Individual provider Active NPI

John William Stelzer, MD

  • Pediatric Orthopaedic Surgery Physician
  • Philadelphia, PA
National Provider Identifier
1225599004
Registry record updated Aug 6, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatric Orthopaedic Surgery PhysicianTaxonomy code 207XP3100X
License
79207 Issued in CT
Practice address
3401 Civic Center Blvd
Division of Pediatric Orthopaedic Surgery
Philadelphia, PA 19104
Phone
(267) 590-1527
NPI assigned
Mar 26, 2019
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 6, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatric Orthopaedic Surgery Physician 207XP3100X 79207 CT Primary

Addresses

Primary practice location

3401 Civic Center Blvd
Division of Pediatric Orthopaedic Surgery
Philadelphia, PA 19104

Mailing address

282 Washington St
Hartford, CT 06106-3322
Phone (860) 545-9000

Other practice location 1

282 Washington St
Hartford, CT 06106-3322
Phone (860) 545-9000

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250509002752 CT Practitioner - Orthopedic Surgery 4385974583 Reassigns benefits to 1 organization

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Connecticut Children'S Specialty Group, Inc. CurrentSince Apr 29, 2025 Accepting new patients
Connecticut Children'S Specialty Group, Inc. CurrentSince Apr 29, 2025 Accepting new patients
Connecticut Children'S Medical Center Past Accepting new patients

Locations

105 Newtown Rd
#A
Danbury, CT 06810
Phone (860) 545-9395

263 Farmington Ave
Farmington, CT 06030
Phone (860) 679-4477

505 Farmington Ave
Farmington, CT 06032
Phone (860) 837-6700

399 Farmington Ave
Fl 3
Farmington, CT 06032
Phone (860) 284-0235

399 Farmington Ave
Ste 300
Farmington, CT 06032
Phone (860) 284-0220

310 Western Blvd
Glastonbury, CT 06033
Phone (860) 837-9877

10 Columbus Blvd
Fl 4
Hartford, CT 06106
Phone (860) 837-5560

10 Columbus Blvd
Hartford, CT 06106
Phone (860) 837-5619

31 Seymour St
Fl 4
Hartford, CT 06106

282 Washington St
Hartford, CT 06106
Phone (860) 545-8950

1281 E Main St
Ste 3
Stamford, CT 06902
Phone (860) 545-9200

191 Post Rd W
#1
Westport, CT 06880

Organizations & group practices 3

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.

NPI Registry JSON

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

{
    "created_epoch": "1553558400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754438400000",
    "number": "1225599004",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "282 WASHINGTON ST",
            "city": "HARTFORD",
            "state": "CT",
            "postal_code": "061063322",
            "telephone_number": "860-545-9000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3401 CIVIC CENTER BLVD",
            "address_2": "DIVISION OF PEDIATRIC ORTHOPAEDIC SURGERY",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "19104",
            "telephone_number": "267-590-1527"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "282 Washington St",
            "address_purpose": "LOCATION",
            "city": "Hartford",
            "state": "CT",
            "postal_code": "061063322",
            "country_code": "US",
            "telephone_number": "860-545-9000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "STELZER",
        "first_name": "JOHN",
        "middle_name": "WILLIAM",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-26",
        "last_updated": "2025-08-06",
        "certification_date": "2025-08-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207XP3100X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Pediatric Orthopaedic Surgery",
            "state": "CT",
            "license": "79207",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Philadelphia, PA

Sources for this page

Verify at the official NPI Registry.