NPIMap

Individual provider Active NPI

Chelsea Dianne Gawryletz, DO

  • Medical Oncology Physician
  • Fort Collins, CO
National Provider Identifier
1801180351
Registry record updated Feb 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Oncology PhysicianTaxonomy code 207RX0202X
License
DR.0060206 Issued in CO
Practice address
2121 E Harmony Rd Unit 170
Fort Collins, CO 80528-3413
Phone
(970) 493-6337
Fax
(970) 493-3528
NPI assigned
Jun 1, 2011
Last updated
Feb 3, 2026By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Feb 3, 2026

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 R1925 AZ
Medical Oncology Physician 207RX0202X DR.0060206 CO Primary

Addresses

Primary practice location

2121 E Harmony Rd Unit 170
Fort Collins, CO 80528-3413

Mailing address

2121 E Harmony Rd Unit 170
Fort Collins, CO 80528-3413
Phone (970) 493-6337

Other identifiers 1

IdentifierTypeStateIssuer
9000159977MedicaidCO

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX, CO2 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
I20140908000689 TX Practitioner - Hematology/OncologyPractitioner - Internal Medicine 2163640053 Reassigns benefits to 1 organization
I20180502002571 CO Practitioner - Hematology/OncologyPractitioner - Internal Medicine 2163640053 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/OncologyAlso: Internal Medicine
Education
Other, 2011
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Poudre Valley Medical Group LLCGroup PAC ID 9638208549, 2,425 clinicians

Practice addresses (Care Compare)

2121 E Harmony Rd
Unit 170 Uchmg Cancer Care and Hem FC
Fort Collins, CO 80528-3413
Phone (970) 493-6337

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
R1925AZMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Intermountain Medical Group Denver, LLC Internal Medicine Current Accepting new patients
Intermountain Medical Group Denver, LLC CurrentSince Nov 18, 2018 Accepting new patients
Dhew Ind HLTH SV HLTH SVS & MNTL HLTH Adm CurrentSince Jul 27, 2014 Accepting new patients
Poudre Valley Medical Group, LLC CurrentSince Jun 3, 2022 Accepting new patients
Poudre Valley Medical Group, LLC CurrentSince Jun 3, 2022 Accepting new patients
Dhew Ind HLTH SV HLTH SVS & MNTL HLTH Adm CurrentSince Jul 27, 2014 Accepting new patients
Intermountain Medical Group Denver, LLC CurrentSince Nov 18, 2018 Accepting new patients

Locations

4212 N 16th St
Phoenix, AZ 85016
Phone (602) 248-4187

1375 E 19th Ave
Denver, CO 80218
Phone (303) 812-2000

1825 N Marion St
Denver, CO 80218
Phone (303) 318-3434

4859 Yampa St
Denver, CO 80249
Phone (303) 498-1885

2121 E Harmony Rd
Unit 170
Fort Collins, CO 80528
Phone (970) 493-6337

6767 29th St
Greeley, CO 80634
Phone (970) 652-2000

6767 29th St
Fl 1
Greeley, CO 80634
Phone (970) 652-2477

200 Exempla Cir
Lafayette, CO 80026
Phone (303) 689-4110

2500 Rocky Mountain Ave
Ste 2100
Loveland, CO 80538
Phone (970) 203-7080

2500 Rocky Mountain Ave
Ste 2100UCHMG
Loveland, CO 80538
Phone (970) 203-7000

2695 Rocky Mountain Ave
Ste 150
Loveland, CO 80538
Phone (970) 624-2412

3550 Lutheran Pkwy
Ste 100A
Wheat Ridge, CO 80033
Phone (303) 403-7333

Organizations & group practices 7

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 20

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

View all 20

NPI Registry JSON

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

{
    "created_epoch": "1306886400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770076800000",
    "number": "1801180351",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2121 E HARMONY RD UNIT 170",
            "city": "FORT COLLINS",
            "state": "CO",
            "postal_code": "805283413",
            "telephone_number": "970-493-6337",
            "fax_number": "970-493-3528"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2121 E HARMONY RD UNIT 170",
            "city": "FORT COLLINS",
            "state": "CO",
            "postal_code": "805283413",
            "telephone_number": "970-493-6337",
            "fax_number": "970-493-3528"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GAWRYLETZ",
        "first_name": "CHELSEA",
        "middle_name": "DIANNE",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2011-06-01",
        "last_updated": "2026-02-03",
        "certification_date": "2026-02-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "AZ",
            "license": "R1925",
            "primary": false
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "CO",
            "license": "DR.0060206",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "9000159977",
            "state": "CO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Fort Collins, CO

Sources for this page

Verify at the official NPI Registry.