Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1861489049 Individual Practitioner Male Practitioner

Dr. Mark S Wallis , MD

Dermatology - MOHS-Micrographic Surgery • Longview, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Mark Wallis, MD is a certified Dermatology - MOHS-Micrographic Surgery practicing in Longview, TX. With approximately 38 years of clinical experience since graduating from University Of Texas Medical School At San Antonio in 1988, Dr. Wallis delivers high-quality medical care to the local community at 3535 N FOURTH ST STE 400.

Dr. Wallis is affiliated with Wallis Dermatology Associates Pllc and accepts Medicare assignment.

Frequently performed procedures and clinical services include aminolevulinic acid hcl for topical administration, 10% gel, 10 mg, pathology examination of tissue using a microscope, intermediate complexity, destruction of precancer skin growth, 2-14 growths. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

3535 N Fourth St Ste 400

Longview, TX 756050038

Telephone 9037573881
Fax 9037575948
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

University Of Texas Medical School At San Antonio

Graduation Year

1988

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Dermatology - MOHS-Micrographic Surgery in Longview, TX

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
38 Yrs -1.5 yrs vs City Avg
City Avg: 39.5 Yrs
State Avg: 20.1 Yrs
Regional Practice Density
2 Specialists

Practicing in Longview, TX (123 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
65.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Wallis (38 Years) 38 Yrs
Longview Specialty Average (39.5 Years) 39.5 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
J7345 Aminolevulinic acid hcl for topical administration, 10% gel, 10 mg
5,000 16 $3.00 $1.66
88305 Pathology examination of tissue using a microscope, intermediate complexity
2,171 1,291 $178.00 $67.58
17003 Destruction of precancer skin growth, 2-14 growths
1,383 193 $33.00 $6.23
99213 Established patient office or other outpatient visit, typically 15 minutes
347 264 $175.00 $86.53
17000 Destruction of skin growth
317 223 $160.00 $47.73
17311 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks
270 204 $1570.00 $590.36
Q4229 Cogenex amniotic membrane, per square centimeter
266 18 $1795.00 $912.87
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
197 148 $250.00 $121.46
88304 Pathology examination of tissue using a microscope, moderately low complexity
156 136 $145.00 $39.99
17312 Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks
129 93 $960.00 $388.47
11102 Tangential biopsy of single skin lesion
114 99 $245.00 $78.20
13132 Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm
101 91 $1145.00 $224.81
J3301 Injection, triamcinolone acetonide, not otherwise specified, 10 mg
72 18 $10.00 $0.96
96372 Injection beneath the skin or into muscle for therapy, diagnosis, or prevention
56 23 $51.00 $13.62
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
53 47 $730.00 $252.31
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm
52 37 $288.00 $95.00
11103 Biopsy of related skin growth, each additional growth
49 26 $130.00 $46.86
17110 Destruction of up to 14 skin growths
44 41 $270.00 $93.02
15275 Application of skin substitute graft to wound of face, scalp, eyelids, mouth, neck, ears, around eyes, genitals, hands, feet, fingers, or toes, 25.0 sq cm or less of wound 100.0 sq cm or less
43 23 $375.00 $107.44
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm
35 30 $680.00 $136.40
13121 Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs
31 28 $1020.00 $227.08
11300 Shaving of 0.5 centimeters or less skin growth of the trunk, arms, or legs
29 16 $245.00 $57.26
17004 Destruction of precancer skin growth, 15 or more growths
27 23 $430.00 $158.60
17261 Destruction of cancer skin growth of trunk, arms, or legs, 0.6-1.0 cm
24 16 $347.00 $107.86
14060 Repair of wound of eyelids, nose, ears, or lips by transferring skin, 10.0 sq cm or less
24 24 $1850.00 $733.96
96574 Application of light with debridement to destroy precancer skin growth
24 15 $570.00 $259.39
11311 Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm
24 21 $330.00 $118.56
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
23 23 $345.00 $160.11
17262 Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm
21 19 $423.00 $161.44
13152 Complicated repair of wound of eyelids, nose, ears, or lip, 2.6-7.5 cm
21 20 $1200.00 $236.22
17313 Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks
20 19 $1475.00 $604.76
12034 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 7.6-12.5 cm
19 17 $770.00 $251.03
17281 Destruction of malignant growth (0.6 to 1.0 centimeters) of face, ears, eyelids, nose, lips, or mouth
19 18 $429.00 $166.59
11310 Shaving of 0.5 centimeters or less skin growth of face, ears, eyelids, nose, lips, or mouth
18 18 $280.00 $90.13
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
13 11 $350.00 $172.79
11306 Shaving of skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm
13 12 $360.00 $102.34
12052 Repair of wound (2.6 to 5.0 centimeters) of face, ears, eyelids, nose, lips, and/or mouth
12 12 $740.00 $149.58
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
12 12 $225.00 $107.00

Medical Specialties & State Licenses

CMS Verified: 2021-07-21
Dermatology - MOHS-Micrographic Surgery Primary Specialty

NUCC Taxonomy Code: 207ND0101X

State License TX H6685

The highly-trained surgeons that perform Mohs Micrographic Surgery are specialists both in dermatology and pathology. With their extensive knowledge of the skin and unique pathological skills, they are able to remove only diseased tissue, preserving healthy tissue and minimizing the cosmetic impact of the surgery. Mohs surgeons who belong to the American College of Mohs Surgery (ACMS) have completed a minimum of one year of fellowship training at one of the ACMS-approved training centers in the U.S.

Dermatology

NUCC Taxonomy Code: 207N00000X

State License TX H6685

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

Dermatology - Dermatopathology

NUCC Taxonomy Code: 207ND0900X

State License TX H6685

A dermatopathologist has the expertise to diagnose and monitor diseases of the skin including infectious, immunologic, degenerative and neoplastic diseases. This entails the examination and interpretation of specially prepared tissue sections, cellular scrapings and smears of skin lesions by means of routine and special (electron and fluorescent) microscopes.

Dermatology - Clinical & Laboratory Dermatological Immunology

NUCC Taxonomy Code: 207NI0002X

State License TX H6685

A dermatologist who utilizes various specialized laboratory procedures to diagnose disorders characterized by defective responses of the body's immune system. Immunodermatologists also may provide consultation in the management of these disorders and administer specialized forms of therapy for these diseases.

Dermatology - Pediatric Dermatology

NUCC Taxonomy Code: 207NP0225X

State License TX H6685

A pediatric dermatologist has, through additional special training, developed expertise in the treatment of specific skin disease categories with emphasis on those diseases which predominate in infants, children and adolescents.

Dermatology - Procedural Dermatology

NUCC Taxonomy Code: 207NS0135X

State License TX H6685

Procedural Dermatology, a subspecialty of Dermatology, encompassing a wide variety of surgical procedures and methods to remove or modify skin tissue for health or cosmetic benefit. These methods include scalpel surgery, laser surgery, chemical surgery, cryosurgery (liquid nitrogen), electrosurgery, aspiration surgery, liposuction, injection of filler substances, and Mohs micrographic controlled surgery (a special technique for the removal of growths, especially skin cancers).

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
0898678-03 (TX)
Commercial Insurance / Payer ID Dps Number
30076724 (TX)
Commercial Insurance / Payer ID Clia Number
45D0684764 (TX)
Commercial Insurance / Payer ID Cidc Number
CID037095 (TX)
Commercial Insurance / Payer ID Medical License Number
H6685 (TX)
Commercial Insurance / Payer ID Med. Ed. Number
04813881913 (TX)

Hospital & Practice Group Affiliations

Wallis Dermatology Associates Pllc

3535 N 4th St, Longview, TX 756050036

Phone: 9037573881

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

11 Associated Practitioners
Dorothy Womack , FNP-C

Nurse Practitioner

NPI 1003590282

Family Nurse Practitioner (Certified)

NPI 1144724717

Doctor of Medicine (M.D.)

NPI 1154825974

Doctor of Medicine (M.D.)

Tammi Short , FNP-C

Nurse Practitioner

NPI 1538137153

Family Nurse Practitioner (Certified)

Herold Osborne , PA-C

Physician Assistant - Medical

NPI 1710999727

Physician Assistant (Certified)

Dr. Robert Taylor , MD

Dermatology - MOHS-Micrographic Surgery

NPI 1760441893

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events
📍
Updated Practice Location July 21, 2021

Registered at 3535 N FOURTH ST STE 400, LONGVIEW, TX 756050038 (Tel: 9037573881)

📍
Updated Business Mailing Address July 21, 2021

Registered at 3535 N FOURTH ST STE 400, LONGVIEW, TX 756050038 (Tel: 9037573881)

NPI Profile Active September 18, 2012

NPI status registered as active in NPPES database

📍
Updated Business Mailing Address September 18, 2012

Registered at 6 DOCTOR CIR, LONGVIEW, TX 756055050 (Tel: 9037573881)

📍
Updated Practice Location September 18, 2012

Registered at 6 DOCTOR CIR, LONGVIEW, TX 756055050 (Tel: 9037573881)

👤
Provider Name / Credentials Updated September 18, 2012

Recorded as MARK WALLIS, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 18, 2012

Dermatology (License #H6685 in TX)

🟢
Initial NPI Registration & Enumeration October 03, 2005

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

0 Reviews
No patient reviews submitted yet for Dr. Mark Wallis. Be the first to share your experience!

Sign in to leave a review for Dr. Mark Wallis

Only verified registered users can submit ratings, post feedback, and upload facility photos.

NPI Administrative Meta

NPI Number: 1861489049
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: October 03, 2005
Last Update: March 07, 2023
Sole Proprietor: Yes

Mailing Address

3535 N Fourth St Ste 400

Longview, TX 756050038

Phone: 9037573881

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.