Dr. Steven Hao Sun, MD
- Part D claims, 2024
- 59
- Hospital affiliations
- 2
- Industry payments
- $14
- Medical group
- 1
- State license
- 1
- Practice address
- 1500 E Duarte Rd, Duarte, CA 91010
- Practice phone
- Call (626) 256-4673
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
City of Hope Comprehensive Cancer Center - Duarte
Duarte, California
Find Dr. Sun'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. Steven Hao Sun is a general surgeon in Duarte, California
Dr. Sun practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California.
Dr. Sun's NPI, 1487049706, was assigned on April 2, 2015. Dr. Sun holds California license A186644.
- NPI
- 1487049706NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638470016
- NPI enumeration date
- April 2, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (626) 256-4673
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 37
- Medical school graduation
- 2015
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Steven Hao Sun practices at City of Hope Comprehensive Cancer Center - Duarte in Duarte, California
Dr. Sun's primary practice is City of Hope Comprehensive Cancer Center - Duarte, at 1500 E Duarte Rd, Duarte, CA 91010 in Los Angeles County. The practice phone is (626) 256-4673.
- City of Hope Comprehensive Cancer Center - Duarte1500 E Duarte Rd, Duarte, CA 91010 · Los Angeles CountyPhone(626) 256-4673
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Steven Hao Sun is affiliated with 3 sites of care and 1 medical group
Dr. Sun's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dr. Sun is also affiliated with California Pacific Medical Center Van Ness Campus. The medical group on file is Palo Alto Foundation Medical Group. Dmand AI also links Dr. Sun to 1 more hospital, 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. Steven Hao Sun's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sun practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| City of Hope Comprehensive Cancer Center - Duarte | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Steven Hao Sun is one of 2,926 general surgeons in California
Surgery is Dr. Sun's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Sun is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
General surgeons near Dr. Sun
Counts of general surgeons 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. Steven Hao Sun's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Sun's median patient age at 68, with 42% women.
Dr. Sun's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women42%
- Men55%
Source: Dmand AI Patient Panel Data
Dr. Steven Hao Sun wrote 59 Medicare Part D claims in 2024
In 2024, Dr. Sun wrote 59 Medicare Part D claims for 40 patients. 95% of them were for generic drugs. CMS names the drug for 25 of them, across 1 drug with 11 or more claims each, at $116 in total drug cost.
Dr. Sun's Part D claims by kind of drug, 2024
- Generic56 claims95%
- Brand-name and other3 claims5%
Dr. Sun'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. Sun's Part D claims, 2024
- Opioids51%30 of 59 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
Dr. Steven Hao Sun ranks in the 89th percentile for melanoma (skin cancer) excision in Medicare
Dr. Sun accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 65 procedures of melanoma (skin cancer) excision by Dr. Sun, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Sun ranks in Medicare procedure volume
- Melanoma (skin cancer) excision
- 89th percentile65 procedures
- Skin biopsy
- 59th percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Steven Hao Sun received $14 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Sun from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Ipsen Biopharmaceuticals, Inc paid the most, $14.
Companies that paid Dr. Sun the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Steven Hao Sun'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Steven Hao Sun
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. Steven Hao Sun's NPI number?
Dr. Steven Hao Sun's NPI number is 1487049706. It was assigned on April 2, 2015, and it is active in the NPI Registry.
What kind of doctor is Dr. Steven Hao Sun?
Dr. Steven Hao Sun is a general surgeon in Duarte, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Steven Hao Sun practice?
Dr. Sun practices at 1500 E Duarte Rd, Duarte, CA 91010. Dr. Sun's primary practice is City of Hope Comprehensive Cancer Center - Duarte in Duarte, California. Dmand AI also links Dr. Sun to 1 hospital.
What is Dr. Steven Hao Sun's office phone number?
The practice phone on file for Dr. Sun is (626) 256-4673.
What is Dr. Steven Hao Sun's medical license number?
Dr. Sun holds California license A186644.
Which hospitals is Dr. Steven Hao Sun affiliated with?
Dr. Sun is affiliated with California Pacific Medical Center Van Ness Campus. Dmand AI links Dr. Sun to 1 more hospital.
What medical group is Dr. Steven Hao Sun part of?
Dr. Sun is linked to Palo Alto Foundation Medical Group.
Does Dr. Steven Hao Sun accept Medicare?
Yes. CMS lists Dr. Sun as accepting Medicare assignment.
What drugs does Dr. Steven Hao Sun prescribe most?
In 2024 Medicare Part D data, Dr. Sun's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Steven Hao Sun received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Dr. Sun from 1 company from 2024 to 2024. The largest total came from Ipsen Biopharmaceuticals, Inc.
How long has Dr. Steven Hao Sun been practicing?
Dr. Sun graduated from medical school in 2015, 11 years ago.
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