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Dr. Hannah Choi Chang, MD
NPI1134135288PAC ID2668528472
- Medicare services, 2024
- 141
- Medicare patients, 2024
- 237
- Publications
- 2
- Hospital affiliations
- 2
- Industry payments
- $184
- Practice address
- 6600 Bruceville Road, Sacramento, CA 95823
- Practice phone
- Call (916) 688-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chang'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. Hannah Choi Chang is a neuroradiologist in Sacramento, California
Dr. Chang practices at Kaiser Permanente South Sacramento Medical Center in Sacramento, California, part of Kaiser Permanente.
Dr. Chang's NPI, 1134135288, was assigned on July 31, 2006. Dr. Chang graduated from The Robert Larner, M.D. College of Medicine in 2003. Dr. Chang holds California license A120635.
NPI and contact details
- NPI
- 1134135288NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2668528472
- NPI enumeration date
- July 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (916) 688-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Hannah Choi Chang practices at Kaiser Permanente South Sacramento Medical Center in Sacramento, California
Dr. Chang's primary practice is Kaiser Permanente South Sacramento Medical Center, at 6600 Bruceville Road, Sacramento, CA 95823 in Sacramento County. The practice phone is (916) 688-2000.
- Kaiser Permanente South Sacramento Medical Center6600 Bruceville Road, Sacramento, CA 95823 · Sacramento CountyPhone(916) 688-2000
Source: Dmand AI Affiliation Data
Dr. Hannah Choi Chang is affiliated with 2 sites of care and 1 medical group
Dr. Chang's primary practice is Kaiser Permanente South Sacramento Medical Center in Sacramento, California, part of Kaiser Permanente. Dr. Chang is also affiliated with Sacramento Medical Center. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Hannah Choi Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente South Sacramento Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Hannah Choi Chang is one of 202 neuroradiologists in California
Neuroradiology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 2085N0700X. Dr. Chang is board certified in diagnostic radiology by the American Board of Radiology. Dmand AI has Dr. Chang's licenses on file in 3 states: California, Michigan and Ohio.
Specialties and state licenses
- Neuroradiology, CaliforniaPrimary
- Michigan license
- Ohio license
Neuroradiologists near Dr. Chang
Counts of neuroradiologists with a Dmand AI profile, by place and practice. Each opens the list.
202neuroradiologists in California16neuroradiologists in Sacramento2neuroradiologists at Kaiser Permanente South Sacramento Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Hannah Choi Chang billed Medicare for 141 services in 2024
CMS data shows 141 Medicare services from Dr. Chang across 6 procedure codes in 2024, for 237 Medicare patients. Medicare paid $4,465 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024141
Medicare patients237
Paid by Medicare$4,465
Procedure codes6
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1662024: 14115%
Dr. Chang compared with the California median for neuroradiologists, 2024
- Dr. Chang
- California median
- Medicare services
- 141vs 1,32689% below
- Medicare patients
- 237vs 88673% below
Medians across 174 neuroradiologists in California with Dmand AI profiles that report each measure.
Dr. Chang'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. Chang?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other neuroradiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Hannah Choi Chang treated 237 Medicare patients in 2024, average age 69
CMS counts 237 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 99 patients. 75% of them have high blood pressure, and 57% have high cholesterol. 78% are also on Medicaid. Their average risk score is 1.97, 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. Chang's median patient age at 55, with 58% women.
Medicare patients, 2024237
Average age69
Average risk score1.97
Also on Medicaid78%
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women12754%
- Men11046%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol57%
- Arthritis49%
- Diabetes47%
- Mood disorders38%
- Chronic kidney disease33%
- Depression32%
- Stroke or TIA30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Hannah Choi Chang takes part in Medicare
Dr. Chang 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. Hannah Choi Chang has 2 publications on record
Dmand AI links 2 papers to Dr. Chang. The most frequent topics are Tomography, X-Ray Computed.
Papers2
Topics Dr. Chang writes about most
- Tomography, X-Ray Computed
Recent publications by Dr. Chang
Diagnosis, DifferentialDiagnostic ErrorsOvarian Diseases
See who Dr. Chang researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chang works with, so you can find a warm path to the right neuroradiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Hannah Choi Chang received $184 in industry payments from 2024 to 2025
CMS Open Payments shows 2 general payments to Dr. Chang from 2 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Genentech, Inc. paid the most, $150.
General payments to Dr. Chang by program year, 2024 to 2025
Companies that paid Dr. Chang the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Hannah Choi Chang graduated from The Robert Larner, M.D. College of Medicine
Dr. Chang graduated from The Robert Larner, M.D. College of Medicine in 2003.
- Medical school
- Board certified in diagnostic radiology
- Board certified in neuroradiology
Source: Dmand AI Professional Profile Data
Dr. Hannah Choi Chang accepts plans from 2 insurance carriers
Dr. Chang is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Chang accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Hannah Choi Chang'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. Hannah Choi Chang
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. Hannah Choi Chang's NPI number?
Dr. Hannah Choi Chang's NPI number is 1134135288. It was assigned on July 31, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Hannah Choi Chang?
Dr. Hannah Choi Chang is a neuroradiologist in Sacramento, California. The primary specialty in the NPI Registry is Neuroradiology Physician (taxonomy code 2085N0700X).
Where does Dr. Hannah Choi Chang practice?
Dr. Chang practices at 6600 Bruceville Road, Sacramento, CA 95823. Dr. Chang's primary practice is Kaiser Permanente South Sacramento Medical Center in Sacramento, California, part of Kaiser Permanente.
What is Dr. Hannah Choi Chang's office phone number?
The practice phone on file for Dr. Chang is (916) 688-2000.
What is Dr. Hannah Choi Chang's medical license number?
Dr. Chang holds California license A120635, one of the licenses on file in 3 states.
Which states has Dr. Hannah Choi Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in California (2012 to 2026), Michigan (2003 to 2015) and Ohio (2009 to 2015).
Which hospitals is Dr. Hannah Choi Chang affiliated with?
Dr. Chang practices at Kaiser Permanente South Sacramento Medical Center in Sacramento, California. Dr. Chang is also affiliated with Sacramento Medical Center.
What medical group is Dr. Hannah Choi Chang part of?
Dr. Chang is linked to The Permanente Medical Group, Inc.
Does Dr. Hannah Choi Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 141 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. Hannah Choi Chang see?
CMS counts 237 Medicare patients who saw Dr. Chang in 2024, with an average age of 69.
Show 7 more questionsShow fewer questions
Is Dr. Hannah Choi Chang board certified?
Yes. Dr. Chang is board certified in diagnostic radiology by the American Board of Radiology.
What services does Dr. Hannah Choi Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were diagnostic imaging (71045), diagnostic imaging (70450) and diagnostic imaging (70551).
Where did Dr. Hannah Choi Chang go to medical school?
Dr. Chang graduated from The Robert Larner, M.D. College of Medicine in 2003.
Has Dr. Hannah Choi Chang received payments from drug or device companies?
CMS Open Payments shows $184 in general payments to Dr. Chang from 2 companies from 2024 to 2025. The largest total came from Genentech, Inc.
How long has Dr. Hannah Choi Chang been practicing?
Dr. Chang graduated from medical school in 2003, 23 years ago.
Does Dr. Hannah Choi Chang do research?
Dmand AI links 2 publications to Dr. Chang.
What insurance does Dr. Hannah Choi Chang accept?
Dr. Chang is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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