Nan Chen
- Medicare services, 2024
- 658
- Medicare patients, 2024
- 168
- Part D claims, 2024
- 692
- Hospital affiliations
- 3
- Industry payments
- $34,259
- Practice address
- 5721 S Maryland Ave, Chicago, IL 60637
- Practice phone
- Call (773) 702-1530
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Comer Children's Hospital - Hyde Park
Chicago, Illinois
Find Nan Chen'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.
Nan Chen is an internist in Chicago, Illinois
Nan Chen practices at Comer Children's Hospital - Hyde Park in Chicago, Illinois.
Nan Chen's NPI, 1558749887, was assigned on May 6, 2015. Nan Chen graduated from New York Medical College in 2015. Nan Chen holds Texas license BP10052888.
- NPI
- 1558749887NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3678970092
- NPI enumeration date
- May 6, 2015
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (773) 702-1530
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- 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)
Nan Chen practices at Comer Children's Hospital - Hyde Park in Chicago, Illinois
Nan Chen's primary practice is Comer Children's Hospital - Hyde Park, at 5721 S Maryland Ave, Chicago, IL 60637 in Cook County. The practice phone is (773) 702-1530.
- Comer Children's Hospital - Hyde Park5721 S Maryland Ave, Chicago, IL 60637 · Cook CountyPhone(773) 702-1530
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Nan Chen is affiliated with 4 sites of care and 2 medical groups
Nan Chen's primary practice is Comer Children's Hospital - Hyde Park in Chicago, Illinois. Nan Chen is also affiliated with University of Chicago Medical Center. The medical group on file is UChicago Medicine Physicians. Dmand AI also links Nan Chen to 2 more hospitals and 1 medical group, each 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 Nan Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Nan Chen practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Comer Children's Hospital - Hyde Park | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Nan Chen is one of 5,652 internists in Illinois
Internal medicine is Nan Chen's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Nan Chen is licensed in Texas.
Specialties and state licenses
- Internal medicine, TexasPrimary
Internists near Nan Chen
Counts of internists 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
Nan Chen billed Medicare for 658 services in 2024
CMS data shows 658 Medicare services from Nan Chen across 8 procedure codes in 2024, for 168 Medicare patients. Medicare paid $49,014 for them. Every service was in a facility, such as a hospital, rather than an office.
Nan Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4382024: 4656%
- Other services
- 2023: 02024: 193
Nan Chen compared with the Illinois median for internists, 2024
- Nan Chen
- Illinois median
- Medicare services
- 658vs 56616% above
- Medicare patients
- 168vs 20819% below
- Part D claims
- 573vs 2842.0 times
Medians across 5,192 internists in Illinois with Dmand AI profiles that report each measure.
Nan Chen'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Nan Chen treated 168 Medicare patients in 2024, average age 72
CMS counts 168 Medicare patients who saw Nan Chen in 2024. The largest group is 65 to 74, with 82 patients. 75% of them have cancer, and 75% have high blood pressure. 33% are also on Medicaid. Their average risk score is 2.23, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Nan Chen's median patient age at 71, with 94% women.
Nan Chen's Medicare patients by age, 2024
Nan Chen's Medicare patients by sex, 2024
- Women14285%
- Men2615%
Chronic conditions among Nan Chen's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol65%
- Arthritis46%
- Chronic kidney disease32%
- Diabetes29%
- Osteoporosis29%
- Anxiety23%
Share of Medicare patients with each condition. A patient can have several.
Nan Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women94%
- Men6%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Nan Chen wrote 692 Medicare Part D claims in 2024
In 2024, Nan Chen wrote 692 Medicare Part D claims for 168 patients. 81% of them were for generic drugs. CMS names the drug for 573 of them, across 12 drugs with 11 or more claims each, at $1,146,451 in total drug cost. In 2023, CMS named 640 claims across 13 drugs.
Nan Chen's Part D claims by kind of drug, 2024
- Generic560 claims81%
- Brand-name132 claims19%
Nan Chen'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 Nan Chen's Part D claims, 2024
- Opioids2%13 of 692 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6402024: 57310%
Drugs named by CMS: 12 in 2024, 13 in 2023.
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
Nan Chen offers telehealth to Medicare patients
Nan Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Nan Chen as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Nan Chen received $34,259 in industry payments from 2017 to 2025
CMS Open Payments shows 135 general payments to Nan Chen from 24 drug and device companies from 2017 to 2025. Consulting fees make up the largest share, 84% of the total. TerSera Therapeutics LLC paid the most, $6,405.
General payments to Nan Chen by program year, 2017 to 2025
General payments to Nan Chen by kind, 2017 to 2025
- Consulting fees$28,63484%
- Food and beverage$3,55010%
- Compensation for serving as faculty or as a speaker for a medical education program$8432%
- Travel and lodging$5582%
- Other$5492%
Companies that paid Nan Chen the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Nan Chen graduated from New York Medical College
Nan Chen graduated from New York Medical College in 2015.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Nan Chen'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 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)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) |
| 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 Nan Chen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Nan Chen's NPI number?
Nan Chen's NPI number is 1558749887. It was assigned on May 6, 2015, and it is active in the NPI Registry.
What does Nan Chen specialize in?
Nan Chen is an internist in Chicago, Illinois. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Nan Chen practice?
Nan Chen practices at 5721 S Maryland Ave, Chicago, IL 60637. Nan Chen's primary practice is Comer Children's Hospital - Hyde Park in Chicago, Illinois. Dmand AI also links Nan Chen to 2 hospitals and 1 medical group.
What is Nan Chen's office phone number?
The practice phone on file for Nan Chen is (773) 702-1530.
What is Nan Chen's medical license number?
Nan Chen holds Texas license BP10052888.
Which hospitals is Nan Chen affiliated with?
Nan Chen is affiliated with University of Chicago Medical Center. Dmand AI links Nan Chen to 2 more hospitals.
What medical group is Nan Chen part of?
Nan Chen is linked to UChicago Medicine Physicians. Dmand AI links Nan Chen to 1 more medical group.
Does Nan Chen accept Medicare?
Yes. CMS data shows Nan Chen billed Medicare for 658 services in 2024, and Nan Chen accepts Medicare assignment.
Does Nan Chen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Nan Chen as offering telehealth services.
How many Medicare patients does Nan Chen see?
CMS counts 168 Medicare patients who saw Nan Chen in 2024, with an average age of 72.
Show 5 more questionsShow fewer questions
What services does Nan Chen bill to Medicare?
In 2024, Nan Chen's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and hospital inpatient care (99233).
Where did Nan Chen go to medical school?
Nan Chen graduated from New York Medical College in 2015.
What drugs does Nan Chen prescribe most?
In 2024 Medicare Part D data, Nan Chen's most prescribed drugs by claims were Letrozole, Anastrozole and Exemestane.
Has Nan Chen received payments from drug or device companies?
CMS Open Payments shows $34,259 in general payments to Nan Chen from 24 companies from 2017 to 2025. The largest total came from TerSera Therapeutics LLC.
How long has Nan Chen been practicing?
Nan Chen graduated from medical school in 2015, 11 years ago.
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