Katherine Siamas, MD
NPI 1013209212 · Dermatology Physician · New York, NY
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Siamas, MD is a Dermatology Physician provider in New York, NY (NPI 1013209212).
Provider details
- NPI number
- 1013209212
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 270477 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,535 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 368 | $150 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 252 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 251 | $106 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 168 | $65 |
| Biopsy of Related Skin Growth, First Growth11102 | 159 | $112 |
| Destruction of Skin Growth, 1-14 Growths |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clobetasol Propionate | 50 | 31 |
| Minoxidil | 47 | 16 |
| Triamcinolone Acetonide | 43 | 37 |
| Nystatin | 43 | 23 |
| Ketoconazole | 39 | 19 |
| Doxycycline Hyclate | 35 | 18 |
| Metronidazole | 26 | 15 |
| Finasteride | 23 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-05
- Last updated
- 2014-09-24
Frequently asked questions
- What is Katherine Siamas's NPI number?
- Katherine Siamas's National Provider Identifier (NPI) is 1013209212, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Siamas's specialty?
- Katherine Siamas is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Siamas located?
- Katherine Siamas's practice location on file with NPPES is 445 E 58th St, New York, NY 10022-2384.
- What is Katherine Siamas's phone number?
- The practice phone number listed in the NPPES registry for Katherine Siamas is (212) 838-0270.
- Does Katherine Siamas accept Medicare?
- Katherine Siamas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Siamas's NPI active?
- Yes — Katherine Siamas's NPI (1013209212) is active in the NPPES registry as of the last update on 2014-09-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.