Grace Mak
NPI 1417168717 · Surgery Physician · Chicago, IL
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Mak is a Surgery Physician provider in Chicago, IL (NPI 1417168717).
Provider details
- NPI number
- 1417168717
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 036123773 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$62 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-25
- Last updated
- 2022-10-24
Frequently asked questions
- What is Grace Mak's NPI number?
- Grace Mak's National Provider Identifier (NPI) is 1417168717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Mak's specialty?
- Grace Mak is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Grace Mak located?
- Grace Mak's practice location on file with NPPES is 5841 S Maryland Ave, Chicago, IL 60637-1443.
- What is Grace Mak's phone number?
- The practice phone number listed in the NPPES registry for Grace Mak is (888) 824-0200.
- Does Grace Mak accept Medicare?
- Grace Mak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Mak's NPI active?
- Yes — Grace Mak's NPI (1417168717) is active in the NPPES registry as of the last update on 2022-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.