Ernest Bloom, MD
NPI 1306941620 · Dermatopathology Physician · Alameda, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ernest Bloom, MD is a Dermatopathology Physician provider in Alameda, CA (NPI 1306941620).
Provider details
- NPI number
- 1306941620
- Entity type
- Individual
- Primary specialty
- Dermatopathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G56359 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
- Procedural Dermatology Physician207NS0135X
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
10,564 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 | 8,554 | $9 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 687 | $81 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 675 | $109 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 201 | $133 |
| Destruction of Skin Growth, 1-14 Growths17110 | 112 | $149 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
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 | 280 | 106 |
| Montelukast Sodium | 204 | 59 |
| Hydrocortisone | 141 | 58 |
| Triamcinolone Acetonide | 127 | 56 |
| Clindamycin Phosphate | 85 | 35 |
| Mupirocin | 54 | 38 |
| Fluocinolone Acetonide | 51 | 19 |
| Tralokinumab-Ldrmbrand: Adbry |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$958 across 56 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
- 2006-09-13
- Last updated
- 2013-01-31
Frequently asked questions
- What is Ernest Bloom's NPI number?
- Ernest Bloom's National Provider Identifier (NPI) is 1306941620, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ernest Bloom's specialty?
- Ernest Bloom is listed in the NPPES registry with a primary specialty of Dermatopathology Physician (Allopathic & Osteopathic Physicians).
- Where is Ernest Bloom located?
- Ernest Bloom's practice location on file with NPPES is 501 S Shore Ctr W, Alameda, CA 94501-5762.
- What is Ernest Bloom's phone number?
- The practice phone number listed in the NPPES registry for Ernest Bloom is (510) 227-7028.
- Does Ernest Bloom accept Medicare?
- Ernest Bloom is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ernest Bloom's NPI active?
- Yes — Ernest Bloom's NPI (1306941620) is active in the NPPES registry as of the last update on 2013-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.