Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1629086277 Individual Practitioner Male Practitioner

Dr. Mark A Thomas , MD

Internal Medicine • Topeka, KS

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Mark Thomas, MD is a certified Internal Medicine practicing in Topeka, KS. With approximately 36 years of clinical experience since completing medical education in 1990, Dr. Thomas delivers high-quality medical care to the local community at 4409 SW SHENANDOAH RD.

Dr. Thomas is affiliated with Cotton-O'Neil Clinic Revocable Trust and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, insertion of needle into vein for collection of blood sample, chronic care management services, first. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

4409 Sw Shenandoah Rd

Topeka, KS 666101678

Telephone 7855546259

Medicare Profile & Education

Medical School

Other

Graduation Year

1990

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Topeka, KS

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
36 Yrs +7.6 yrs vs City Avg
City Avg: 28.4 Yrs
State Avg: 25.6 Yrs
Regional Practice Density
54 Specialists

Practicing in Topeka, KS (1061 Statewide)

Telehealth Adoption Rate
13.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
47.6% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Thomas (36 Years) 36 Yrs
Topeka Specialty Average (28.4 Years) 28.4 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
875 495 $191.66 $117.63
36415 Insertion of needle into vein for collection of blood sample
758 477 $16.00 $8.63
99490 Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
555 104 $75.34 $58.00
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
533 323 $45.00 $15.29
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
471 471 $233.35 $119.50
G0444 Annual depression screening, 5 to 15 minutes
291 291 $32.00 $17.22
99439 Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month
196 64 $69.25 $44.28
77063 Screening digital tomography of both breasts
147 147 $43.10 $21.22
77067 Screening mammography
147 147 $175.00 $81.53
99213 Established patient office or other outpatient visit, typically 15 minutes
127 105 $130.18 $83.76
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
119 108 $258.42 $165.54
G0008 Administration of influenza virus vaccine
113 113 $36.00 $29.94
81003 Automated urinalysis test
110 106 $78.60 $2.20
82043 Urine microalbumin (protein) level
105 102 $83.24 $5.66
90653 Vaccine for influenza for injection into muscle
95 95 $108.00 $81.82
71046 X-ray of chest, 2 views
56 52 $54.50 $18.65
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and
33 32 $93.50 $49.12
99495 Transitional care management services for problem of at least moderate complexity
31 27 $294.53 $189.99
73030 X-ray of shoulder, minimum of 2 views
29 26 $63.25 $20.73
G0009 Administration of pneumococcal vaccine
27 27 $33.30 $29.94
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
27 27 $540.07 $289.02
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment
21 21 $256.10 $152.76
73562 X-ray of knee, 3 views
19 18 $76.75 $25.67
73502 X-ray of hip, 2-3 views
16 15 $92.25 $29.71
G0296 Counseling visit to discuss need for lung cancer screening using low dose ct scan (ldct) (service is for eligibility determination and shared decision making)
16 16 $65.75 $25.60
72050 X-ray of upper spine, 4 or 5 views
14 14 $79.25 $31.20
0241U Respiratory infectious agent detection by rna for severe acute respiratory syndrome coronavirus 2 (covid 19), influenza a, influenza b, and respiratory syncytial virus, upper respiratory specimen, each reported as detected or not detected
14 14 $276.83 $139.78
72110 X-ray of lower and sacral spine, minimum of 4 views
13 13 $97.00 $32.09
90694 Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage
12 12 $115.00 $75.81
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
12 11 $77.45 $51.70
99406 Smoking and tobacco use intermediate counseling, greater than 3 minutes up to 10 minutes
11 11 $26.24 $13.44
93005 Routine electrocardiogram (ecg) using at least 12 leads with tracing
11 11 $62.75 $5.50

Medical Specialties & State Licenses

CMS Verified: 2026-05-01
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License KS 04-25848

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
100180660A (KS)
Commercial Insurance / Payer ID Medicare Ptan
067115 (KS)

Hospital & Practice Group Affiliations

Cotton-O'neil Clinic Revocable Trust

901 Sw Garfield Ave, Topeka, KS 666061670

Phone: 7853549591

Career & Practice History Timeline

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

8 Historical Events
📍
Updated Practice Location May 01, 2026

Registered at 4409 SW SHENANDOAH RD, TOPEKA, KS 666101678 (Tel: 7855546259)

📍
Updated Business Mailing Address May 01, 2026

Registered at 4409 SW SHENANDOAH RD, TOPEKA, KS 666101678 (Tel: 7855546259)

NPI Profile Active June 12, 2014

NPI status registered as active in NPPES database

📍
Updated Practice Location June 12, 2014

Registered at 2909 SE WALNUT DR, TOPEKA, KS 666052189 (Tel: 7852670744)

📍
Updated Business Mailing Address June 12, 2014

Registered at 2909 SE WALNUT DR, TOPEKA, KS 666052189 (Tel: 7852670744)

👤
Provider Name / Credentials Updated June 12, 2014

Recorded as MARK THOMAS, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 12, 2014

Internal Medicine (License #04-25848 in KS)

🟢
Initial NPI Registration & Enumeration August 03, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1629086277
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 03, 2006
Last Update: May 01, 2026
Sole Proprietor: No

Mailing Address

4409 Sw Shenandoah Rd

Topeka, KS 666101678

Phone: 7855546259

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.