Dr. David S. Chang, MD

  • San Francisco, CA
  • Plastic surgeon
NPI1629093208PAC ID5799788113
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
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Personal email
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Mobile number
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Social profiles

Primary practice

California Pacific Medical Ctr-Davies Campus Hosp - HOPD (45 Castro St Lbby)

Acute Care Hospital outpatient department · San Francisco, California

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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 and contact details
Medicare PAC ID
5799788113
NPI enumeration date
July 13, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Professional email
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Personal email
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Mobile number
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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.

California Pacific Medical Ctr-Davies Campus Hosp - HOPD (45 Castro St Lbby)Acute Care Hospital outpatient department · San Francisco, CaliforniaPrimary
California Pacific Medical Center Davies CampusAcute care hospital, San Francisco, CAUcsf Dept Of SurgerySurgery group, San Francisco, CA1 hospitalName with a free account1 medical groupName with a free account
See all 5 affiliations for Dr. Chang

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.

EHR by site
SiteEHR 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 groupAvailable 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, CaliforniaPrimaryLicense A68382 · 1999 to 2026 · taxonomy 208200000X

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.

Medicare services, 2024103
Medicare patients51
Paid by Medicare$21,501
Procedure codes4

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.

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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.

Medicare patients, 202451
Average age70
Average risk score0.96

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

  1. High cholesterol75%
  2. Cancer71%
  3. High blood pressure53%
  4. Arthritis43%
  5. Osteoporosis33%
  6. 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.

Part D claims, 201820
Drugs named by CMS1
Total drug cost$123

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.

See all prescribing by Dr. Chang

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.

Papers20
Years published2009 to 2016

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

Recent publications by Dr. Chang

See all 20 publications and co-authors

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.

How network discovery works

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

$23.7Kin total
  • 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.

See all payments to Dr. Chang

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

  1. 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.

  1. Medical schoolNew York University School of Medicine
  2. Board certified in plastic surgeryAmerican Board of 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

  1. Medicare6
  2. PPO5
  3. HMO2
  4. POS2
  5. EPO1

Source: Dmand AI Insurance Network Data

Sources for Dr. David S. Chang's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors 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-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand 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).

Show 7 more questionsShow fewer questions

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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