Roy Blumenstrauch, M.D.
NPI 1639175409 · Specialist · Torrance, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roy Blumenstrauch, M.D. is a Specialist provider in Torrance, CA (NPI 1639175409).
Provider details
- NPI number
- 1639175409
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G54548 (CA)
Specialties & taxonomies
Other Service Providers
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
19,186 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 | 10,535 | $8 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 2,289 | $63 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,867 | $98 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,316 | $138 |
| Removal and Microscopic Exam of Growth of Head, Neck, Hands, Feet, Or Genitals, 1-5 Tissue Blocks17311 | 361 | $741 |
| Destruction of Skin Growth, 1-14 Growths |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 315 | 195 |
| Doxycycline Hyclate | 114 | 83 |
| Hydrocortisone | 110 | 72 |
| Clobetasol Propionate | 103 | 66 |
| Ketoconazole | 83 | 51 |
| Levocetirizine Dihydrochloride | 43 | 15 |
| Betamethasone Dipropionate | 41 | 24 |
| Ammonium Lactate | 40 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$215 across 9 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
- 2005-06-24
- Last updated
- 2007-11-27
Frequently asked questions
- What is Roy Blumenstrauch's NPI number?
- Roy Blumenstrauch's National Provider Identifier (NPI) is 1639175409, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy Blumenstrauch's specialty?
- Roy Blumenstrauch is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Roy Blumenstrauch located?
- Roy Blumenstrauch's practice location on file with NPPES is 4201 Torrance Blvd, Torrance, CA 90503-4504.
- What is Roy Blumenstrauch's phone number?
- The practice phone number listed in the NPPES registry for Roy Blumenstrauch is (310) 543-4444.
- Does Roy Blumenstrauch accept Medicare?
- Roy Blumenstrauch is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roy Blumenstrauch's NPI active?
- Yes — Roy Blumenstrauch's NPI (1639175409) is active in the NPPES registry as of the last update on 2007-11-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.