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Individual provider Active NPI

Diane Katherine Gomez, MD

  • Hospitalist Physician
  • Lakewood, CO
National Provider Identifier
1285836304
Registry record updated Sep 10, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hospitalist PhysicianTaxonomy code 208M00000X
License
DR.0048983 Issued in CO
Practice address
11600 W 2ND PL
Lakewood, CO 80228-1527
Phone
(720) 321-0000
Fax
(720) 321-1759
NPI assigned
Jun 1, 2007
Last updated
Sep 10, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 10, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 48983 CO
Hospitalist Physician 208M00000X DR.0048983 CO Primary

Addresses

Primary practice location

11600 W 2ND PL
Lakewood, CO 80228-1527

Mailing address

PO Box 800022
Kansas City, MO 64180-0022
Phone (800) 953-0104

Other names 1

  • Diane Katherine Maassen Former name

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
I20100825000044 CO Practitioner - HospitalistPractitioner - Internal Medicine 2163546367 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Internal Medicine
Education
University of Missouri, Kansas City, School of Medicine, 2006
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Catholic Health Initiatives ColoradoGroup PAC ID 8022927342, 1,230 clinicians

Practice addresses (Care Compare)

11600 W 2ND PL
Lakewood, CO 80228-1527

11650 W 2ND PL
Lakewood, CO 80228-1527

14300 Orchard Pkwy
Westminster, CO 80023-9206
Phone (720) 627-0207

14300 Orchard Pkwy Floor 2 Pod
1 Ornh Pain Specialists
Westminster, CO 80023-9206
Phone (303) 661-4100

1950 Mountain View Ave
Longmont, CO 80501-3129
Phone (303) 651-5300

2222 N Nevada Ave
Colorado Springs, CO 80907-6819

41 State Hwy 67
Woodland Park, CO 80863-5008
Phone (719) 776-4780

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
89.06 of 100Reported as group
Quality
89.53
Promoting interoperability
100
Improvement activities
40
Cost
74

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
48983COMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Portercare Adventist Health System CurrentSince Jul 1, 2015 Accepting new patients
Catholic Health Initiatives Colorado Current Accepting new patients
Inpatient Services, PC Internal Medicine CurrentSince Jun 20, 2010 Accepting new patients
Catholic Health Initiatives Colorado CurrentSince May 1, 2018 Accepting new patients
Inpatient Services, PC Internal Medicine CurrentSince Jun 20, 2010 Accepting new patients
Portercare Adventist Health System Current Accepting new patients
Catholic Health Initiatives Colorado CurrentSince May 1, 2018 Accepting new patients
Portercare Adventist Health System CurrentSince Jul 1, 2015 Accepting new patients
Catholic Health Initiatives Colorado Past Accepting new patients
Total Longterm Care, Inc Past Accepting new patients

Locations

9100 E Mineral Cir
Centennial, CO 80112
Phone (303) 561-5193

2525 S Downing St
Denver, CO 80210
Phone (303) 744-2706

11600 W 2nd Pl
Lakewood, CO 80228
Phone (720) 321-1010

11700 W 2nd Pl
Ste 210
Lakewood, CO 80228
Phone (720) 321-8080

7750 S Broadway
Ste 260
Littleton, CO 80122
Phone (303) 734-8650

8300 W 38th Ave
Wheat Ridge, CO 80033
Phone (303) 425-2015

41 State Highway 67
Woodland Park, CO 80863
Phone (719) 686-0551

Organizations & group practices 10

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

Hospital & facility affiliations 4

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": "1180656000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757462400000",
    "number": "1285836304",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 800022",
            "city": "KANSAS CITY",
            "state": "MO",
            "postal_code": "641800022",
            "telephone_number": "800-953-0104",
            "fax_number": "303-765-6670"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11600 W 2ND PL",
            "city": "LAKEWOOD",
            "state": "CO",
            "postal_code": "802281527",
            "telephone_number": "720-321-0000",
            "fax_number": "720-321-1759"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GOMEZ",
        "first_name": "DIANE",
        "middle_name": "KATHERINE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-06-01",
        "last_updated": "2025-09-10",
        "certification_date": "2025-09-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CO",
            "license": "48983",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "CO",
            "license": "DR.0048983",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "DIANE",
            "last_name": "MAASSEN",
            "middle_name": "KATHERINE",
            "credential": "MD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Lakewood, CO

Sources for this page

Verify at the official NPI Registry.