Gabriel Martinez-Diaz, M.D.
NPI 1245556695 · Dermatology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gabriel Martinez-Diaz, M.D. is a Dermatology Physician provider in Chicago, IL (NPI 1245556695).
Provider details
- NPI number
- 1245556695
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036138747 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
16 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- 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.
$932 across 44 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
Additional practice locations (1)
- 4885 Hoffman Blvd # 407Hoffman Estates, IL 60192-3726Phone: (224) 484-0183Fax: (224) 699-9301
Registry dates
- Enumerated
- 2010-04-09
- Last updated
- 2022-07-21
- Certified
- 2021-12-06
Frequently asked questions
- What is Gabriel Martinez-Diaz's NPI number?
- Gabriel Martinez-Diaz's National Provider Identifier (NPI) is 1245556695, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gabriel Martinez-Diaz's specialty?
- Gabriel Martinez-Diaz is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Gabriel Martinez-Diaz located?
- Gabriel Martinez-Diaz's practice location on file with NPPES is 1021 W. Adams St., Chicago, IL 60607.
- What is Gabriel Martinez-Diaz's phone number?
- The practice phone number listed in the NPPES registry for Gabriel Martinez-Diaz is (312) 579-0700.
- Does Gabriel Martinez-Diaz accept Medicare?
- Gabriel Martinez-Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gabriel Martinez-Diaz's NPI active?
- Yes — Gabriel Martinez-Diaz's NPI (1245556695) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.