Dr Mark S Wallis, MD - Medicare Dermatology in Longview, TX

Dr Mark S Wallis, MD is a medicare enrolled "Dermatology - Mohs-micrographic Surgery" physician in Longview, Texas. He went to University Of Texas Medical School At San Antonio and graduated in 1988 and has 36 years of diverse experience with area of expertise as Dermatology. He is a member of the group practice Wallis Dermatology Associates Pllc and his current practice location is 3535 N Fourth St Ste 400, Longview, Texas. You can reach out to his office (for appointments etc.) via phone at (903) 757-3881.

Dr Mark S Wallis is licensed to practice in Texas (license number H6685) 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 1861489049.

Contact Information

Dr Mark S Wallis, MD
3535 N Fourth St Ste 400,
Longview, TX 75605-0038
(903) 757-3881
(903) 757-5948

Map and Direction




Physician's Profile

Full NameDr Mark S Wallis
GenderMale
SpecialityDermatology
Experience36 Years
Location3535 N Fourth St Ste 400, Longview, 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:
  • Dr Mark S Wallis attended and graduated from University Of Texas Medical School At San Antonio in 1988
  NPI Data:
  • NPI Number: 1861489049
  • Provider Enumeration Date: 10/03/2005
  • Last Update Date: 03/07/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 7113057563
  • Enrollment ID: I20100610000658

Medical Identifiers

Medical identifiers for Dr Mark S Wallis such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1861489049NPI-NPPES
30076724OtherTXDPS NUMBER
45D0684764OtherTXCLIA NUMBER
CID037095OtherTXCIDC NUMBER
H6685OtherTXMEDICAL LICENSE NUMBER
04813881913OtherTXMED. ED. NUMBER
0898678-03MedicaidTX

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207N00000XDermatology H6685 (Texas)Secondary
207ND0900XDermatology - Dermatopathology H6685 (Texas)Secondary
207NI0002XDermatology - Clinical & Laboratory Dermatological Immunology H6685 (Texas)Secondary
207NP0225XDermatology - Pediatric Dermatology H6685 (Texas)Secondary
207NS0135XDermatology - Procedural Dermatology H6685 (Texas)Secondary
207ND0101XDermatology - Mohs-micrographic Surgery H6685 (Texas)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Wallis Dermatology Associates Pllc07494401889

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. Dr Mark S Wallis allows following entities to bill medicare on his behalf.
Entity NameWallis Dermatology Associates Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396945234
PECOS PAC ID: 0749440188
Enrollment ID: O20120322000343

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. Dr Mark S Wallis 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
Dr Mark S Wallis, MD
3535 N Fourth St Ste 400,
Longview, TX 75605-0038

Ph: (903) 757-3881
Dr Mark S Wallis, MD
3535 N Fourth St Ste 400,
Longview, TX 75605-0038

Ph: (903) 757-3881

Reviews and Comments


Dermatology Doctors in Longview, TX

Luke Stewart Wallis, MD
Dermatology
Medicare: Medicare Enrolled
Practice Location: 3535 N Fourth St Ste 400, Longview, TX 75605
Phone: 903-757-3881    Fax: 903-757-5948
Matthew Thomas Hoffmann, MD
Dermatology
Medicare: Accepting Medicare Assignments
Practice Location: 1402 N 4th St, Longview, TX 75601
Phone: 903-757-8878    Fax: 903-757-5985
Dr. Robert Stanley Taylor Iii, MD
Dermatology
Medicare: Accepting Medicare Assignments
Practice Location: 3535 N Fourth St Ste 400, Longview, TX 75605
Phone: 903-757-3881    Fax: 903-757-5948
Laura Paul Fite, M.D.
Dermatology
Medicare: Accepting Medicare Assignments
Practice Location: 3535 N Fourth St Ste 400, Longview, TX 75605
Phone: 903-757-3881    Fax: 903-757-5948
Dr. Donna Vu,
Dermatology
Medicare: Not Enrolled in Medicare
Practice Location: 6 Doctor Cir, Longview, TX 75605
Phone: 903-757-3881    Fax: 903-757-5948

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.