Mark A. Easterday, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

35-071525 Issued in OH

Practice address

420 N James Rd
Columbus, OH 43219-1834

Phone

(614) 257-5200

NPI assigned

Jan 5, 2006

Last updated

Sep 24, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in OH

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

HospitalistAlso: Internal Medicine

Education

Wright State University Boonshoft School of Medicine, 1995

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mount Carmel Health SystemGroup PAC ID 6709793367, 84 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mount Carmel East & West Hospital, Columbus, OH, CCN 360035
• Mount Carmel St Ann's Hospital, Westerville, OH, CCN 360012

Merit-based Incentive Payment System (MIPS)

Final score

94.28 of 100Reported as group

Quality

99.21

Improvement activities

40

Cost

62.72

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: measterday84903@direct.trinity-health.org

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.

• Mount Carmel Health System

  dba Mount Carmel Health System Physicians

  • Internal Medicine Physician
  • Columbus, OH
  • NPI 1457617235
  Medicare reassignment Care Compare group NPD
• Hospitalist Medicine Physicians of Ohio, Professional Corporation

  • Internal Medicine Physician
  • Columbus, OH
  • NPI 1043572290
  Medicare reassignment NPD
• Mount Carmel Health System

  dba Mount Carmel Dublin

  • General Acute Care Hospital
  • Dublin, OH
  • NPI 1710752183
  NPD
• Buckeye Inpatient Care, Inc.

  • Internal Medicine Physician
  • Westerville, OH
  • NPI 1659359024
  NPD (past)
• Mount Carmel Health

  dba Mt. Carmel Family Practice

  • Family Medicine Physician
  • Westerville, OH
  • NPI 1184646705
  NPD (past)
• Mount Carmel Health

  dba Mount Carmel West Physicians

  • Hospitalist Physician
  • Columbus, OH
  • NPI 1932120268
  NPD (past)
• Mount Carmel Health System

  • General Acute Care Hospital
  • Westerville, OH
  • NPI 1417037045
  NPD (past)
• Mount Carmel Health System

  • General Acute Care Hospital
  • Grove City, OH
  • NPI 1710067376
  NPD (past)

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

• Mount Carmel Health System

  • General Acute Care Hospital
  • Westerville, OH
  • NPI 1417037045
  Care Compare affiliation
• Mount Carmel Health System

  • General Acute Care Hospital
  • Grove City, OH
  • NPI 1710067376
  Care Compare affiliation
• Mount Carmel Health System

  • General Acute Care Hospital
  • Columbus, OH
  • NPI 1982784534
  Care Compare affiliation

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

{
    "created_epoch": "1136419200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790208000000",
    "number": "1891773263",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "420 N JAMES RD",
            "city": "COLUMBUS",
            "state": "OH",
            "postal_code": "432191834",
            "telephone_number": "614-257-5200"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "420 N JAMES RD",
            "city": "COLUMBUS",
            "state": "OH",
            "postal_code": "432191834",
            "telephone_number": "614-257-5200"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "EASTERDAY",
        "first_name": "MARK",
        "middle_name": "A.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-01-05",
        "last_updated": "2026-09-24",
        "certification_date": "2026-09-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "OH",
            "license": "35-071525",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• East Columbus Orthopedic Medicine & Pain Center, Inc
• East Columbus Periodontics LLC
• East Columbus Surgery Center LLC
• East Columbus Surgery Center LLC
• East Rockets HH, LLC (Heartland)
• Victoria Easterling
• Marlyssa Easterly
• Lauren Davenport Easterwood, APRN
• Eastglen Dental Associates Scott Kelly DDS LLC
• Eastglen Pediatrics, Inc.

• Internal Medicine Physician in Columbus, OH
• Providers in Columbus, OH by specialty
• Internal Medicine Physician in Ohio

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 24, 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.