Thomas Sittig, APRN - FNP

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

1000520-NP Issued in CO

Practice address

340 E 1St Ave Ste 102
Broomfield, CO 80020-2454

Phone

(720) 798-0170

Fax

(303) 862-7102

NPI assigned

Feb 7, 2025

Last updated

Jun 16, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CO

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2024

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Onpoint Medical Group LLCGroup PAC ID 0143598458, 93 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Networks

• CO HMO
• devoted network organization-a4751131-f16f-4e82-8f2b-b08e66379a7a
• CO HMO D-SNP

Interoperability endpoints

• Direct secure messaging: thomas.sittig.1@9821.direct.athenahealth.com

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.

• Onpoint Medical Group, LLC

  dba OnPoint Internal Medicine @ Harvard Park

  • Internal Medicine Physician
  • Denver, CO
  • NPI 1629174826

  Family

  Medicare reassignment Care Compare group NPD
• Onpoint Medical Group, LLC

  dba OnPoint Family Medicine at Dakota Ridge

  • Family Medicine Physician
  • Littleton, CO
  • NPI 1194406025
  NPD
• Onpoint Medical Group, LLC

  dba Parker Square Family Practice

  • Family Medicine Physician
  • Parker, CO
  • NPI 1679802441
  NPD
• Onpoint Medical Group, LLC

  dba OnPoint Internal Medicine at Broomfield

  • Internal Medicine Physician
  • Broomfield, CO
  • NPI 1255177085
  NPD (past)
• Onpoint Medical Group, LLC

  dba OnPoint Internal Medicine @ Harvard Park

  • Internal Medicine Physician
  • Highlands Ranch, CO
  • NPI 1821413923
  NPD (past)

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

{
    "created_epoch": "1738886400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750032000000",
    "number": "1013722057",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1805 SHEA CENTER DR STE 450",
            "city": "HIGHLANDS RANCH",
            "state": "CO",
            "postal_code": "801292255",
            "telephone_number": "303-357-2559",
            "fax_number": "303-862-7102"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "340 E 1ST AVE STE 102",
            "city": "BROOMFIELD",
            "state": "CO",
            "postal_code": "800202454",
            "telephone_number": "720-798-0170",
            "fax_number": "303-862-7102"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "20988 E 63rd Ave",
            "address_purpose": "LOCATION",
            "city": "Aurora",
            "state": "CO",
            "postal_code": "800192334",
            "country_code": "US",
            "telephone_number": "605-610-6540",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SITTIG",
        "first_name": "THOMAS",
        "credential": "APRN - FNP",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2025-02-07",
        "last_updated": "2025-06-16",
        "certification_date": "2025-06-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CO",
            "license": "1000520-NP",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nicholas Simpson, LPC
• Breanna Singleton, CNIM
• Raman Sinha, D.P.M.
• Lauren Antonette Siracusa, PT, DPT
• Sirius Healthcare Management Inc. (TruthRx)
• Suzette Skidmore, CMT
• Skin HDC
• C. Blair Skinner, LMFT
• Katherine Colleen Sleadd, LPC
• Sleepfit, Inc

• Family Nurse Practitioner in Broomfield, CO
• Providers in Broomfield, CO by specialty
• Family Nurse Practitioner in Colorado

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 16, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.