ERNEST BLOOM MD
NPI 1306941620
Dermatology - Dermatopathology in Alameda, CA
About Ernest Bloom Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ERNEST BLOOM MD (NPI 1306941620) is an individual dermatopathology provider in Alameda, California, licensed in California (G56359) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, Davis School Of Medicine (1984).
NPPES Registry Identity
Specialties & Licenses 6
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ernest Bloom Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Ernest Bloom reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Pedro, CA 90732
- Reassigned Medicare billing, California enrollment
- 179 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 12
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94501 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ALAMEDA, CA 94501
ALAMEDA, CA 94501
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ernest Bloom's NPI number?
The NPI number for Ernest Bloom is 1306941620. It was assigned to this individual provider in the NPPES registry on September 13, 2006.
Where is Ernest Bloom located?
Ernest Bloom practices at 501 S Shore Ctr W 103A, Alameda, CA 94501. The listed phone number is (510) 227-7028.
What is Ernest Bloom's specialty?
The primary specialty registered for this NPI is Dermatology, specializing in Dermatopathology, with taxonomy code 207ND0900X.
Is Ernest Bloom enrolled in Medicare?
Yes. Ernest Bloom is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Ernest Bloom's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ernest Bloom reassigns Medicare benefits to Csi Medical Group (San Pedro, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ernest Bloom's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ernest Bloom was last updated on January 31, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ernest Bloom, MD · NPI 1306941620
Dermatopathology physician in Alameda, California. Individual provider, active in the CMS NPPES registry since September 13, 2006.
## Identity
- **NPI:** 1306941620 (Entity type: Individual)
- **Enumerated:** September 13, 2006
- **Primary specialty:** Dermatology - Dermatopathology · taxonomy 207ND0900X
- **State license:** G56359 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 501 S SHORE CTR W, 103A, Alameda, CA 94501-5762
- **Phone:** (510) 227-7028 · **Fax:** (510) 274-7119
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Csi Medical Group (NPI 1871909804, San Pedro, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Davis School Of Medicine, class of 1984
## Record status
- **NPPES last updated:** January 31, 2013
- **Other identifiers:** Medicare ID-Type Unspecified 00G563590; Medicare UPIN H08795
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Source: [NPI Profile](https://npiprofile.com/npi/1306941620) · Data from the CMS NPPES public registry.