Mark David Koone, MD - Medicare Dermatology in Sherman, TX

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Mark David Koone, MD is a medicare enrolled "Dermatology" physician in Sherman, Texas. He went to Baylor College Of Medicine and graduated in 1982 and has 44 years of diverse experience with area of expertise as Dermatology. He is a member of the group practice Pdp Of Texas, Pllc and his current practice location is 230 E Sycamore St Ste 305, Sherman, Texas. You can reach out to his office (for appointments etc.) via phone at (903) 771-4613.

Mark David Koone is licensed to practice in Texas (license number H1976) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1720055833.

Contact Information

Mark David Koone, MD
230 E Sycamore St Ste 305,
Sherman, TX 75090-5013
(903) 771-4613
(903) 698-6376

Map and Direction




Physician's Profile

Full NameMark David Koone
GenderMale
SpecialityDermatology
Experience44 Years
Location230 E Sycamore St Ste 305, Sherman, Texas
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mark David Koone attended and graduated from Baylor College Of Medicine in 1982
  NPI Data:
  • NPI Number: 1720055833
  • Provider Enumeration Date: 03/07/2006
  • Last Update Date: 07/29/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 2961431150
  • Enrollment ID: I20101221001189

Medical Identifiers

Medical identifiers for Mark David Koone such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1720055833NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207N00000XDermatology H1976 (Texas)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Pdp Of Texas, Pllc246645505060

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Mark David Koone allows following entities to bill medicare on his behalf.
Entity NamePdp Of Texas, Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1629025739
PECOS PAC ID: 2466455050
Enrollment ID: O20060822000094
Entity NameOliver Street 5.01(a) Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1457695413
PECOS PAC ID: 0042464125
Enrollment ID: O20130128000189

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Mark David Koone is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mark David Koone, MD
9900 N Central Expy Ste 500,
Dallas, TX 75231-0928

Ph: (214) 987-3376		Mark David Koone, MD
230 E Sycamore St Ste 305,
Sherman, TX 75090-5013

Ph: (903) 771-4613

Reviews and Comments


Dermatology Doctors in Sherman, TX

Matthew Helm, MD
Dermatology
Medicare: Accepting Medicare Assignments
Practice Location: 230 E Sycamore St Ste 305, Sherman, TX 75090
Phone: 903-771-4613    Fax: 903-698-6376
Clint Cameron Moss, MD
Dermatology
Medicare: Accepting Medicare Assignments
Practice Location: 815 Pecan Grove Rd E, Sherman, TX 75090
Phone: 903-892-2126    Fax: 903-992-2129

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.