Dr. David S. Chang, MD
- Medicare services, 2024
- 103
- Medicare patients, 2024
- 51
- Part D claims, 2018
- 20
- Publications
- 20
- Hospital affiliations
- 2
- Practice address
- 45 Castro St Lbby, San Francisco, CA 94114
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
California Pacific Medical Ctr-Davies Campus Hosp - HOPD (45 Castro St Lbby)
Acute Care Hospital outpatient department · San Francisco, California
Find Dr. Chang's professional email, personal email and mobile number
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Dr. David S. Chang is a plastic surgeon in San Francisco, California
Dr. Chang practices at California Pacific Medical Ctr-Davies Campus Hosp - HOPD (45 Castro St Lbby) in San Francisco, California.
Dr. Chang's NPI, 1629093208, was assigned on July 13, 2006. Dr. Chang graduated from New York University School of Medicine in 1997. Dr. Chang holds California license A68382.
- NPI
- 1629093208NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799788113
- NPI enumeration date
- July 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David S. Chang practices at California Pacific Medical Ctr-Davies Campus Hosp - HOPD (45 Castro St Lbby) in San Francisco, California
Dr. Chang's primary practice is California Pacific Medical Ctr-Davies Campus Hosp - HOPD (45 Castro St Lbby), at 45 Castro St Lbby, San Francisco, CA 94114.
- California Pacific Medical Ctr-Davies Campus Hosp - HOPD (45 Castro St Lbby)45 Castro St Lbby, San Francisco, CA 94114
Source: Dmand AI Affiliation Data
Dr. David S. Chang is affiliated with 3 sites of care and 2 medical groups
Dr. Chang's primary practice is California Pacific Medical Ctr-Davies Campus Hosp - HOPD (45 Castro St Lbby) in San Francisco, California. Dr. Chang is also affiliated with California Pacific Medical Center Davies Campus. The medical group on file is Ucsf Dept Of Surgery. Dmand AI also links Dr. Chang to 1 more hospital and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. David S. 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 |
|---|---|
| California Pacific Medical Ctr-Davies Campus Hosp - HOPD (45 Castro St Lbby) | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David S. Chang is one of 778 plastic surgeons in California
Plastic surgery is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 208200000X. Dr. Chang is board certified in plastic surgery by the American Board of Plastic Surgery. Dr. Chang is licensed in California.
Specialties and state licenses
- Plastic surgery, CaliforniaPrimary
Clinical focus
Dmand AI lists breast reconstruction and breast surgery among the conditions Dr. Chang treats.
Plastic surgeons near Dr. Chang
Counts of plastic 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. David S. Chang billed Medicare for 103 services in 2024
CMS data shows 103 Medicare services from Dr. Chang across 4 procedure codes in 2024, for 51 Medicare patients. Medicare paid $21,501 for them.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 282024: 69146%
- Office and hospital visits
- 2023: 482024: 3429%
Where Dr. Chang's Medicare services took place, 2024
- In an office3433%
- In a facility6967%
Dr. Chang compared with the California median for plastic surgeons, 2024
- Dr. Chang
- California median
- Medicare services
- 103vs 5878% above
- Medicare patients
- 51vs 5914% below
- Part D claims
- 20vs 2623% below
Medians across 622 plastic surgeons 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other plastic surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David S. Chang treated 51 Medicare patients in 2024, average age 70
CMS counts 51 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 30 patients. 75% of them have high cholesterol, and 71% have cancer. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 54, with 77% women.
Dr. Chang's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High cholesterol75%
- Cancer71%
- High blood pressure53%
- Arthritis43%
- Osteoporosis33%
- Mood disorders24%
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 54
Patient panel by sex, all payers
- Women77%
- Men16%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David S. Chang wrote 20 Medicare Part D claims in 2018
In 2018, Dr. Chang wrote 20 Medicare Part D claims. They cover 1 drug, with $123 in total drug cost. In 2016, CMS named 67 claims across 3 drugs.
Dr. Chang's most prescribed drugs by claims, 2018
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2016 to 2018
- 2016
- 2018
- Claims for drugs CMS names
- 2016: 672018: 2070%
Drugs named by CMS: 1 in 2018, 3 in 2016.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. David S. Chang ranks in the 75th percentile for mastectomy in Medicare
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 17 procedures of mastectomy by Dr. Chang, more than 75% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Chang ranks in Medicare procedure volume
- Mastectomy
- 75th percentile17 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. David S. Chang has 20 publications on record
Dmand AI links 20 papers to Dr. Chang, published from 2009 to 2016. 2009 was the busiest year, with 2. The most frequent topics are Ischemia, Hindlimb and Muscle, Skeletal. Dr. Chang has published most often in J Vasc Surg. Dr. Chang's most frequent co-authors are Mary H. Mcgrath, MD, Rajabrata Sarkar, MD, PhD and Daniel Michael Balkin, MD, PhD.
Dr. Chang's papers by year, 2009 to 2016
Topics Dr. Chang writes about most
- Ischemia
- Hindlimb
- Muscle, Skeletal
- Adenoviridae
- Neovascularization, Physiologic
- Oxygen
- Rats, Sprague-Dawley
- Regional Blood Flow
Dr. Chang's most frequent co-authors
- Mary H. Mcgrath, MD4 shared papers
- Rajabrata Sarkar, MD, PhD3 shared papers
- Daniel Michael Balkin, MD, PhD2 shared papers
Recent publications by Dr. Chang
Am J Med Qual
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 plastic surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. David S. Chang received $23,714 in industry payments from 2016 to 2025
CMS Open Payments shows 115 general payments to Dr. Chang from 35 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 43% of the total. Surgalign Spine Technologies, Inc. paid the most, $9,494.
General payments to Dr. Chang by program year, 2016 to 2025
General payments to Dr. Chang by kind, 2016 to 2025
- Consulting fees$10,18643%
- Food and beverage$8,04934%
- Gifts$2,0549%
- Travel and lodging$1,7257%
- Honoraria$1,7007%
Companies that paid Dr. Chang 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. David S. Chang has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chang.
Awards and honors for Dr. Chang
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. David S. Chang graduated from New York University School of Medicine
Dr. Chang graduated from New York University School of Medicine in 1997. Dr. Chang is a member of ACS, American Society for Reconstructive Microsurgery, ASPS and San Francisco Surgical Society.
- Medical school
- Board certified in plastic surgery
Source: Dmand AI Professional Profile Data
Dr. David S. Chang accepts plans from 6 insurance carriers
Dr. Chang is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Chang accepts, by number of carriers
- Medicare6
- PPO5
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. David S. 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 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) |
| 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) |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. David S. 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. David S. Chang's NPI number?
Dr. David S. Chang's NPI number is 1629093208. It was assigned on July 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. David S. Chang?
Dr. David S. Chang is a plastic surgeon in San Francisco, California. The primary specialty in the NPI Registry is Plastic Surgery Physician (taxonomy code 208200000X).
Where does Dr. David S. Chang practice?
Dr. Chang practices at 45 Castro St Lbby, San Francisco, CA 94114. Dr. Chang's primary practice is California Pacific Medical Ctr-Davies Campus Hosp - HOPD (45 Castro St Lbby) in San Francisco, California. Dmand AI also links Dr. Chang to 1 hospital and 1 medical group.
What is Dr. David S. Chang's medical license number?
Dr. Chang holds California license A68382.
Which hospitals is Dr. David S. Chang affiliated with?
Dr. Chang is affiliated with California Pacific Medical Center Davies Campus. Dmand AI links Dr. Chang to 1 more hospital.
What medical group is Dr. David S. Chang part of?
Dr. Chang is linked to Ucsf Dept Of Surgery. Dmand AI links Dr. Chang to 1 more medical group.
Does Dr. David S. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 103 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. David S. Chang see?
CMS counts 51 Medicare patients who saw Dr. Chang in 2024, with an average age of 70.
Is Dr. David S. Chang board certified?
Yes. Dr. Chang is board certified in plastic surgery by the American Board of Plastic Surgery.
What services does Dr. David S. Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were surgery: skin and soft tissue (14302), office visit, new patient (99203) and surgery: skin and soft tissue (14301).
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Where did Dr. David S. Chang go to medical school?
Dr. Chang graduated from New York University School of Medicine in 1997.
What drugs does Dr. David S. Chang prescribe most?
In 2018 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. David S. Chang received payments from drug or device companies?
CMS Open Payments shows $23,714 in general payments to Dr. Chang from 35 companies from 2016 to 2025. The largest total came from Surgalign Spine Technologies, Inc.
How long has Dr. David S. Chang been practicing?
Dr. Chang graduated from medical school in 1997, 29 years ago.
Does Dr. David S. Chang do research?
Dmand AI links 20 publications to Dr. Chang, published from 2009 to 2016.
Who does Dr. David S. Chang publish with?
Dr. Chang's most frequent co-authors are Mary H. Mcgrath, MD (4 shared papers), Rajabrata Sarkar, MD, PhD (3 shared papers) and Daniel Michael Balkin, MD, PhD (2 shared papers).
What insurance does Dr. David S. Chang accept?
Dr. Chang is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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