NPIMap

Individual provider Active NPI

William Roberts Howarth, M.D.

  • Orthopaedic Surgery Physician
  • New Haven, CT
National Provider Identifier
1841463882
Registry record updated Sep 25, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
License
86571 Issued in CT
Practice address
333 Cedar St
New Haven, CT 06510-3206
Phone
(203) 785-7727
NPI assigned
Apr 10, 2008
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 25, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X 01067243A IN
Orthopaedic Surgery Physician 207X00000X DR.0052868 CO
Orthopaedic Surgery Physician 207X00000X 86571 CT Primary

Addresses

Primary practice location

333 Cedar St
New Haven, CT 06510-3206

Mailing address

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

Other practice location 1

4925 N Nevada Ave
Colorado Springs, CO 80918-8600
Phone (719) 776-3750

Other practice location 2

4102 Pinion Dr
Usaf Academy, CO 80840-2502
Phone (719) 333-5042

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
I20140403000809 CO Practitioner - Orthopedic Surgery 5698909281 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
Uniformed Services Uhs Fe Hebert School of Med, 2008
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Catholic Health Initiatives ColoradoGroup PAC ID 8022927342, 1,230 clinicians
Select Physical Therapy of West Denver Limited PartnershipGroup PAC ID 6709771157, shared by 5 NPIs, 530 clinicians

Practice addresses (Care Compare)

10860 New Allegiance Dr
Colorado Springs, CO 80921-3794
Phone (719) 776-8040

2222 N Nevada Ave
Colorado Springs, CO 80907-6819

3010 N Circle Dr
100 Orco Ortho Audubn CMG
Colorado Springs, CO 80909-1174
Phone (719) 776-7846

406 E Grace Ave
Woodland Park, CO 80863-3127
Phone (719) 687-3767

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

4925 N Nevada Ave
Colorado Springs, CO 80918-8600

6001 E Woodman Rd
Colorado Springs, CO 80923-2601
Phone (719) 776-8040

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Hip replacement123
Knee replacement101
Lower limb (leg) arthroscopy (minimally invasive joint repair)25
Upper limb (arm) arthroscopy (minimally invasive joint repair)17
Removal of tissue1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
DR.0052868COMDOrthopaedic Surgery Physician
01067243AINMDOrthopaedic Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Catholic Health Initiatives Colorado Orthopaedic Surgery CurrentSince Mar 15, 2021 Accepting new patients
Orthopaedics of Steamboat Springs PC Orthopaedic Surgery CurrentSince Jul 22, 2020 Accepting new patients
Catholic Health Initiatives Colorado Current Accepting new patients
Catholic Health Initiatives Colorado CurrentSince Mar 15, 2021 Accepting new patients
Catholic Health Initiatives Colorado Past Accepting new patients
Catholic Health Initiatives Colorado Past Accepting new patients
East Morgan County Hospital Past Accepting new patients

Locations

17230 Jackson Creek Pkwy
Ste 260
Monument, CO 80132
Phone (719) 301-3010

705 Marketplace Plz
Steamboat Springs, CO 80487
Phone (970) 439-0800

705 Marketplace Plz
Ste 200
Steamboat Springs, CO 80487
Phone (970) 439-0800

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

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 8

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": "1207785600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790294400000",
    "number": "1841463882",
    "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"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "333 CEDAR ST",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103206",
            "telephone_number": "203-785-7727"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4925 N Nevada Ave",
            "address_purpose": "LOCATION",
            "city": "Colorado Springs",
            "state": "CO",
            "postal_code": "809188600",
            "country_code": "US",
            "telephone_number": "719-776-3750",
            "fax_number": "719-776-3751",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4102 Pinion Dr",
            "address_purpose": "LOCATION",
            "city": "Usaf Academy",
            "state": "CO",
            "postal_code": "808402502",
            "country_code": "US",
            "telephone_number": "719-333-5042",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HOWARTH",
        "first_name": "WILLIAM",
        "middle_name": "ROBERTS",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-04-10",
        "last_updated": "2026-09-25",
        "certification_date": "2026-09-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "IN",
            "license": "01067243A",
            "primary": false
        },
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "CO",
            "license": "DR.0052868",
            "primary": false
        },
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "CT",
            "license": "86571",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New Haven, CT

Sources for this page

Verify at the official NPI Registry.