NPIMap

Individual provider Active NPI

Mark B. Lorenz, MD

  • Otolaryngology Physician
  • Anchorage, AK
National Provider Identifier
1174649784
Registry record updated May 15, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Otolaryngology PhysicianTaxonomy code 207Y00000X
License
MEDS7379 Issued in AK
Practice address
3730 Rhone Cir Ste 203
Anchorage, AK 99508-5054
Phone
(907) 563-3515
Fax
(907) 563-3541
NPI assigned
Mar 22, 2007
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 15, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Otology & Neurotology Physician 207YX0901X MEDS7379 AK
Otolaryngology Physician 207Y00000X MEDS7379 AK Primary

Addresses

Primary practice location

3730 Rhone Cir Ste 203
Anchorage, AK 99508-5054

Mailing address

3730 Rhone Cir Ste 203
Anchorage, AK 99508-5054
Phone (907) 563-3515

Other identifiers 1

IdentifierTypeStateIssuer
1577654MedicaidAK

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX, AK2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20120611000442 TX Practitioner - Otolaryngology 0042474603 Reassigns benefits to 2 organizations
I20150421000041 AK Practitioner - Otolaryngology 0042474603 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Otolaryngology
Education
Ohio State University College of Medicine, 2005
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Alaska Native Tribal Health ConsortiumGroup PAC ID 6709780265, 605 clinicians
Ear Nose and Throat Specialists Alaska, IncGroup PAC ID 6204848294, 12 clinicians

Practice addresses (Care Compare)

3801 University Lake Dr
Anchorage, AK 99508-4658
Phone (907) 563-2662

3831 Piper St
Suite S433
Anchorage, AK 99508-6900
Phone (907) 561-1471

3900 Ambassador Dr
Anchorage, AK 99508-5922
Phone (907) 563-2662

4315 Diplomacy Dr
Anchorage, AK 99508-5926
Phone (907) 563-2662

Hospital & facility affiliations

  • Providence Alaska Medical Center Hospital, Anchorage, AK, CCN 020001
  • Alaska Native Medical Center Hospital, Anchorage, AK, CCN 020026
  • Fairbanks Memorial Hospital Hospital, Fairbanks, AK, CCN 020012

Merit-based Incentive Payment System (MIPS)

Final score
70.59 of 100Reported as group
Quality
83.37
Promoting interoperability
100
Improvement activities
40
Cost
16.65

Merit-based Incentive Payment System (MIPS)

Final score
90.93 of 100Reported as group
Quality
70.1
Promoting interoperability
100
Improvement activities
40
Cost
83.01

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MEDS7379AKMDOtolaryngology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Bristol Bay Area Health Corporation Current Accepting new patients
Alaska Native Tribal Health Consortium CurrentSince Jul 23, 2012 Accepting new patients
Geneva Woods Ear, Nose and Throat Associates, Inc. Otolaryngology CurrentSince Jun 25, 2023 Accepting new patients
South Peninsula Hospital, Inc. CurrentSince Mar 23, 2017 Accepting new patients
South Peninsula Hospital, Inc CurrentSince Mar 23, 2017 Accepting new patients
Ear, Nose and Throat Specialists Alaska, Inc. CurrentSince Aug 1, 2023 Accepting new patients
Bristol Bay Area Health Corporation CurrentSince Jan 2, 2015 Accepting new patients
Bristol Bay Area Health Corporation CurrentSince Jan 2, 2015 Accepting new patients

Locations

4315 Diplomacy Dr
Anchorage, AK 99508
Phone (907) 729-1729

3801 University Lake Dr
Fl 2
Anchorage, AK 99508
Phone (646) 506-3297

3730 Rhone Cir
Ste 203
Anchorage, AK 99508
Phone (907) 563-3515

3831 Piper St
Ste S433
Anchorage, AK 99508
Phone (907) 561-1421

4300 Bartlett St
Homer, AK 99603
Phone (907) 235-0369

Organizations & group practices 8

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 15

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

View all 15

NPI Registry JSON

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

{
    "created_epoch": "1174521600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778803200000",
    "number": "1174649784",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3730 RHONE CIR STE 203",
            "city": "ANCHORAGE",
            "state": "AK",
            "postal_code": "995085054",
            "telephone_number": "907-563-3515",
            "fax_number": "907-563-3541"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3730 RHONE CIR STE 203",
            "city": "ANCHORAGE",
            "state": "AK",
            "postal_code": "995085054",
            "telephone_number": "907-563-3515",
            "fax_number": "907-563-3541"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LORENZ",
        "first_name": "MARK",
        "middle_name": "B.",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-03-22",
        "last_updated": "2026-05-15",
        "certification_date": "2026-05-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207YX0901X",
            "taxonomy_group": "",
            "desc": "Otolaryngology, Otology & Neurotology",
            "state": "AK",
            "license": "MEDS7379",
            "primary": false
        },
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "AK",
            "license": "MEDS7379",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1577654",
            "state": "AK"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Anchorage, AK

Sources for this page

Verify at the official NPI Registry.