Mark Sack DPM PC
NPI 1902839194 · Foot & Ankle Surgery Podiatrist · Chicago, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Sack DPM PC is a Foot & Ankle Surgery Podiatrist organization in Chicago, IL (NPI 1902839194).
Provider details
- NPI number
- 1902839194
- Entity type
- Organization
- Primary specialty
- Foot & Ankle Surgery PodiatristPodiatric Medicine & Surgery Service Providers
- Organization subpart
- No
- Authorized official
- Mark Sack, President(773) 238-7270
Specialties & taxonomies
Podiatric Medicine & Surgery Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-09
- Last updated
- 2020-05-22
- Certified
- 2020-05-22
Frequently asked questions
- What is Mark Sack DPM PC's NPI number?
- Mark Sack DPM PC's National Provider Identifier (NPI) is 1902839194, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark Sack DPM PC?
- Mark Sack DPM PC is classified in the NPPES registry as Foot & Ankle Surgery Podiatrist (Podiatric Medicine & Surgery Service Providers).
- Where is Mark Sack DPM PC located?
- Mark Sack DPM PC's practice location on file with NPPES is 3216 W 115th St, Chicago, IL 60655-2805.
- What is Mark Sack DPM PC's phone number?
- The practice phone number listed in the NPPES registry for Mark Sack DPM PC is (773) 238-7270.
- Does Mark Sack DPM PC accept Medicare?
- Mark Sack DPM PC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Mark Sack DPM PC?
- The authorized official listed on Mark Sack DPM PC's NPPES record is Mark Sack, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark Sack DPM PC's NPI active?
- Yes — Mark Sack DPM PC's NPI (1902839194) is active in the NPPES registry as of the last update on 2020-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.