Mark Fielding Yost, MD

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

MD053453L Issued in PA

Practice address

201 State St
Erie, PA 16550-0002

Phone

(814) 877-6182

Fax

(814) 877-6149

NPI assigned

Aug 11, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

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

Diagnostic RadiologyAlso: Interventional Radiology

Education

University of Michigan Medical School, 1978

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Regional Health Services IncGroup PAC ID 4880593722, 572 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Upmc Hamot Hospital, Erie, PA, CCN 390063
• Upmc Chautauqua at Wca Hospital, Jamestown, NY, CCN 330239

Merit-based Incentive Payment System (MIPS)

Final score

81.89 of 100Reported as group

Quality

65.8

Promoting interoperability

100

Improvement activities

40

Cost

73.83

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mark.f.yost@upmcdirect.com
• Direct secure messaging: myost276004@upmc.direct-ci.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.

• Regional Health Services Inc

  • Family Medicine Physician
  • Erie, PA
  • NPI 1174520654

  Vascular & Interventional Radiology

  Medicare reassignment Care Compare group NPD
• Woodland Diagnostic Imaging LLC

  dba Alliance Healthcare Radiology at Belden Village

  • Magnetic Resonance Imaging (MRI) Clinic/Center
  • Canton, OH
  • NPI 1194733246
  NPD (past)

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

• Upmc Hamot

  • General Acute Care Hospital
  • Erie, PA
  • NPI 1487647590
  Care Compare affiliation
• Upmc Hamot

  • General Acute Care Hospital
  • Erie, PA
  • NPI 1538207394
  Care Compare affiliation
• Upmc Chautauqua at Wca

  dba UPMC Chautauqua WCA

  • Substance Use Disorder Rehabilitation Hospital Unit
  • Jamestown, NY
  • NPI 1568023687
  Care Compare affiliation
• Upmc Chautauqua at Wca

  dba UPMC Chautauqua WCA

  • General Acute Care Hospital
  • Jamestown, NY
  • NPI 1770573222
  Care Compare affiliation

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

{
    "created_epoch": "1155254400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788393600000",
    "number": "1598776825",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "201 STATE ST",
            "city": "ERIE",
            "state": "PA",
            "postal_code": "165500002",
            "telephone_number": "814-877-6182",
            "fax_number": "814-877-6149"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "201 STATE ST",
            "city": "ERIE",
            "state": "PA",
            "postal_code": "165500002",
            "telephone_number": "814-877-6182",
            "fax_number": "814-877-6149"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "300 State St Ste 401",
            "address_purpose": "LOCATION",
            "city": "Erie",
            "state": "PA",
            "postal_code": "165071438",
            "country_code": "US",
            "telephone_number": "814-877-6370",
            "fax_number": "814-877-6356",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "YOST",
        "first_name": "MARK",
        "middle_name": "FIELDING",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-11",
        "last_updated": "2026-09-03",
        "certification_date": "2020-05-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0204X",
            "taxonomy_group": "",
            "desc": "Radiology, Vascular & Interventional Radiology",
            "state": "PA",
            "license": "MD053453L",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "PA",
            "license": "MD053453L",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "myost276004@upmc.direct-ci.com",
            "affiliation": "N",
            "address_1": "600 Grant St",
            "address_2": "Floor 58",
            "city": "Pittsburgh",
            "state": "PA",
            "country_code": "US",
            "postal_code": "152192702",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Brooke Yonko
• Christopher Yonko, DO
• Kimberly M Yorty
• Bryan Yost
• Corinne Yost
• Peyton Yost
• Young Chiropractic Center, Inc.
• Young Chiropractic LLC
• Young Men's Christian Association of Greater Erie
• Beau Young

• Diagnostic Radiology Physician in Erie, PA
• Providers in Erie, PA by specialty
• Diagnostic Radiology Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 3, 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.