Gregory Makar, DO
NPI 1881042091 · Medical Toxicology (Emergency Medicine) Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Makar, DO is a Medical Toxicology (Emergency Medicine) Physician provider in Phoenix, AZ (NPI 1881042091).
Provider details
- NPI number
- 1881042091
- Entity type
- Individual
- Primary specialty
- Medical Toxicology (Emergency Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 008732 (AZ)
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 tenure38% of score
10 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
- 2016-05-27
- Last updated
- 2024-02-12
- Certified
- 2024-02-12
Frequently asked questions
- What is Gregory Makar's NPI number?
- Gregory Makar's National Provider Identifier (NPI) is 1881042091, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Makar's specialty?
- Gregory Makar is listed in the NPPES registry with a primary specialty of Medical Toxicology (Emergency Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Makar located?
- Gregory Makar's practice location on file with NPPES is 1111 E Mcdowell Rd, Building a, Phoenix, AZ 85006.
- What is Gregory Makar's phone number?
- The practice phone number listed in the NPPES registry for Gregory Makar is (303) 929-0141.
- Does Gregory Makar accept Medicare?
- Gregory Makar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Makar's NPI active?
- Yes — Gregory Makar's NPI (1881042091) is active in the NPPES registry as of the last update on 2024-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.