Dr. Ernest Bloom, MD

  • Alameda, CA
  • Dermatopathology physician
NPI1306941620PAC ID4981863115
Medicare services, 2024
10,689
Medicare patients, 2024
440
Part D claims, 2024
1,353
Publications
13
MIPS score, 2024
85
Practice address
501 S Shore W Ctr, Alameda, CA 94501
Practice phone
Call (310) 519-8890
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Csi Medical Group

Alameda, California

See all 3 affiliations

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Dr. Ernest Bloom is a dermatopathology physician in Alameda, California

Dr. Bloom practices at Csi Medical Group in Alameda, California.

Dr. Bloom's NPI, 1306941620, was assigned on September 13, 2006. Dr. Bloom graduated from UC Davis School of Medicine in 1984. Dr. Bloom holds California license G56359.

NPI and contact details
Medicare PAC ID
4981863115
NPI enumeration date
September 13, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(310) 519-8890
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
68
Medical school graduation
1984

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Ernest Bloom practices at Csi Medical Group in Alameda, California

Dr. Bloom's primary practice is Csi Medical Group, at 501 S Shore W Ctr, Alameda, CA 94501 in Alameda County. The practice phone is (310) 519-8890.

  • Csi Medical Group
    501 S Shore W Ctr, Alameda, CA 94501 · Alameda CountyPhone(310) 519-8890

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Ernest Bloom is affiliated with 2 sites of care and 1 medical group

Dr. Bloom's primary practice is Csi Medical Group in Alameda, California. The medical group on file is Schweiger Dermatology Group, San Pedro. Dmand AI also links Dr. Bloom to 1 more group practice or clinic, named with a free account.

See all 3 affiliations for Dr. Bloom

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Ernest Bloom's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bloom practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Csi Medical GroupAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Ernest Bloom is one of 57 dermatopathology physicians in California

Dermatopathology is Dr. Bloom's primary specialty in the NPI Registry, under taxonomy code 207ND0900X. Dr. Bloom is board certified in dermatology by the American Board of Dermatology. Dmand AI has Dr. Bloom's licenses on file in 2 states: California and Nevada.

Specialties and state licenses

  • Dermatopathology, CaliforniaPrimaryLicense G56359 · 1985 to 2027 · taxonomy 207ND0900X
  • Nevada license1999 to 2001

Clinical focus

Dmand AI lists acne, acute skin infection, benign or precancerous skin growths, cold sores or genital herpes, contact dermatitis, facial skin infection, hives and itchy rashes among the conditions Dr. Bloom treats.

Dermatopathology physicians near Dr. Bloom

Counts of dermatopathology physicians with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Ernest Bloom billed Medicare for 10,689 services in 2024

CMS data shows 10,689 Medicare services from Dr. Bloom across 12 procedure codes in 2024, for 440 Medicare patients. Medicare paid $210,317 for them. Every service was in an office.

Medicare services, 202410,689
Medicare patients440
Paid by Medicare$210,317
Procedure codes12

Dr. Bloom's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Surgery
2023: 8,2742024: 9,53115%
Office and hospital visits
2023: 9142024: 9817%
Drugs given in the office
2023: 822024: 12552%
Tests and treatments
2023: 02024: 52

Dr. Bloom compared with the California median for dermatopathology physicians, 2024

  • Dr. Bloom
  • California median
Medicare services
10,689vs 3,8022.8 times
Medicare patients
440vs 59326% below
Part D claims
1,266vs 2106.0 times

Medians across 53 dermatopathology physicians in California with Dmand AI profiles that report each measure.

Dr. Bloom's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Bloom

Need commercial claims for Dr. Bloom?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Bloom and other dermatopathology physicians in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Ernest Bloom treated 440 Medicare patients in 2024, average age 73

CMS counts 440 Medicare patients who saw Dr. Bloom in 2024. The largest group is 65 to 74, with 189 patients. 70% of them have high blood pressure, and 69% have high cholesterol. 60% are also on Medicaid. Their average risk score is 1.33, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Bloom's median patient age at 55, with 46% women.

Medicare patients, 2024440
Average age73
Average risk score1.33
Also on Medicaid60%

Dr. Bloom's Medicare patients by age, 2024

Dr. Bloom's Medicare patients by sex, 2024

  • Women23353%
  • Men20747%

Chronic conditions among Dr. Bloom's Medicare patients, 2024

  1. High blood pressure70%
  2. High cholesterol69%
  3. Arthritis37%
  4. Diabetes34%
  5. Chronic kidney disease23%
  6. Mood disorders23%
  7. Depression19%
  8. Anxiety18%

Share of Medicare patients with each condition. A patient can have several.

Dr. Bloom's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 55

Patient panel by sex, all payers

  • Women46%
  • Men47%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Ernest Bloom wrote 1,353 Medicare Part D claims in 2024

In 2024, Dr. Bloom wrote 1,353 Medicare Part D claims for 275 patients. 95% of them were for generic drugs. CMS names the drug for 1,266 of them, across 22 drugs with 11 or more claims each, at $194,077 in total drug cost. In 2023, CMS named 856 claims across 14 drugs.

Part D claims, 20241,353
Drugs named by CMS22
Total drug cost$194,077
Part D patients275

Dr. Bloom's Part D claims by kind of drug, 2024

  • Generic1,292 claims95%
  • Brand-name and other61 claims5%

Dr. Bloom's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Bloom's Part D claims, 2024

  • Antibiotics2%25 of 1,353 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 8562024: 1,26648%

Drugs named by CMS: 22 in 2024, 14 in 2023.

See all prescribing by Dr. Bloom

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Ernest Bloom scored 85 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. Bloom for performance year 2024, reported as part of a group. Dr. Bloom accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 1,153 procedures of removal of skin lesions by Dr. Bloom, more than 94% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Dr. Bloom's MIPS scores, performance year 2024

  • 85of 100Final score
  • 90.8of 100Quality
  • 87of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 71of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. Bloom ranks in Medicare procedure volume

Removal of skin lesions
94th percentile1,153 procedures
Skin biopsy
60th percentile13 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

For MedTech and pharma teams

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Dr. Ernest Bloom has 13 publications on record

Dmand AI links 13 papers to Dr. Bloom. The most frequent topics are Cells, Cultured, Trabecular Meshwork and Cell Division. Dr. Bloom has published most often in Arch Dermatol Res. Dr. Bloom's most frequent co-authors are Howard I. Maibach, MD, Daniel T. Matulich, MD and Robert N. Weinreb, MD.

Papers13

Topics Dr. Bloom writes about most

  • Cells, Cultured
  • Trabecular Meshwork
  • Cell Division
  • Dexamethasone
  • Kinetics
  • Lymph Nodes
  • Receptors, Glucocorticoid
  • Receptors, Steroid

Dr. Bloom's most frequent co-authors

Recent publications by Dr. Bloom

See all 13 publications and co-authors

See who Dr. Bloom researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Bloom works with, so you can find a warm path to the right dermatopathology physicians.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Ernest Bloom received $11,635 in industry payments from 2016 to 2025

CMS Open Payments shows 314 general payments to Dr. Bloom from 17 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 59% of the total. Pfizer Inc. paid the most, $5,569.

General payments to Dr. Bloom by program year, 2016 to 2025

General payments to Dr. Bloom by kind, 2016 to 2025

$11.6Kin total
  • Food and beverage$6,81259%
  • Consulting fees$3,50030%
  • Travel and lodging$1,20210%
  • Education$1211%

Companies that paid Dr. Bloom the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Bloom

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Ernest Bloom has 1 award and honors on record

Dmand AI lists 1 award for Dr. Bloom.

Awards and honors for Dr. Bloom

  1. Undated
    • AAD Fellow

Source: Dmand AI Professional Profile Data

Dr. Ernest Bloom graduated from UC Davis School of Medicine

Dr. Bloom graduated from UC Davis School of Medicine in 1984. Dr. Bloom is a member of AAD.

  1. Medical schoolUC Davis School of Medicine
  2. Board certified in dermatologyAmerican Board of Dermatology

Source: Dmand AI Professional Profile Data

Dr. Ernest Bloom accepts plans from 11 insurance carriers

Dr. Bloom is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Highmark. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Blue Cross Blue Shield of Michigan
  • Highmark
  • United Healthcare
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Regence Health Plans
  • Aspirus Health Plan
  • +3 more carriersWith a free account

Plan types Dr. Bloom accepts, by number of carriers

  1. PPO8
  2. Medicare7
  3. POS5
  4. HMO4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Ernest Bloom's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Ernest Bloom

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Ernest Bloom's NPI number?

Dr. Ernest Bloom's NPI number is 1306941620. It was assigned on September 13, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Ernest Bloom?

Dr. Ernest Bloom is a dermatopathology physician in Alameda, California. The primary specialty in the NPI Registry is Dermatopathology Physician (taxonomy code 207ND0900X).

Where does Dr. Ernest Bloom practice?

Dr. Bloom practices at 501 S Shore W Ctr, Alameda, CA 94501. Dr. Bloom's primary practice is Csi Medical Group in Alameda, California. Dmand AI also links Dr. Bloom to 1 group practice or clinic.

What is Dr. Ernest Bloom's office phone number?

The practice phone on file for Dr. Bloom is (310) 519-8890.

What is Dr. Ernest Bloom's medical license number?

Dr. Bloom holds California license G56359, one of the licenses on file in 2 states.

Which states has Dr. Ernest Bloom been licensed in?

Dmand AI has state licenses on file for Dr. Bloom in California (1985 to 2027) and Nevada (1999 to 2001).

What medical group is Dr. Ernest Bloom part of?

Dr. Bloom is linked to Schweiger Dermatology Group, San Pedro.

Does Dr. Ernest Bloom accept Medicare?

Yes. CMS data shows Dr. Bloom billed Medicare for 10,689 services in 2024, and Dr. Bloom accepts Medicare assignment.

What is Dr. Ernest Bloom's MIPS score?

Dr. Bloom's MIPS final score for performance year 2024 is 85 out of 100, reported as part of a group.

How many Medicare patients does Dr. Ernest Bloom see?

CMS counts 440 Medicare patients who saw Dr. Bloom in 2024, with an average age of 73.

Show 9 more questionsShow fewer questions

Is Dr. Ernest Bloom board certified?

Yes. Dr. Bloom is board certified in dermatology by the American Board of Dermatology.

What services does Dr. Ernest Bloom bill to Medicare?

In 2024, Dr. Bloom's most billed Medicare services were surgery: skin and soft tissue (17003), surgery: skin and soft tissue (17000) and office visit, established patient (99213).

Where did Dr. Ernest Bloom go to medical school?

Dr. Bloom graduated from UC Davis School of Medicine in 1984.

What drugs does Dr. Ernest Bloom prescribe most?

In 2024 Medicare Part D data, Dr. Bloom's most prescribed drugs by claims were Ketoconazole, Montelukast Sodium and Hydrocortisone.

Has Dr. Ernest Bloom received payments from drug or device companies?

CMS Open Payments shows $11,635 in general payments to Dr. Bloom from 17 companies from 2016 to 2025. The largest total came from Pfizer Inc.

How long has Dr. Ernest Bloom been practicing?

Dr. Bloom graduated from medical school in 1984, 42 years ago.

Does Dr. Ernest Bloom do research?

Dmand AI links 13 publications to Dr. Bloom.

Who does Dr. Ernest Bloom publish with?

Dr. Bloom's most frequent co-authors are Howard I. Maibach, MD (6 shared papers), Daniel T. Matulich, MD (2 shared papers) and Robert N. Weinreb, MD (1 shared paper).

What insurance does Dr. Ernest Bloom accept?

Dr. Bloom is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Highmark. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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