Mark Wallis, M.D.
NPI 1861489049 · MOHS-Micrographic Surgery Physician · Longview, TX
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Wallis, M.D. is a MOHS-Micrographic Surgery Physician provider in Longview, TX (NPI 1861489049).
Provider details
- NPI number
- 1861489049
- Entity type
- Individual
- Primary specialty
- MOHS-Micrographic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- H6685 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
- Procedural Dermatology Physician207NS0135X
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
5,891 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 2,171 | $68 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,383 | $6 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 347 | $87 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 317 | $48 |
| Removal and Microscopic Exam of Growth of Head, Neck, Hands, Feet, Or Genitals, 1-5 Tissue Blocks17311 | 270 | $590 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 103 | 94 |
| Betamethasone Dipropionate | 70 | 40 |
| Mometasone Furoate | 63 | 37 |
| Doxycycline Hyclate | 53 | 18 |
| Ketoconazole | 31 | 15 |
| Triamcinolone Acetonide | 30 | 23 |
| Clobetasol Propionate | 29 | 13 |
| Lorazepam | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,136 across 112 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-03
- Last updated
- 2023-03-07
- Certified
- 2021-07-21
Frequently asked questions
- What is Mark Wallis's NPI number?
- Mark Wallis's National Provider Identifier (NPI) is 1861489049, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Wallis's specialty?
- Mark Wallis is listed in the NPPES registry with a primary specialty of MOHS-Micrographic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Wallis located?
- Mark Wallis's practice location on file with NPPES is 3535 N Fourth St Ste 400, Longview, TX 75605-0038.
- What is Mark Wallis's phone number?
- The practice phone number listed in the NPPES registry for Mark Wallis is (903) 757-3881.
- Does Mark Wallis accept Medicare?
- Mark Wallis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Wallis's NPI active?
- Yes — Mark Wallis's NPI (1861489049) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.