Andrew Hallmark
NPI 1255992855 · Anesthesiology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Hallmark is a Anesthesiology Physician provider in Chicago, IL (NPI 1255992855).
Provider details
- NPI number
- 1255992855
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- A192127 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 2101 N Waterman AveSan Bernardino, CA 92404-4836Phone: (909) 883-8711
- U of M Department of Anesthesiology1500 E Medical Ctr 1h241 UhAnn Arbor, MI 48109-5048Phone: (734) 936-4280
Registry dates
- Enumerated
- 2019-06-25
- Last updated
- 2026-04-06
- Certified
- 2026-04-06
Frequently asked questions
- What is Andrew Hallmark's NPI number?
- Andrew Hallmark's National Provider Identifier (NPI) is 1255992855, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Hallmark's specialty?
- Andrew Hallmark is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Hallmark located?
- Andrew Hallmark's practice location on file with NPPES is 251 E Huron St, Chicago, IL 60611-2908.
- What is Andrew Hallmark's phone number?
- The practice phone number listed in the NPPES registry for Andrew Hallmark is (630) 933-4800.
- Does Andrew Hallmark accept Medicare?
- Andrew Hallmark is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Hallmark's NPI active?
- Yes — Andrew Hallmark's NPI (1255992855) is active in the NPPES registry as of the last update on 2026-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.