Karin Machnau, MD
NPI 1508852302 · Dermatology Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karin Machnau, MD is a Dermatology Physician provider in Scottsdale, AZ (NPI 1508852302).
Provider details
- NPI number
- 1508852302
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 22446 (AZ)
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
6,087 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 | 2,649 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,258 | $91 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 869 | $55 |
| Biopsy of Related Skin Growth, First Growth11102 | 306 | $92 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 268 | $129 |
| Shaving of Skin Growth of Body, Arms, Or Legs, 0.5 Cm Or Less11300 |
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 |
|---|---|---|
| Triamcinolone Acetonide | 172 | 152 |
| Ketoconazole | 55 | 35 |
| Fluorouracil | 37 | 36 |
| Clobetasol Propionate | 35 | 28 |
| Clindamycin Phosphate | 28 | 20 |
| Valacyclovir Hclbrand: Valacyclovir | 24 | 13 |
| Doxepin Hcl | 19 | — |
| Nystatin | 19 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,025 across 49 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
Additional practice locations (1)
- 14275 N 87th StSte 110Scottsdale, AZ 85260Phone: (480) 905-8485Fax: (480) 905-7274
Registry dates
- Enumerated
- 2005-09-27
- Last updated
- 2019-11-07
Frequently asked questions
- What is Karin Machnau's NPI number?
- Karin Machnau's National Provider Identifier (NPI) is 1508852302, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karin Machnau's specialty?
- Karin Machnau is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Karin Machnau located?
- Karin Machnau's practice location on file with NPPES is 14275 N 87th St, Scottsdale, AZ 85260.
- What is Karin Machnau's phone number?
- The practice phone number listed in the NPPES registry for Karin Machnau is (480) 905-8485.
- Does Karin Machnau accept Medicare?
- Karin Machnau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karin Machnau's NPI active?
- Yes — Karin Machnau's NPI (1508852302) is active in the NPPES registry as of the last update on 2019-11-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.