Mark Koone, MD
NPI 1720055833 · Dermatology Physician · Sherman, TX
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Koone, MD is a Dermatology Physician provider in Sherman, TX (NPI 1720055833).
Provider details
- NPI number
- 1720055833
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- H1976 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
8,212 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 4,497 | $7 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 1,029 | $55 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 866 | $92 |
| Destruction of Skin Growth, 1-14 Growths17110 | 458 | $110 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 286 | $57 |
| Biopsy of Related Skin Growth, First Growth |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clobetasol Propionate | 179 | 99 |
| Hydrocortisone | 165 | 100 |
| Ketoconazole | 152 | 66 |
| Triamcinolone Acetonide | 140 | 98 |
| Doxycycline Hyclate | 108 | 60 |
| Mometasone Furoate | 91 | 52 |
| Mupirocin | 85 | 64 |
| Fluorouracil | 59 | 56 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,576 across 75 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
- 2006-03-07
- Last updated
- 2025-07-29
- Certified
- 2025-07-29
Frequently asked questions
- What is Mark Koone's NPI number?
- Mark Koone's National Provider Identifier (NPI) is 1720055833, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Koone's specialty?
- Mark Koone is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Koone located?
- Mark Koone's practice location on file with NPPES is 230 E Sycamore St Ste 305, Sherman, TX 75090-5013.
- What is Mark Koone's phone number?
- The practice phone number listed in the NPPES registry for Mark Koone is (903) 771-4613.
- Does Mark Koone accept Medicare?
- Mark Koone is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Koone's NPI active?
- Yes — Mark Koone's NPI (1720055833) is active in the NPPES registry as of the last update on 2025-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.