NPIMap

Individual provider Active NPI

Peter J Lennarson, MD

  • Neurological Surgery Physician
  • Aurora, CO
National Provider Identifier
1013966001
Registry record updated Apr 14, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neurological Surgery PhysicianTaxonomy code 207T00000X
License
52461 Issued in CO
Practice address
12605 E 16TH Ave
Aurora, CO 80045-2545
Phone
(720) 848-0000
NPI assigned
May 8, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 14, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Neurological Surgery Physician 207T00000X 23280 NE
Neurological Surgery Physician 207T00000X 52461 CO Primary

Addresses

Primary practice location

12605 E 16TH Ave
Aurora, CO 80045-2545

Mailing address

PO Box 110429
Aurora, CO 80042-0429

Other practice location 1

2045 N Franklin St
Denver, CO 80205-5437
Phone (303) 338-4545

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20130904000291 CO Practitioner - Neurosurgery 4183669898 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Neurosurgery
Education
University of Wisconsin School of Medicine, 1995
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
University Physicians IncorporatedGroup PAC ID 3476465667, 3,189 clinicians

Practice addresses (Care Compare)

12605 E 16TH Ave
Uchealth Anschutz Medical Campus
Aurora, CO 80045-2545
Phone (720) 848-0000

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Spinal fusion243
Laminectomy or laminotomy (partial removal of spine bones)72
Removal of tissue1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
52461COMDNeurological Surgery Physician
23280NEMDNeurological Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University Physicians, Incorporated CurrentSince Aug 1, 2019 Accepting new patients
University Physicians Incorporated CurrentSince Aug 1, 2019 Accepting new patients
Denver Health and Hospital Authority CurrentSince Dec 24, 2019 Accepting new patients
Denver Health and Hospital Authority CurrentSince Dec 24, 2019 Accepting new patients
University of Colorado Hospital Authority Past Accepting new patients

Locations

12605 E 16th Ave
Aurora, CO 80045
Phone (720) 848-0006

13123 E 16th Ave
Aurora, CO 80045
Phone (720) 777-3846

2150 Stadium Dr
Boulder, CO 80309
Phone (303) 315-9900

2045 N Franklin St
Denver, CO 80205
Phone (303) 764-4666

777 Bannock St
Denver, CO 80204

Dept 1061
Denver, CO 80256

Organizations & group practices 5

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 29

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

View all 29

NPI Registry JSON

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

{
    "created_epoch": "1147046400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776124800000",
    "number": "1013966001",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 110429",
            "city": "AURORA",
            "state": "CO",
            "postal_code": "800420429"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12605 E 16TH AVE",
            "city": "AURORA",
            "state": "CO",
            "postal_code": "800452545",
            "telephone_number": "720-848-0000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2045 N Franklin St",
            "address_purpose": "LOCATION",
            "city": "Denver",
            "state": "CO",
            "postal_code": "802055437",
            "country_code": "US",
            "telephone_number": "303-338-4545",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LENNARSON",
        "first_name": "PETER",
        "middle_name": "J",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-08",
        "last_updated": "2026-04-14",
        "certification_date": "2026-04-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "NE",
            "license": "23280",
            "primary": false
        },
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "CO",
            "license": "52461",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Aurora, CO

Sources for this page

Verify at the official NPI Registry.