Kristin Meredith Hammersmith, MD

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

MD419569 Issued in PA

Practice address

51 N. 39TH Street
Philadelphia, PA 19104-2640

Phone

(215) 662-8100

Fax

(215) 662-1721

NPI assigned

Jul 7, 2005

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 3

Other names 1

• Kristin Matelis Former name

Medicare fee-for-service enrollment

Enrolled in NJ, PA2 enrollments

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 2

Specialty

Ophthalmology

Education

West Virginia University School of Medicine, 1998

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

University of Penn-Medical GroupGroup PAC ID 6204730955, 3,433 clinicians

Clinical Health Care Associates of New Jersey PCGroup PAC ID 0749180198, 793 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Hospital of Univ of Pennsylvania Hospital, Philadelphia, PA, CCN 390111
• Penn Presbyterian Medical Center Hospital, Philadelphia, PA, CCN 390223

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
• Direct secure messaging: kristin.hammersmith.p2@direct.vantagecornea.nextgenshare.com

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.

• University of Penn-Medical Group

  • Gynecologic Oncology Physician
  • Philadelphia, PA
  • NPI 1235527342
  Medicare reassignment Care Compare group NPD
• Clinical Health Care Associates of New Jersey, P.C.

  • Family Medicine Physician
  • Cherry Hill, NJ
  • NPI 1447260435
  Medicare reassignment Care Compare group NPD
• Children's Surgical Associates LTD

  • Plastic Surgery Physician
  • Philadelphia, PA
  • NPI 1326117185
  Medicare reassignment NPD
• Wills Eye Ophthalmology Clinic, Inc

  • Ophthalmology Physician
  • Philadelphia, PA
  • NPI 1184624009
  Medicare reassignment NPD
• Children's Surgical Associates LTD

  • Maternal & Fetal Medicine Physician
  • Philadelphia, PA
  • NPI 1598841637
  NPD
• University of Penn-Medical Group

  • Ophthalmology Physician
  • Philadelphia, PA
  • NPI 1316335425
  NPD
• University of Penn-Medical Group

  • Surgical Oncology Physician
  • Philadelphia, PA
  • NPI 1871981985
  NPD
• Children's Surgical Associates LTD

  • Urology Physician
  • Philadelphia, PA
  • NPI 1003985854
  NPD (past)
• Children's Surgical Associates LTD

  • Pediatric Surgery Physician
  • Philadelphia, PA
  • NPI 1760562581

  Ophthalmology

  NPD (past)
• Children's Surgical Associates LTD

  • Neurological Surgery Physician
  • Philadelphia, PA
  • NPI 1821177395
  NPD (past)
• University of Penn - Medical Group

  • Cardiovascular Disease Physician
  • Philadelphia, PA
  • NPI 1093725145
  NPD (past)

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

• Hospital of the University of PA

  • Ambulatory Fertility Facility
  • Phila, PA
  • NPI 1033262316

  Hospital

  Care Compare affiliation
• Presbyterian Medical Center of the University of Pennsylvania Health S

  dba UPHS Presbyterian Medical Center

  • General Acute Care Hospital
  • Philadelphia, PA
  • NPI 1245207521
  Care Compare affiliation
• Trustees of the University of Pennsylvania

  dba Hospital of the University of Pennsylvania

  • General Acute Care Hospital
  • Philadelphia, PA
  • NPI 1851370910
  Care Compare affiliation

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

{
    "created_epoch": "1120694400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752451200000",
    "number": "1437157187",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "51 N. 39TH STREET",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "191042640",
            "telephone_number": "215-662-8100",
            "fax_number": "215-662-1721"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "51 N. 39TH STREET",
            "city": "PHILADELPHIA",
            "state": "PA",
            "postal_code": "191042640",
            "telephone_number": "215-662-8100",
            "fax_number": "215-662-1721"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "125 S 9th St Ste 402",
            "address_purpose": "LOCATION",
            "city": "Philadelphia",
            "state": "PA",
            "postal_code": "191075117",
            "country_code": "US",
            "telephone_number": "267-546-1100",
            "fax_number": "267-200-0679",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAMMERSMITH",
        "first_name": "KRISTIN",
        "middle_name": "MEREDITH",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-07-07",
        "last_updated": "2025-07-14",
        "certification_date": "2025-07-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "NJ",
            "license": "25MA07668200",
            "primary": false
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "PA",
            "license": "MD419569",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "AETNA",
            "identifier": "322 1147",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE SHEILD",
            "identifier": "1444179",
            "state": "PA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0019370960002",
            "state": "PA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "KRISTIN",
            "last_name": "MATELIS",
            "credential": "MD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Benjamin David Hammelman, MD
• David Aaron Hammer, M.D.
• Lauren Hart Hammer, MD
• Talya Hammer, PSY.D.
• Jessica Hammerman, PA-C
• Jennifer Hammond, MS, NCC, LPC
• Kathleen Hammond, MSN, CRNA
• Kelly A Hammond, BA
• Kristen Hammond, MS
• Lisa Marie Hammond, CRNP

• Ophthalmology Physician in Philadelphia, PA
• Providers in Philadelphia, PA by specialty
• Ophthalmology Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 14, 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.