Ernest Bloom, MD
Ernest Bloom, MD is a Dermatopathology Physician in Alameda, CA, registered under NPI 1306941620. This provider registers 6 separate taxonomy codes, which usually means they practise across more than one recognised specialty. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
The practice address on file is 501 S SHORE CTR W 103A, Alameda, CA 94501. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| G56359 | CA | Dermatopathology Physician primary |
| G56359 | CA | Dermatology Physician |
| G56359 | CA | MOHS-Micrographic Surgery Physician |
| G56359 | CA | Clinical & Laboratory Dermatological… |
| G56359 | CA | Pediatric Dermatology Physician |
| G56359 | CA | Procedural Dermatology Physician |
This provider holds licence G56359 issued in CA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Dermatology
- PAC ID
- 4981863115
- Enrollment ID
- I20120308000063
Medicare enrolment is recorded as approved under the provider type Practitioner - Dermatology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Dermatopathology covers
A dermatopathologist has the expertise to diagnose and monitor diseases of the skin including infectious, immunologic, degenerative and neoplastic diseases. This entails the examination and interpretation of specially prepared tissue sections, cellular scrapings and smears of skin lesions by means of routine and special (electron and fluorescent) microscopes. NUCC Health Care Provider Taxonomy, code 207ND0900X
All registered taxonomy codes
This provider registers 6 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207ND0900X | Dermatopathology Physician Dermatopathology | G56359 | CA | primary |
| 207N00000X | Dermatology Physician | G56359 | CA | |
| 207ND0101X | MOHS-Micrographic Surgery Physician MOHS-Micrographic Surgery | G56359 | CA | |
| 207NI0002X | Clinical & Laboratory Dermatological Immunology Physician Clinical & Laboratory Dermatological Immunology | G56359 | CA | |
| 207NP0225X | Pediatric Dermatology Physician Pediatric Dermatology | G56359 | CA | |
| 207NS0135X | Procedural Dermatology Physician Procedural Dermatology | G56359 | CA |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1306941620 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 13, 2006 |
| Last updated | Jan 31, 2013 |
| Status | Active |
| Sole proprietor | Yes |
| Credential | MD |
| Practice address |
501 S SHORE CTR W 103A Alameda, CA 94501 (510) 227-7028 Fax (510) 274-7119 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 3 | 0 | 6 | 9 | 4 | 1 | 6 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 3 | 0 | 6 | 9 | 4 | 2 | 6 | 4 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.