Dr. Mark C. Tan, MD
- Medicare services, 2024
- 22
- Medicare patients, 2024
- 46
- Hospital affiliations
- 3
- Industry payments
- $1,998
- Medical groups
- 3
- Practice address
- 5841 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
The University of Chicago Medical Center
Chicago, Illinois
Find Dr. Tan'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. Mark C. Tan is an ophthalmic plastic and reconstructive surgery physician in Chicago, Illinois
Dr. Tan practices at The University of Chicago Medical Center in Chicago, Illinois.
Dr. Tan's NPI, 1578658266, was assigned on October 4, 2006. Dr. Tan graduated from Feinberg School of Medicine in 1994. Dr. Tan's California license number on file is A94624.
- NPI
- 1578658266NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618868076
- NPI enumeration date
- October 4, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 702-1530
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark C. Tan practices at The University of Chicago Medical Center in Chicago, Illinois
Dr. Tan's primary practice is The University of Chicago Medical Center, at 5841 S Maryland Ave, Chicago, IL 60637 in Cook County. The practice phone is (773) 702-1530.
- The University of Chicago Medical Center5841 S Maryland Ave, Chicago, IL 60637 · Cook CountyPhone(773) 702-1530
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark C. Tan is affiliated with 5 sites of care and 3 medical groups
Dr. Tan's primary practice is The University of Chicago Medical Center in Chicago, Illinois. Dr. Tan is also affiliated with University of Chicago Medical Center. The medical group on file is UChicago Medicine Physicians. Dmand AI also links Dr. Tan to 2 more hospitals, 2 medical groups and 1 group practice or clinic, 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 Dr. Mark C. Tan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tan practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The University of Chicago Medical Center | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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.
Dr. Mark C. Tan is one of 15 ophthalmic plastics and reconstructive surgery physicians in Illinois
Ophthalmic plastic and reconstructive surgery is Dr. Tan's primary specialty in the NPI Registry, under taxonomy code 207WX0200X. Dr. Tan is board certified in plastic surgery by the American Board of Plastic Surgery. Dmand AI has Dr. Tan's licenses on file in 6 states: California, Illinois, Texas, Indiana, Ohio and New York.
Specialties and state licenses
- Ophthalmic plastic and reconstructive surgery, CaliforniaPrimary
- Illinois license
- Texas license
- Indiana license
- Ohio license
- New York license
Clinical focus
Dmand AI lists breast reconstruction, breast surgery and lymphedema among the conditions Dr. Tan treats.
Ophthalmic plastics and reconstructive surgery physicians near Dr. Tan
Counts of ophthalmic plastics and reconstructive surgery physicians 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. Mark C. Tan billed Medicare for 22 services in 2024
CMS data shows 22 Medicare services from Dr. Tan across 1 procedure code in 2024, all of them office visits, for 46 Medicare patients. Medicare paid $1,616 for them. Every service was in an office.
Dr. Tan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 142024: 2257%
Dr. Tan compared with the Illinois median for ophthalmic plastics and reconstructive surgery physicians, 2024
- Dr. Tan
- Illinois median
- Medicare services
- 22vs 55196% below
- Medicare patients
- 46vs 21078% below
Medians across 15 ophthalmic plastics and reconstructive surgery physicians in Illinois with Dmand AI profiles that report each measure.
Dr. Tan'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. Tan?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Tan and other ophthalmic plastics and reconstructive surgery physicians in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark C. Tan treated 46 Medicare patients in 2024, average age 70
CMS counts 46 Medicare patients who saw Dr. Tan in 2024. The largest group is 65 to 74, with 28 patients. 72% of them have cancer, and 72% have high blood pressure. Their average risk score is 1.83, 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. Tan's median patient age at 63, with 86% women.
Dr. Tan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Tan's Medicare patients, 2024
- Cancer72%
- High blood pressure72%
- High cholesterol67%
- Arthritis54%
- Diabetes24%
- Mood disorders24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Tan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women86%
- Men13%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark C. Tan ranks in the 84th percentile for mastectomy in Medicare
Dr. Tan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 27 procedures of mastectomy by Dr. Tan, more than 84% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Tan ranks in Medicare procedure volume
- Mastectomy
- 84th percentile27 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)
Removal or shaving of skin growth: 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Mark C. Tan received $1,998 in industry payments from 2016 to 2025
CMS Open Payments shows 23 general payments to Dr. Tan from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Sientra, Inc. paid the most, $603.
General payments to Dr. Tan by program year, 2016 to 2025
Companies that paid Dr. Tan 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. Mark C. Tan has 1 award and honors on record
Dmand AI lists 1 award for Dr. Tan.
Awards and honors for Dr. Tan
- Undated
- ACS Fellow
Source: Dmand AI Professional Profile Data
Dr. Mark C. Tan graduated from Feinberg School of Medicine
Dr. Tan graduated from Feinberg School of Medicine in 1994. Dr. Tan is a member of ACS and ASPS.
- Medical school
- Board certified in plastic surgery
Source: Dmand AI Professional Profile Data
Dr. Mark C. Tan accepts plans from 10 insurance carriers
Dr. Tan is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- HCSC
- Humana
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +2 more carriersWith a free account
Plan types Dr. Tan accepts, by number of carriers
- Medicare9
- PPO7
- HMO6
- POS5
- EPO3
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark C. Tan'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) |
| 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) |
| 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. Mark C. Tan
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. Mark C. Tan's NPI number?
Dr. Mark C. Tan's NPI number is 1578658266. It was assigned on October 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark C. Tan?
Dr. Mark C. Tan is an ophthalmic plastic and reconstructive surgery physician in Chicago, Illinois. The primary specialty in the NPI Registry is Ophthalmic Plastic and Reconstructive Surgery Physician (taxonomy code 207WX0200X).
Where does Dr. Mark C. Tan practice?
Dr. Tan practices at 5841 S Maryland Ave, Chicago, IL 60637. Dr. Tan's primary practice is The University of Chicago Medical Center in Chicago, Illinois. Dmand AI also links Dr. Tan to 2 hospitals, 2 medical groups and 1 group practice or clinic.
What is Dr. Mark C. Tan's office phone number?
The practice phone on file for Dr. Tan is (773) 702-1530.
What is Dr. Mark C. Tan's medical license number?
Dr. Tan's California license number on file is A94624, one of the licenses on file in 6 states.
Which states has Dr. Mark C. Tan been licensed in?
Dmand AI has state licenses on file for Dr. Tan in California (2006 to 2025), Illinois (2002 to 2026), Texas (2001 to 2026), Indiana (2023 to 2025), Ohio (2000 to 2001) and New York (1997 to 1999).
Which hospitals is Dr. Mark C. Tan affiliated with?
Dr. Tan is affiliated with University of Chicago Medical Center. Dmand AI links Dr. Tan to 2 more hospitals.
What medical group is Dr. Mark C. Tan part of?
Dr. Tan is linked to UChicago Medicine Physicians. Dmand AI links Dr. Tan to 2 more medical groups.
Does Dr. Mark C. Tan accept Medicare?
Yes. CMS data shows Dr. Tan billed Medicare for 22 services in 2024, and Dr. Tan accepts Medicare assignment.
How many Medicare patients does Dr. Mark C. Tan see?
CMS counts 46 Medicare patients who saw Dr. Tan in 2024, with an average age of 70.
Show 6 more questionsShow fewer questions
Is Dr. Mark C. Tan board certified?
Yes. Dr. Tan is board certified in plastic surgery by the American Board of Plastic Surgery.
What services does Dr. Mark C. Tan bill to Medicare?
In 2024, Dr. Tan's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Mark C. Tan go to medical school?
Dr. Tan graduated from Feinberg School of Medicine in 1994.
Has Dr. Mark C. Tan received payments from drug or device companies?
CMS Open Payments shows $1,998 in general payments to Dr. Tan from 12 companies from 2016 to 2025. The largest total came from Sientra, Inc.
How long has Dr. Mark C. Tan been practicing?
Dr. Tan graduated from medical school in 1994, 32 years ago.
What insurance does Dr. Mark C. Tan accept?
Dr. Tan is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.
Selling to ophthalmic plastic and reconstructive surgery practices?
See ophthalmic plastics and reconstructive surgery physicians 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