists in Santa Monica31anesthesiologists at Providence Saint John's Health Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Chang-Hwa Mary Chen billed Medicare for 180 services in 2024
CMS data shows 180 Medicare services from Dr. Chen across 10 procedure codes in 2024, for 243 Medicare patients. Medicare paid $42,686 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024180
Medicare patients243
Paid by Medicare$42,686
Procedure codes10
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 1342024: 11812%
- Surgery
- 2023: 822024: 6224%
- Imaging
- 2023: 142024: 0100%
Dr. Chen compared with the California median for anesthesiologists, 2024
- Dr. Chen
- California median
- Medicare services
- 180vs 722.5 times
- Medicare patients
- 243vs 14370% above
Medians across 5,562 anesthesiologists in California with Dmand AI profiles that report each measure.
Dr. Chen'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.
Need commercial claims for Dr. Chen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other anesthesiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Chang-Hwa Mary Chen treated 243 Medicare patients in 2024, average age 75
CMS counts 243 Medicare patients who saw Dr. Chen in 2024. The largest group is 65 to 74, with 113 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.36, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chen's median patient age at 67, with 50% women.
Medicare patients, 2024243
Average age75
Average risk score1.36
Also on Medicaid13%
Dr. Chen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chen's Medicare patients by sex, 2024
- Women12049%
- Men12351%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis67%
- Ischemic heart disease41%
- Anxiety37%
- Cancer29%
- Mood disorders29%
- Diabetes28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Chang-Hwa Mary Chen takes part in Medicare
Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Chang-Hwa Mary Chen has 3 publications on record
Dmand AI links 3 papers to Dr. Chen, published from 2020 to 2021. 2020 was the busiest year, with 2. The most frequent topics are Analgesics, Opioid, Anesthetics, Local and Arthroplasty, Replacement, Knee. Dr. Chen has published most often in J Knee Surg. Dr. Chen's most frequent co-author is Andrew Glen Yun, MD.
Papers3
Years published2020 to 2021
Topics Dr. Chen writes about most
- Analgesics, Opioid
- Anesthetics, Local
- Arthroplasty, Replacement, Knee
- Bupivacaine
- Pain, Postoperative
Dr. Chen's most frequent co-authors
Recent publications by Dr. Chen
Analgesics, OpioidAnesthetics, LocalArthroplasty, Replacement, Knee
See who Dr. Chen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chen works with, so you can find a warm path to the right anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Chang-Hwa Mary Chen received $94,622 in industry payments from 2016 to 2025
CMS Open Payments shows 93 general payments to Dr. Chen from 15 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 78% of the total. Delcath Systems paid the most, $93,222.
General payments to Dr. Chen by program year, 2016 to 2025
General payments to Dr. Chen by kind, 2016 to 2025
$94.6Kin total
- Consulting fees$74,00078%
- Travel and lodging$18,41419%
- Food and beverage$2,1832%
- Education$250%
Companies that paid Dr. Chen 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. Chang-Hwa Mary Chen graduated from Keck School of Medicine of USC
Dr. Chen graduated from Keck School of Medicine of USC in 2002.
- Medical school
- Board certified in anesthesiology
Source: Dmand AI Professional Profile Data
Dr. Chang-Hwa Mary Chen accepts plans from 2 insurance carriers
Dr. Chen is in network with 2 carriers, including CMS Medicare and RI State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
- RI State Medicaid
Plan types Dr. Chen accepts, by number of carriers
- Medicaid1
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. Chang-Hwa Mary Chen'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) |
| 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 Dr. Chang-Hwa Mary Chen
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. Chang-Hwa Mary Chen's NPI number?
Dr. Chang-Hwa Mary Chen's NPI number is 1245287622. It was assigned on May 30, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Chang-Hwa Mary Chen?
Dr. Chang-Hwa Mary Chen is an anesthesiologist in Santa Monica, California. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Chang-Hwa Mary Chen practice?
Dr. Chen practices at 2121 Santa Monica Blvd, Santa Monica, CA 90404. Dr. Chen's primary practice is Providence Saint John's Health Center in Santa Monica, California, part of Providence Health & Services. Dmand AI also links Dr. Chen to 3 medical groups and 1 other site.
What is Dr. Chang-Hwa Mary Chen's office phone number?
The practice phone on file for Dr. Chen is (310) 829-5511.
What is Dr. Chang-Hwa Mary Chen's medical license number?
Dr. Chen holds California license A85504, one of the licenses on file in 2 states.
Which states has Dr. Chang-Hwa Mary Chen been licensed in?
Dmand AI has state licenses on file for Dr. Chen in California (2003 to 2027) and Massachusetts (2006 to 2014).
Which hospitals is Dr. Chang-Hwa Mary Chen affiliated with?
Dr. Chen practices at Providence Saint John's Health Center in Santa Monica, California.
What medical group is Dr. Chang-Hwa Mary Chen part of?
Dr. Chen is linked to Southern California Permanente Medical Group. Dmand AI links Dr. Chen to 3 more medical groups.
Does Dr. Chang-Hwa Mary Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 180 services in 2024, and Dr. Chen accepts Medicare assignment.
How many Medicare patients does Dr. Chang-Hwa Mary Chen see?
CMS counts 243 Medicare patients who saw Dr. Chen in 2024, with an average age of 75.
Show 8 more questionsShow fewer questions
Is Dr. Chang-Hwa Mary Chen board certified?
Yes. Dr. Chen is board certified in anesthesiology by the American Board of Anesthesiology.
What services does Dr. Chang-Hwa Mary Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were surgery: heart and blood vessels (36620), anesthesia (01402) and anesthesia (00790).
Where did Dr. Chang-Hwa Mary Chen go to medical school?
Dr. Chen graduated from Keck School of Medicine of USC in 2002.
Has Dr. Chang-Hwa Mary Chen received payments from drug or device companies?
CMS Open Payments shows $94,622 in general payments to Dr. Chen from 15 companies from 2016 to 2025. The largest total came from Delcath Systems.
How long has Dr. Chang-Hwa Mary Chen been practicing?
Dr. Chen graduated from medical school in 2002, 24 years ago.
Does Dr. Chang-Hwa Mary Chen do research?
Dmand AI links 3 publications to Dr. Chen, published from 2020 to 2021.
Who does Dr. Chang-Hwa Mary Chen publish with?
Dr. Chen's most frequent co-authors are Andrew Glen Yun, MD (3 shared papers).
What insurance does Dr. Chang-Hwa Mary Chen accept?
Dr. Chen is in network with 2 carriers, including CMS Medicare and RI State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
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