Individual provider Active NPI

Andrew Hallmark

  • Anesthesiology Physician
  • Chicago, IL
National Provider Identifier
1255992855
Registry record updated Apr 6, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
A192127 Issued in CA
Practice address
251 E Huron St
Chicago, IL 60611-2908
Phone
(630) 933-4800
NPI assigned
Jun 25, 2019
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 6, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X A192127 CA Primary
Student in an Organized Health Care Education/Training Program 390200000X 4351044182 MI
Anesthesiology Physician 207L00000X 036.164135 IL

Addresses

Primary practice location

251 E Huron St
Chicago, IL 60611-2908

Mailing address

450 Mamaroneck Ave Ste 201
Harrison, NY 10528-2436
Phone (909) 742-2689

Other practice location 1

2101 N Waterman Ave
San Bernardino, CA 92404-4836
Phone (909) 883-8711

Other practice location 2

U of M Department of Anesthesiology
1500 E Medical Ctr 1H241 UH
Ann Arbor, MI 48109-5048
Phone (734) 936-4280

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20240618004306 CA Practitioner - Anesthesiology 9234464579 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
University of Florida College of Medicine, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Palm Springs Anesthesia Services PCGroup PAC ID 6406049592, 90 clinicians

Practice addresses (Care Compare)

11234 Anderson St
Loma Linda, CA 92354-2804

11370 Anderson St
Loma Linda, CA 92354-3450

12401 Washington Blvd
Whittier, CA 90602-1006
Phone (562) 698-0811

2101 N Waterman Ave
San Bernardino, CA 92404-4836
Phone (760) 449-5391

26780 Barton Rd
Redlands, CA 92373-4308
Phone (909) 558-5174

File Number
Suite 54701
Los Angeles, CA 90074-4701

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
88.87 of 100Reported as group
Quality
72.13
Promoting interoperability
80
Improvement activities
40
Cost
77.36

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
A192127CAMDAnesthesiology Physician
036.164135ILMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Obstetric Anesthesia Associates Inc Anesthesiology CurrentSince Jul 17, 2024 Accepting new patients
Faculty Physicians and Surgeons of Llusm Current Accepting new patients
Palm Springs Anesthesia Services, PC Anesthesiology CurrentSince Dec 1, 2025 Accepting new patients
Faculty Physicians and Surgeons of Llusm CurrentSince Aug 1, 2024 Accepting new patients
Faculty Physicians and Surgeons of Llusm Anesthesiology CurrentSince Aug 1, 2024 Accepting new patients
Faculty Physicians and Surgeons of Llusm Past Accepting new patients

Locations

2309 Antonio Ave
Camarillo, CA 93010
Phone (805) 389-5655

11234 Anderson St
Loma Linda, CA 92350
Phone (909) 558-3016

11370 Anderson St
#B100
Loma Linda, CA 92354
Phone (909) 558-2848

1050 Linden Ave
Long Beach, CA 90813
Phone (562) 491-9000

File Number 54701
Los Angeles, CA 90074
Phone (909) 651-4300

1600 N Rose Ave
Oxnard, CA 93030
Phone (805) 988-2500

1150 N Indian Canyon Dr
Palm Springs, CA 92262
Phone (760) 323-6251

3762 Tibbetts St
Riverside, CA 92506
Phone (951) 686-2224

2101 N Waterman Ave
Sn Bernrdno, CA 92404
Phone (909) 881-4305

415 E Harding Way
Ste E
Stockton, CA 95204
Phone (209) 337-4935

12401 Washington Blvd
Whittier, CA 90602
Phone (562) 698-0611

450 Mamaroneck Ave
Ste 201
Harrison, NY 10528
Phone (877) 476-6642

Organizations & group practices 6

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1561420800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775433600000",
    "number": "1255992855",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "450 MAMARONECK AVE STE 201",
            "city": "HARRISON",
            "state": "NY",
            "postal_code": "105282436",
            "telephone_number": "909-742-2689"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "251 E HURON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606112908",
            "telephone_number": "630-933-4800"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2101 N Waterman Ave",
            "address_purpose": "LOCATION",
            "city": "San Bernardino",
            "state": "CA",
            "postal_code": "924044836",
            "country_code": "US",
            "telephone_number": "909-883-8711",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "U of M Department of Anesthesiology",
            "address_2": "1500 E Medical Ctr 1H241 UH",
            "address_purpose": "LOCATION",
            "city": "Ann Arbor",
            "state": "MI",
            "postal_code": "481095048",
            "country_code": "US",
            "telephone_number": "734-936-4280",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HALLMARK",
        "first_name": "ANDREW",
        "name_prefix": "Dr.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-06-25",
        "last_updated": "2026-04-06",
        "certification_date": "2026-04-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "CA",
            "license": "A192127",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "MI",
            "license": "4351044182",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "IL",
            "license": "036.164135",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

Verify at the official NPI Registry.