Dr. William Stephen Chung, MD
- Medicare services, 2024
- 1,357
- Medicare patients, 2024
- 448
- Part D claims, 2024
- 3,595
- Hospital affiliations
- 1
- Industry payments
- $970
- Practice address
- 845 Jackson St, San Francisco, CA 94133
- Practice phone
- Call (415) 982-2400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chung's professional email, personal email and mobile number
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Dr. William Stephen Chung is a cardiologist in San Francisco, California
Dr. Chung practices at Chinese Hospital in San Francisco, California, part of Chinese Hospital.
Dr. Chung's NPI, 1831204486, was assigned on August 21, 2006. Dr. Chung graduated from University of the East College of Medicine in 1984. Dr. Chung holds California license A51482.
- NPI
- 1831204486NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8921102690
- NPI enumeration date
- August 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 982-2400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Stephen Chung practices at Chinese Hospital in San Francisco, California
Dr. Chung's primary practice is Chinese Hospital, at 845 Jackson St, San Francisco, CA 94133 in San Francisco County. The practice phone is (415) 982-2400.
- Chinese Hospital845 Jackson St, San Francisco, CA 94133 · San Francisco CountyPhone(415) 982-2400
Source: Dmand AI Affiliation Data
Dr. William Stephen Chung is affiliated with 3 sites of care and 2 medical groups
Dr. Chung's primary practice is Chinese Hospital in San Francisco, California, part of Chinese Hospital. The medical group on file is Chinese Hospital. Dmand AI also links Dr. Chung to 1 more group practice or clinic, 1 home health agency and 1 medical group, each named with a free account. Dr. Chung's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Stephen Chung's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chung practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Chinese Hospital | Available with a free account |
| +2 more sites and 1 medical group | 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 Chinese Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Stephen Chung is one of 2,375 cardiologists in California
Cardiovascular disease is Dr. Chung's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dmand AI has Dr. Chung's licenses on file in 2 states: California and Ohio.
Specialties and state licenses
- Cardiovascular disease, CaliforniaPrimary
- Ohio license
Clinical focus
Dmand AI lists alzheimer's disease, arthritis, atrial fibrillation and flutter, cardiomyopathy, chronic diabetes, chronic hypertension, chronic kidney disease and chronic obstructive pulmonary disease (COPD) among the conditions Dr. Chung treats.
Cardiologists near Dr. Chung
Counts of cardiologists 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. William Stephen Chung billed Medicare for 1,357 services in 2024
CMS data shows 1,357 Medicare services from Dr. Chung across 12 procedure codes in 2024, for 448 Medicare patients. Medicare paid $71,013 for them.
Dr. Chung's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 4902024: 490No change
- Office and hospital visits
- 2023: 4872024: 4743%
- Other services
- 2023: 1272024: 393209%
Where Dr. Chung's Medicare services took place, 2024
- In an office98473%
- In a facility37327%
Dr. Chung compared with the California median for cardiologists, 2024
- Dr. Chung
- California median
- Medicare services
- 1,357vs 1,56013% below
- Medicare patients
- 448vs 64430% below
- Part D claims
- 3,218vs 1,4102.3 times
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Dr. Chung'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. Chung?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chung and other cardiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Stephen Chung treated 448 Medicare patients in 2024, average age 80
CMS counts 448 Medicare patients who saw Dr. Chung in 2024. The largest group is 85 and over, with 164 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 93% are also on Medicaid. Their average risk score is 1.57, 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. Chung's median patient age at 76, with 53% women.
Dr. Chung's Medicare patients by age, 2024
Dr. Chung's Medicare patients by sex, 2024
- Women26258%
- Men18642%
Chronic conditions among Dr. Chung's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes50%
- Arthritis46%
- Chronic kidney disease42%
- COPD24%
- Osteoporosis23%
- Heart failure22%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chung's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women53%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Stephen Chung wrote 3,595 Medicare Part D claims in 2024
In 2024, Dr. Chung wrote 3,595 Medicare Part D claims for 296 patients. 89% of them were for generic drugs. CMS names the drug for 3,218 of them, across 53 drugs with 11 or more claims each, at $296,935 in total drug cost. In 2023, CMS named 3,349 claims across 54 drugs.
Dr. Chung's Part D claims by kind of drug, 2024
- Generic3,201 claims89%
- Brand-name367 claims10%
- Other27 claims1%
Dr. Chung's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chung's Part D claims, 2024
- Antibiotics1%44 of 3,595 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,3492024: 3,2184%
Drugs named by CMS: 53 in 2024, 54 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. William Stephen Chung takes part in Medicare
Dr. Chung 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. William Stephen Chung received $970 in industry payments from 2016 to 2025
CMS Open Payments shows 36 general payments to Dr. Chung from 6 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 95% of the total. Janssen Pharmaceuticals, Inc paid the most, $578.
General payments to Dr. Chung by program year, 2016 to 2025
General payments to Dr. Chung by kind, 2016 to 2025
- Food and beverage$92595%
- Education$455%
Companies that paid Dr. Chung 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. William Stephen Chung graduated from University of the East College of Medicine
Dr. Chung graduated from University of the East College of Medicine in 1984.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. William Stephen Chung accepts plans from 8 insurance carriers
Dr. Chung is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Elevance
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- Molina
Plan types Dr. Chung accepts, by number of carriers
- Medicare7
- PPO6
- POS3
- EPO2
- HMO2
Source: Dmand AI Insurance Network Data
Sources for Dr. William Stephen Chung'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) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)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) |
| 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. William Stephen Chung
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. William Stephen Chung's NPI number?
Dr. William Stephen Chung's NPI number is 1831204486. It was assigned on August 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Stephen Chung?
Dr. William Stephen Chung is a cardiologist in San Francisco, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. William Stephen Chung practice?
Dr. Chung practices at 845 Jackson St, San Francisco, CA 94133. Dr. Chung's primary practice is Chinese Hospital in San Francisco, California, part of Chinese Hospital. Dmand AI also links Dr. Chung to 1 group practice or clinic, 1 home health agency and 1 medical group.
What is Dr. William Stephen Chung's office phone number?
The practice phone on file for Dr. Chung is (415) 982-2400.
What is Dr. William Stephen Chung's medical license number?
Dr. Chung holds California license A51482, one of the licenses on file in 2 states.
Which states has Dr. William Stephen Chung been licensed in?
Dmand AI has state licenses on file for Dr. Chung in California (1992 to 2026) and Ohio (1986 to 1994).
Which hospitals is Dr. William Stephen Chung affiliated with?
Dr. Chung practices at Chinese Hospital in San Francisco, California.
What medical group is Dr. William Stephen Chung part of?
Dr. Chung is linked to Chinese Hospital. Dmand AI links Dr. Chung to 1 more medical group.
Does Dr. William Stephen Chung accept Medicare?
Yes. CMS data shows Dr. Chung billed Medicare for 1,357 services in 2024, and Dr. Chung accepts Medicare assignment.
How many Medicare patients does Dr. William Stephen Chung see?
CMS counts 448 Medicare patients who saw Dr. Chung in 2024, with an average age of 80.
Show 6 more questionsShow fewer questions
What services does Dr. William Stephen Chung bill to Medicare?
In 2024, Dr. Chung's most billed Medicare services were office visit, established patient (99214), heart test or procedure (93010) and medicare service (G2211).
Where did Dr. William Stephen Chung go to medical school?
Dr. Chung graduated from University of the East College of Medicine in 1984.
What drugs does Dr. William Stephen Chung prescribe most?
In 2024 Medicare Part D data, Dr. Chung's most prescribed drugs by claims were Losartan Potassium, Amlodipine Besylate and Atorvastatin Calcium.
Has Dr. William Stephen Chung received payments from drug or device companies?
CMS Open Payments shows $970 in general payments to Dr. Chung from 6 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. William Stephen Chung been practicing?
Dr. Chung graduated from medical school in 1984, 42 years ago.
What insurance does Dr. William Stephen Chung accept?
Dr. Chung is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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