Mark David Koone, MD

Primary specialty

Dermatology PhysicianTaxonomy code 207N00000X

License

H1976 Issued in TX

Practice address

230 E Sycamore St Ste 305
Sherman, TX 75090-5013

Phone

(903) 771-4613

Fax

(903) 698-6376

NPI assigned

Mar 7, 2006

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 TX

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

Dermatology

Education

Baylor College of Medicine, 1982

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

PDP of Texas, PLLCGroup PAC ID 2466455050, 61 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

89.59 of 100Reported as individual

Quality

86.53

Promoting interoperability

90

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mark.koone@pdptx.emadirect.md

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.

• PDP of Texas, PLLC

  • Dermatology Physician
  • Dallas, TX
  • NPI 1629025739
  Medicare reassignment Care Compare group NPD
• Oliver Street 5.01(a) Inc.

  • Dermatology Physician
  • Dallas, TX
  • NPI 1457695413
  Medicare reassignment NPD
• Pediatric Dermatology of No. TX

  • Pediatric Dermatology Physician
  • Grapevine, TX
  • NPI 1487060679
  NPD (past)

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

{
    "created_epoch": "1141689600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753747200000",
    "number": "1720055833",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9900 N CENTRAL EXPY STE 500",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "752310928",
            "telephone_number": "214-987-3376",
            "fax_number": "469-532-0273"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "230 E SYCAMORE ST STE 305",
            "city": "SHERMAN",
            "state": "TX",
            "postal_code": "750905013",
            "telephone_number": "903-771-4613",
            "fax_number": "903-698-6376"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KOONE",
        "first_name": "MARK",
        "middle_name": "DAVID",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-07",
        "last_updated": "2025-07-29",
        "certification_date": "2025-07-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207N00000X",
            "taxonomy_group": "",
            "desc": "Dermatology",
            "state": "TX",
            "license": "H1976",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Knight Family Chiropractic of Sherman
• Amanda Knight
• Olivia Townsend Knight, DC
• Debra A Knightstep, PA-C
• Steven F Kolb, D.D.S., M.S.D.
• Scott E Kornman, M.D.
• Nishant Abraham Koshy
• Michael Kowalski, LPC-INTERN
• Casi Austin Kramer
• Kristen M. Deligans, D.C.

• Dermatology Physician in Sherman, TX
• Providers in Sherman, TX by specialty
• Dermatology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 29, 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.