Mark D. Sack, DPM
- Medicare patients, 2024
- 245
- Part D claims, 2024
- 62
- Hospital affiliations
- 2
- Industry payments
- $243
- Medical group
- 1
- Practice address
- 3216 W 115th St, Chicago, IL 60655
- Practice phone
- Call (773) 238-7270
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mark Sack DPM
Chicago, Illinois
Find Mark Sack'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.
Mark D. Sack is a podiatric surgeon in Chicago, Illinois
Mark Sack practices at Mark Sack DPM in Chicago, Illinois.
Mark Sack's NPI, 1548286313, was assigned on July 14, 2006. Mark Sack holds Illinois license 016005080.
- NPI
- 1548286313NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537156542
- NPI enumeration date
- July 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 238-7270
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark D. Sack practices at Mark Sack DPM in Chicago, Illinois
Mark Sack's primary practice is Mark Sack DPM, at 3216 W 115th St, Chicago, IL 60655 in Cook County. The practice phone is (773) 238-7270.
- Mark Sack DPM3216 W 115th St, Chicago, IL 60655 · Cook CountyPhone(773) 238-7270
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mark D. Sack is affiliated with 5 sites of care and 1 medical group
Mark Sack's primary practice is Mark Sack DPM in Chicago, Illinois. Mark Sack is also affiliated with Advocate Christ Medical Center. The medical group on file is Bartlett Foot Center. Dmand AI also links Mark Sack to 1 more hospital, 1 physician office and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Mark D. Sack's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Sack practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mark Sack DPM | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Mark D. Sack is one of 472 podiatric surgeons in Illinois
Foot and ankle surgery is Mark Sack's primary specialty in the NPI Registry, under taxonomy code 213ES0103X. Mark Sack is licensed in Illinois.
Specialties and state licenses
- Foot and ankle surgery podiatrist, IllinoisPrimary
Podiatric surgeons near Mark Sack
Counts of podiatric 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
Mark D. Sack treated 245 Medicare patients in 2024, average age 75
CMS counts 245 Medicare patients who saw Mark Sack in 2024. The largest group is 65 to 74, with 96 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 1.53, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Mark Sack's median patient age at 64, with 54% women.
Mark Sack's Medicare patients by age, 2024
Mark Sack's Medicare patients by sex, 2024
- Women14459%
- Men10141%
Chronic conditions among Mark Sack's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis45%
- Diabetes37%
- Chronic kidney disease30%
- Ischemic heart disease29%
- Heart failure22%
- Atrial fibrillation21%
Share of Medicare patients with each condition. A patient can have several.
Mark Sack's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women54%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark D. Sack wrote 62 Medicare Part D claims in 2024
In 2024, Mark Sack wrote 62 Medicare Part D claims for 34 patients. 100% of them were for generic drugs.
Drug classes CMS tracks in Mark Sack's Part D claims, 2024
- Antibiotics35%22 of 62 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Mark D. Sack ranks in the 84th percentile for removal of tissue in Medicare
Mark Sack accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 91 procedures of removal of tissue by Mark Sack, more than 84% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Mark Sack ranks in Medicare procedure volume
- Removal of nail tissue
- 79th percentile319 procedures
- Removal of tissue
- 84th percentile91 procedures
- Removal or shaving of skin growth
- 76th percentile35 procedures
- Removal of skin lesions
- 69th percentile33 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Mark D. Sack received $243 in industry payments in 2025
CMS Open Payments shows 5 general payments to Mark Sack from 4 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Organogenesis Inc. paid the most, $130.
Companies that paid Mark Sack the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Mark D. Sack'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 Data |
| 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 (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) |
| 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 Mark D. Sack
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark D. Sack's NPI number?
Mark D. Sack's NPI number is 1548286313. It was assigned on July 14, 2006, and it is active in the NPI Registry.
What does Mark D. Sack specialize in?
Mark D. Sack is a podiatric surgeon in Chicago, Illinois. The primary specialty in the NPI Registry is Foot & Ankle Surgery Podiatrist (taxonomy code 213ES0103X).
Where does Mark D. Sack practice?
Mark Sack practices at 3216 W 115th St, Chicago, IL 60655. Mark Sack's primary practice is Mark Sack DPM in Chicago, Illinois. Dmand AI also links Mark Sack to 1 hospital, 1 physician office and 1 group practice or clinic.
What is Mark D. Sack's office phone number?
The practice phone on file for Mark Sack is (773) 238-7270.
What is Mark D. Sack's medical license number?
Mark Sack holds Illinois license 016005080.
Which hospitals is Mark D. Sack affiliated with?
Mark Sack is affiliated with Advocate Christ Medical Center. Dmand AI links Mark Sack to 1 more hospital.
What medical group is Mark D. Sack part of?
Mark Sack is linked to Bartlett Foot Center.
Does Mark D. Sack accept Medicare?
Yes. CMS lists Mark Sack as accepting Medicare assignment.
How many Medicare patients does Mark D. Sack see?
CMS counts 245 Medicare patients who saw Mark Sack in 2024, with an average age of 75.
Has Mark D. Sack received payments from drug or device companies?
CMS Open Payments shows $243 in general payments to Mark Sack from 4 companies from 2025 to 2025. The largest total came from Organogenesis Inc.
How long has Mark D. Sack been practicing?
Mark Sack graduated from medical school in 1999, 27 years ago.
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