Calvin Chao

  • Chicago, IL
  • Vascular surgeon
NPI1124588264PAC ID5294069217
Publications
37
Industry payments
$39,080
State license
1
Year NPI issued
2019
Practice address
251 E Huron St, Chicago, IL 60611-2908
Practice phone
Call (312) 926-2000
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Find Calvin Chao'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.

View contacts for free

Calvin Chao is a vascular surgeon in Chicago, Illinois

Calvin Chao practices in Chicago, Illinois.

Calvin Chao's NPI, 1124588264, was assigned on March 24, 2019. Calvin Chao holds Illinois license 125.075029.

NPI and contact details
Medicare PAC ID
5294069217
NPI enumeration date
March 24, 2019
NPI status
Active
Practice phone
(312) 926-2000
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male

Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data

Calvin Chao's practice address is in Chicago, Illinois

Calvin Chao's practice address in the NPI Registry is 251 E Huron St, Chicago, IL 60611-2908. The practice phone is (312) 926-2000.

  • NPI Registry address
    251 E Huron St, Chicago, IL 60611-2908Phone(312) 926-2000

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dmand AI tracks the EHR system at Calvin Chao's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Calvin Chao practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Calvin Chao's practiceAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every site where Calvin Chao practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.

Calvin Chao is one of 164 vascular surgeons in Illinois

Vascular surgery is Calvin Chao's primary specialty in the NPI Registry, under taxonomy code 2086S0129X. Calvin Chao is licensed in Illinois.

Specialties and state licenses

  • Vascular surgery, IllinoisPrimaryLicense 125.075029 · taxonomy 2086S0129X

Vascular surgeons near Calvin Chao

Counts of vascular 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

Calvin Chao's patients have a median age of 74

Across all payers, Dmand AI patient panel data puts Calvin Chao's median patient age at 74, with 100% women.

Calvin Chao's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 74

Patient panel by sex, all payers

  • Women100%
  • Men0%

Source: Dmand AI Patient Panel Data

Calvin Chao has 37 publications on record

Dmand AI links 37 papers to Calvin Chao, published from 2010 to 2025. 2025 was the busiest year, with 5. The most frequent topics are Breast Neoplasms, Chemotherapy, Adjuvant and Gene Expression Profiling. Calvin Chao has published most often in Breast Cancer Res Treat. Calvin Chao's most frequent co-authors are Mark K. Eskandari, MD, Nidhi Reddy, MD and Katherine Elizabeth Hekman, MD, PhD.

Papers37
Years published2010 to 2025

Calvin Chao's papers by year, 2014 to 2025

Topics Calvin Chao writes about most

  • Breast Neoplasms
  • Chemotherapy, Adjuvant
  • Gene Expression Profiling
  • Receptors, Estrogen
  • Antineoplastic Agents
  • Biomarkers, Tumor
  • Lymphatic Metastasis
  • Decision Making

Calvin Chao's most frequent co-authors

Recent publications by Calvin Chao

See all 37 publications and co-authors

See who Calvin Chao researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Calvin Chao works with, so you can find a warm path to the right vascular surgeons.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Calvin Chao received $39,080 in industry payments from 2019 to 2025

CMS Open Payments shows 91 general payments to Calvin Chao from 14 drug and device companies from 2019 to 2025. Grants make up the largest share, 79% of the total. Cook Medical LLC paid the most, $25,907.

General payments to Calvin Chao by program year, 2019 to 2025

General payments to Calvin Chao by kind, 2019 to 2025

$39.1Kin total
  • Grants$31,01679%
  • Food and beverage$4,37511%
  • Education$2,8797%
  • Travel and lodging$8102%

Companies that paid Calvin Chao the most, 2019 to 2025

Share is of all general payments to this clinician.

See all payments to Calvin Chao

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Calvin Chao'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 phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
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)
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 Calvin Chao

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Calvin Chao's NPI number?

Calvin Chao's NPI number is 1124588264. It was assigned on March 24, 2019, and it is active in the NPI Registry.

What does Calvin Chao specialize in?

Calvin Chao is a vascular surgeon in Chicago, Illinois. The primary specialty in the NPI Registry is Vascular Surgery Physician (taxonomy code 2086S0129X).

Where does Calvin Chao practice?

Calvin Chao practices at 251 E Huron St, Chicago, IL 60611-2908.

What is Calvin Chao's office phone number?

The practice phone on file for Calvin Chao is (312) 926-2000.

What is Calvin Chao's medical license number?

Calvin Chao holds Illinois license 125.075029.

Has Calvin Chao received payments from drug or device companies?

CMS Open Payments shows $39,080 in general payments to Calvin Chao from 14 companies from 2019 to 2025. The largest total came from Cook Medical LLC.

How long has Calvin Chao been practicing?

Calvin Chao's NPI was assigned in 2019.

Does Calvin Chao do research?

Dmand AI links 37 publications to Calvin Chao, published from 2010 to 2025.

Who does Calvin Chao publish with?

Calvin Chao's most frequent co-authors are Mark K. Eskandari, MD (5 shared papers), Nidhi Reddy, MD (4 shared papers) and Katherine Elizabeth Hekman, MD, PhD (2 shared papers).

Selling to vascular surgery practices?

See vascular surgeons in Illinois by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)