NPIMap

Individual provider Active NPI

Miltiadis Holger Zgonis, MD

  • Orthopaedic Surgery Physician
  • Philadelphia, PA
National Provider Identifier
1538229117
Registry record updated Jan 21, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
License
MD437431 Issued in PA
Practice address
235 South 33Rd Street
Weightman Hall
Philadelphia, PA 19104
Phone
(215) 615-4400
NPI assigned
Dec 12, 2006
Last updated
Jan 21, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 21, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X MD437431 PA Primary

Addresses

Primary practice location

235 South 33Rd Street
Weightman Hall
Philadelphia, PA 19104

Mailing address

235 South 33Rd Street
Weightman Hall
Philadelphia, PA 19104
Phone (215) 615-4400

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in PA
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
I20130803000167 PA Practitioner - Orthopedic SurgeryPractitioner - Sports Medicine 6406098417 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic SurgeryAlso: Sports Medicine
Education
Albany Medical College of Union University, 2004
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
University of Penn-Medical GroupGroup PAC ID 6204730955, 3,433 clinicians

Practice addresses (Care Compare)

3400 Spruce St
Philadelphia, PA 19104-4238
Phone (215) 662-3340

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
84.91 of 100Reported as group
Quality
73.58
Promoting interoperability
100
Improvement activities
40
Cost
76.13

Procedures performed for Medicare patients

ProcedureNumber of procedures
Lower limb (leg) arthroscopy (minimally invasive joint repair)30
Upper limb (arm) arthroscopy (minimally invasive joint repair)1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
HHS exclusion list flag
CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
MD437431PAMDOrthopaedic Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University of Penn-Medical Group Current Accepting new patients
University of Penn-Medical Group Orthopaedic Surgery CurrentSince Apr 1, 2015 Accepting new patients
University of Penn-Medical Group CurrentSince Apr 1, 2015 Accepting new patients
University of Penn - Medical Group Past Accepting new patients

Locations

235 S 33rd St
Philadelphia, PA 19104
Phone (215) 615-4400

3400 Spruce St
Fl 2
Philadelphia, PA 19104
Phone (215) 662-2428

3624 Market St
Fl 2
Philadelphia, PA 19104
Phone (215) 615-3669

250 King of Prussia Rd
Radnor, PA 19087
Phone (610) 902-1800

Organizations & group practices 4

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 6

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": "1165881600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768953600000",
    "number": "1538229117",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "235 SOUTH 33RD STREET",
            "address_2": "WEIGHTMAN HALL",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "19104",
            "telephone_number": "215-615-4400"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "235 SOUTH 33RD STREET",
            "address_2": "WEIGHTMAN HALL",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "19104",
            "telephone_number": "215-615-4400"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ZGONIS",
        "first_name": "MILTIADIS",
        "middle_name": "HOLGER",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-12-12",
        "last_updated": "2026-01-21",
        "certification_date": "2026-01-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "PA",
            "license": "MD437431",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Philadelphia, PA

Sources for this page

Verify at the official NPI Registry.