Dr. Kenneth Galen Chang, DO
- Medicare services, 2024
- 89
- Medicare patients, 2024
- 101
- Part D claims, 2024
- 13
- MIPS score, 2024
- 100
- Hospital affiliations
- 3
- Practice address
- 450 Stanyan St, San Francisco, CA 94117
- Practice phone
- Call (415) 353-4739
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
UCSF St Mary's Hospital
San Francisco, California
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. Kenneth Galen Chang is a hospitalist in San Francisco, California
Dr. Chang practices at UCSF St Mary's Hospital in San Francisco, California.
Dr. Chang's NPI, 1609371970, was assigned on March 28, 2018. Dr. Chang graduated from Dr. Kiran C. Patel College of Osteopathic Medicine in 2018. Dr. Chang holds California license 20A18780.
- NPI
- 1609371970NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830591494
- NPI enumeration date
- March 28, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 353-4739
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Kenneth Galen Chang practices at UCSF St Mary's Hospital in San Francisco, California
Dr. Chang's primary practice is UCSF St Mary's Hospital, at 450 Stanyan St, San Francisco, CA 94117 in San Francisco County. The practice phone is (415) 353-4739.
- UCSF St Mary's Hospital450 Stanyan St, San Francisco, CA 94117 · San Francisco CountyPhone(415) 353-4739
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Kenneth Galen Chang is affiliated with 4 sites of care and 3 medical groups
Dr. Chang's primary practice is UCSF St Mary's Hospital in San Francisco, California. Dr. Chang is also affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. Chang to 2 more hospitals and 2 medical groups, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Kenneth Galen Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCSF St Mary's Hospital | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Kenneth Galen Chang is one of 3,186 hospitalists in California
Hospitalist is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Chang is board certified in internal medicine by the American Board of Internal Medicine. Dr. Chang is licensed in California.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
Clinical focus
Dmand AI lists sepsis and stroke among the conditions Dr. Chang treats.
Hospitalists near Dr. Chang
Counts of hospitalists 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. Kenneth Galen Chang billed Medicare for 89 services in 2024
CMS data shows 89 Medicare services from Dr. Chang across 2 procedure codes in 2024, for 101 Medicare patients. Medicare paid $11,957 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 812024: 8910%
Dr. Chang compared with the California median for hospitalists, 2024
- Dr. Chang
- California median
- Medicare services
- 89vs 43079% below
- Medicare patients
- 101vs 20150% below
Medians across 2,991 hospitalists 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 hospitalists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Kenneth Galen Chang treated 101 Medicare patients in 2024, average age 77
CMS counts 101 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 35 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 57% are also on Medicaid. Their average risk score is 2.98, 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 74, with 44% women.
Dr. Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chang's Medicare patients by sex, 2024
- Women4747%
- Men5453%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Chronic kidney disease56%
- Ischemic heart disease55%
- Arthritis52%
- Diabetes46%
- Mood disorders46%
- Anxiety44%
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 74
Patient panel by sex, all payers
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Kenneth Galen Chang wrote 13 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 13 Medicare Part D claims. 85% of them were for generic drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic11 claims85%
- Brand-name and other2 claims15%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Kenneth Galen Chang scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Chang for performance year 2024, reported as part of a group. Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chang's MIPS scores, performance year 2024
- 100of 100Final score
- 95of 100Quality
- 40of 100Improvement Activities
- 81of 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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Kenneth Galen Chang received $284 in industry payments from 2021 to 2023
CMS Open Payments shows 4 general payments to Dr. Chang from 2 drug and device companies from 2021 to 2023. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $263.
General payments to Dr. Chang by program year, 2021 to 2023
Companies that paid Dr. Chang the most, 2021 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Kenneth Galen Chang graduated from Dr. Kiran C. Patel College of Osteopathic Medicine
Dr. Chang graduated from Dr. Kiran C. Patel College of Osteopathic Medicine in 2018.
- Medical school
- Board certified in internal medicine
- Board certified in 2021 - 2027
- Board certified in 2020 - 2021
- Board certified in 2021 - 2022
Source: Dmand AI Professional Profile Data
Dr. Kenneth Galen Chang accepts plans from 4 insurance carriers
Dr. Chang is in network with 4 carriers, including Elevance, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- CMS Medicare
- NV State Medicaid
Plan types Dr. Chang accepts, by number of carriers
- HMO2
- Medicare2
- POS2
- PPO2
- EPO1
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Kenneth Galen 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| Part D prescribing | Medicare Part D Prescribers - 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. Kenneth Galen 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. Kenneth Galen Chang's NPI number?
Dr. Kenneth Galen Chang's NPI number is 1609371970. It was assigned on March 28, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Kenneth Galen Chang?
Dr. Kenneth Galen Chang is a hospitalist in San Francisco, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Kenneth Galen Chang practice?
Dr. Chang practices at 450 Stanyan St, San Francisco, CA 94117. Dr. Chang's primary practice is UCSF St Mary's Hospital in San Francisco, California. Dmand AI also links Dr. Chang to 2 hospitals and 2 medical groups.
What is Dr. Kenneth Galen Chang's office phone number?
The practice phone on file for Dr. Chang is (415) 353-4739.
What is Dr. Kenneth Galen Chang's medical license number?
Dr. Chang holds California license 20A18780.
Which hospitals is Dr. Kenneth Galen Chang affiliated with?
Dr. Chang is affiliated with UCSF Helen Diller Medical Center at Parnassus Heights. Dmand AI links Dr. Chang to 2 more hospitals.
What medical group is Dr. Kenneth Galen Chang part of?
Dr. Chang is linked to UCSF Pediatrics. Dmand AI links Dr. Chang to 2 more medical groups.
Does Dr. Kenneth Galen Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 89 services in 2024, and Dr. Chang accepts Medicare assignment.
What is Dr. Kenneth Galen Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.
How many Medicare patients does Dr. Kenneth Galen Chang see?
CMS counts 101 Medicare patients who saw Dr. Chang in 2024, with an average age of 77.
Show 6 more questionsShow fewer questions
Is Dr. Kenneth Galen Chang board certified?
Yes. Dr. Chang is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Kenneth Galen Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were hospital inpatient care (99223) and hospital inpatient care (99222).
Where did Dr. Kenneth Galen Chang go to medical school?
Dr. Chang graduated from Dr. Kiran C. Patel College of Osteopathic Medicine in 2018.
Has Dr. Kenneth Galen Chang received payments from drug or device companies?
CMS Open Payments shows $284 in general payments to Dr. Chang from 2 companies from 2021 to 2023. The largest total came from Alcon Laboratories Inc.
How long has Dr. Kenneth Galen Chang been practicing?
Dr. Chang graduated from medical school in 2018, 8 years ago.
What insurance does Dr. Kenneth Galen Chang accept?
Dr. Chang is in network with 4 carriers, including Elevance, Blue Cross Blue Shield of Michigan and CMS Medicare. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
Selling to hospitalist practices?
See hospitalists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card