Mark Ash, M.D.
NPI 1710419379 · Dermatology Physician · Clay, NY
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Ash, M.D. is a Dermatology Physician provider in Clay, NY (NPI 1710419379).
Provider details
- NPI number
- 1710419379
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 309640 (NY)
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
9 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
2,578 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 | 792 | $6 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 548 | $122 |
| Destruction of Skin Growth, 1-14 Growths17110 | 271 | $101 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 270 | $43 |
| 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'SG2211 | 191 | $16 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 251 | 118 |
| Clobetasol Propionate | 199 | 114 |
| Mupirocin | 166 | 123 |
| Fluorouracil | 116 | 92 |
| Triamcinolone Acetonide | 115 | 88 |
| Tacrolimus | 73 | 51 |
| Ciclopirox | 64 | 35 |
| Prednisone | 51 | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,301 across 175 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
- 2017-03-31
- Last updated
- 2026-01-23
- Certified
- 2026-01-23
Frequently asked questions
- What is Mark Ash's NPI number?
- Mark Ash's National Provider Identifier (NPI) is 1710419379, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Ash's specialty?
- Mark Ash is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Ash located?
- Mark Ash's practice location on file with NPPES is 4106 Route 31 # 904, Clay, NY 13041-8789.
- What is Mark Ash's phone number?
- The practice phone number listed in the NPPES registry for Mark Ash is (315) 500-3376.
- Does Mark Ash accept Medicare?
- Mark Ash is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Ash's NPI active?
- Yes — Mark Ash's NPI (1710419379) is active in the NPPES registry as of the last update on 2026-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.