J Cardiothorac Vasc Anesth
Cardiac Surgical ProceduresCardiopulmonary BypassEurope
Dr. Marvin Guinyu Chang, MD, PhD
NPI1316381296PAC ID3274806260
- Medicare services, 2024
- 434
- Medicare patients, 2024
- 397
- Publications
- 56
- Hospital affiliations
- 1
- Industry payments
- $21,290
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. Marvin Guinyu Chang is an anesthesiologist in Boston, Massachusetts
Dr. Chang practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Dr. Chang's NPI, 1316381296, was assigned on April 23, 2013. Dr. Chang graduated from University of California, Geffen School of Medicine in 2013. Dr. Chang holds Massachusetts license 270769.
NPI and contact details
- NPI
- 1316381296NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274806260
- NPI enumeration date
- April 23, 2013
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 39
- Medical school graduation
- 2013
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marvin Guinyu Chang practices at Massachusetts General Hospital in Boston, Massachusetts
Dr. Chang's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Dr. Marvin Guinyu Chang is affiliated with 2 sites of care and 2 medical groups
Dr. Chang's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. The medical group on file is Massachusetts General Physicians Organization (MGPO). Dmand AI also links Dr. Chang to 1 more community health center and 1 medical group, each named with a free account.
Massachusetts General Physicians Organization (MGPO)1 community health centerName with a free account1 medical groupName with a free account
See all 4 affiliations for Dr. ChangSources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marvin Guinyu Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Mass General Brigham and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Marvin Guinyu Chang is one of 1,552 anesthesiologists in Massachusetts
Anesthesiology is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Chang is licensed in Massachusetts.
Specialties and state licenses
- Anesthesiology, MassachusettsPrimary
Anesthesiologists near Dr. Chang
Counts of anesthesiologists with a Dmand AI profile, by place and practice. Each opens the list.
1,552anesthesiologists in Massachusetts660anesthesiologists in Boston156anesthesiologists at Massachusetts General Hospital
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Marvin Guinyu Chang billed Medicare for 434 services in 2024
CMS data shows 434 Medicare services from Dr. Chang across 8 procedure codes in 2024, for 397 Medicare patients. Medicare paid $65,171 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2024434
Medicare patients397
Paid by Medicare$65,171
Procedure codes8
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Anesthesia
- 2023: 2242024: 2211%
- Office and hospital visits
- 2023: 2632024: 21319%
- Surgery
- 2023: 152024: 0100%
Dr. Chang compared with the Massachusetts median for anesthesiologists, 2024
- Dr. Chang
- Massachusetts median
- Medicare services
- 434vs 1263.4 times
- Medicare patients
- 397vs 20099% above
Medians across 1,366 anesthesiologists in Massachusetts 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 anesthesiologists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marvin Guinyu Chang treated 397 Medicare patients in 2024, average age 72
CMS counts 397 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 174 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 28% are also on Medicaid. Their average risk score is 2.76, 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 62, with 52% women.
Medicare patients, 2024397
Average age72
Average risk score2.76
Also on Medicaid28%
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women18847%
- Men20953%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Mood disorders48%
- Anxiety45%
- Ischemic heart disease45%
- Chronic kidney disease44%
- Depression43%
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 62
Patient panel by sex, all payers
- Women52%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Marvin Guinyu Chang takes part in Medicare
Dr. Chang 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. Marvin Guinyu Chang has 56 publications on record
Dmand AI links 56 papers to Dr. Chang, published from 2011 to 2025. 2020 was the busiest year, with 18. The most frequent topics are COVID-19, SARS-CoV-2 and Pandemics. Dr. Chang has published most often in J Cardiothorac Vasc Anesth. Dr. Chang's most frequent co-authors are Lauren E. Gibson, MD, Sheri M. Berg, MD and Jamel P. Ortoleva, MD.
Papers56
Years published2011 to 2025
Dr. Chang's papers by year, 2011 to 2025
Topics Dr. Chang writes about most
- COVID-19
- SARS-CoV-2
- Pandemics
- Pneumonia, Viral
- Coronavirus Infections
- Betacoronavirus
- Point-of-Care Systems
- Ultrasonography
Dr. Chang's most frequent co-authors
- Lauren E. Gibson, MD14 shared papers
- Sheri M. Berg, MD4 shared papers
- Jamel P. Ortoleva, MD4 shared papers
Recent publications by Dr. Chang
Extracorporeal Membrane OxygenationHeart VentriclesMonitoring, Physiologic
J Cardiothorac Vasc Anesth
Atrial FibrillationCardiologyDisease Management
LungLung DiseasesPoint-of-Care Systems
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 anesthesiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Marvin Guinyu Chang received $21,290 in industry payments from 2021 to 2024
CMS Open Payments shows 3 general payments to Dr. Chang from 3 drug and device companies from 2021 to 2024. Speaker and faculty fees make up the largest share, 93% of the total. Roche Diagnostics International Ltd paid the most, $19,000.
General payments to Dr. Chang by program year, 2021 to 2024
General payments to Dr. Chang by kind, 2021 to 2024
$21.3Kin total
- Speaker and faculty fees$19,85093%
- Honoraria$1,4407%
Companies that paid Dr. Chang the most, 2021 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marvin Guinyu Chang graduated from University of California, Geffen School of Medicine
Dr. Chang graduated from University of California, Geffen School of Medicine in 2013.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marvin Guinyu 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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Marvin Guinyu 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. Marvin Guinyu Chang's NPI number?
Dr. Marvin Guinyu Chang's NPI number is 1316381296. It was assigned on April 23, 2013, and it is active in the NPI Registry.
What kind of doctor is Dr. Marvin Guinyu Chang?
Dr. Marvin Guinyu Chang is an anesthesiologist in Boston, Massachusetts. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Marvin Guinyu Chang practice?
Dr. Chang practices at 55 Fruit Street, Boston, MA 02114. Dr. Chang's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Dr. Chang to 1 community health center and 1 medical group.
What is Dr. Marvin Guinyu Chang's office phone number?
The practice phone on file for Dr. Chang is (617) 726-2000.
What is Dr. Marvin Guinyu Chang's medical license number?
Dr. Chang holds Massachusetts license 270769.
Which hospitals is Dr. Marvin Guinyu Chang affiliated with?
Dr. Chang practices at Massachusetts General Hospital in Boston, Massachusetts.
What medical group is Dr. Marvin Guinyu Chang part of?
Dr. Chang is linked to Massachusetts General Physicians Organization (MGPO). Dmand AI links Dr. Chang to 1 more medical group.
Does Dr. Marvin Guinyu Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 434 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. Marvin Guinyu Chang see?
CMS counts 397 Medicare patients who saw Dr. Chang in 2024, with an average age of 72.
What services does Dr. Marvin Guinyu Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were critical care (99291), anesthesia (00104) and anesthesia (00731).
Show 5 more questionsShow fewer questions
Where did Dr. Marvin Guinyu Chang go to medical school?
Dr. Chang graduated from University of California, Geffen School of Medicine in 2013.
Has Dr. Marvin Guinyu Chang received payments from drug or device companies?
CMS Open Payments shows $21,290 in general payments to Dr. Chang from 3 companies from 2021 to 2024. The largest total came from Roche Diagnostics International Ltd.
How long has Dr. Marvin Guinyu Chang been practicing?
Dr. Chang graduated from medical school in 2013, 13 years ago.
Does Dr. Marvin Guinyu Chang do research?
Dmand AI links 56 publications to Dr. Chang, published from 2011 to 2025.
Who does Dr. Marvin Guinyu Chang publish with?
Dr. Chang's most frequent co-authors are Lauren E. Gibson, MD (14 shared papers), Sheri M. Berg, MD (4 shared papers) and Jamel P. Ortoleva, MD (4 shared papers).
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