Marissa Riley Felknor, MD

Primary specialty

Pediatric Emergency Medicine (Pediatrics) PhysicianTaxonomy code 2080P0204X

License

MT235207 Issued in PA

Practice address

4401 Penn Ave Ste 2400
Pittsburgh, PA 15224-1334

Phone

(412) 692-7980

NPI assigned

Mar 23, 2022

Sex

Female

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in PA

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

Specialty

Pediatric MedicineAlso: Emergency Medicine

Education

University of North Carolina at Chapel Hill School of Medicine, 2022

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: marissa.e.riley@upmcdirect.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 Pittsburgh Physicians

  • Gastroenterology Physician
  • Pittsburgh, PA
  • NPI 1619935004
  Medicare reassignment NPD
• University of Pittsburgh Physicians

  • Pediatrics Physician
  • Pittsburgh, PA
  • NPI 1225096639
  NPD
• University of Pittsburgh Physicians

  • Diagnostic Radiology Physician
  • Pittsburgh, PA
  • NPI 1285692699
  NPD

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

{
    "created_epoch": "1647993600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769472000000",
    "number": "1093464232",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3600 FORBES AVE STE 140",
            "city": "PITTSBURGH",
            "state": "PA",
            "postal_code": "152133410"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4401 PENN AVE STE 2400",
            "city": "PITTSBURGH",
            "state": "PA",
            "postal_code": "152241334",
            "telephone_number": "412-692-7980"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "225 E Chicago Ave",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606112991",
            "country_code": "US",
            "telephone_number": "312-227-4000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FELKNOR",
        "first_name": "MARISSA",
        "middle_name": "RILEY",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-03-23",
        "last_updated": "2026-01-27",
        "certification_date": "2026-01-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080P0204X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Emergency Medicine",
            "state": "PA",
            "license": "MT235207",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "PA",
            "license": "MD490829",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "CHP@upmcdirect.com",
            "affiliation": "N",
            "address_1": "600 Grant St Fl 58",
            "city": "Pittsburgh",
            "state": "PA",
            "country_code": "US",
            "postal_code": "152192739",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Dao T Felen, DDS
• Richard Felicetti, PHD
• Yarieliz Feliciano Vazquez, PHARMD
• Lenia Felix
• James T Felker, MD
• Lori Ann Fell
• Susan Felsenfeld, PH.D.
• Kelsey Morgan Felter, PA-C, RDN
• Joshua W Felton, CRNA
• Kiley Felton, CRNP

• Pediatric Emergency Medicine (Pediatrics) Physician in Pittsburgh, PA
• Providers in Pittsburgh, PA by specialty
• Pediatric Emergency Medicine (Pediatrics) Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 27, 2026; 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.