2026 NPPES data Anatomic Pathology Physician NPI 1023399177 M.D.
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Kenneth Bloom, M.D.

Anatomic Pathology Physician in Aliso Viejo, California.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 2,597 in Anatomic Pathology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Industry payments
$107.64
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Kenneth Bloom, M.D. is a Anatomic Pathology Physician in Aliso Viejo, California, listed in the federal CMS National Provider Identifier registry.

$107.64
industry payments (Sunshine Act)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Board-eligible specialty (heuristic, not verified)

Kenneth Bloom, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Kenneth Bloom, M.D.?

Quality data not reported

NPI registry status

Active

Issued 09/02/2011

NPI 1023399177

Primary specialty

Anatomic Pathology Physician

Niche

2,597 US NPIs in this specialty

Specialty distribution in California

How Anatomic Pathology Physician compares to other specialties among California providers

California providers
Behavior Technician - 17.3%Behavior Technician17.3%Marriage & Family Therapist - 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Pharmacist - 3.5%Pharmacist3.5%Clinical Social Worker - 3.1%Clinical Social Worker3.1%Anatomic Pathology Physician - 0%Anatomic Pathology Physician0%
Largest specialties in California (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Anatomic Pathology Physician. Verify directly:

How MIPS and board certification work

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Kenneth Bloom, M.D. appears in the CMS NPPES registry as a Anatomic Pathology Physician provider holding M.D. credentials at 31 COLUMBIA, Aliso Viejo, CA, 92656, with a listed phone of (949) 425-5744. NPI 1023399177 was issued on 09/02/2011.

Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal, many Anatomic Pathology Physician providers operate outside Part D entirely.

Anatomic Pathology Physician is a narrow specialty nationwide, with 2,597 enrolled providers across 54 states and an average of 214 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.

Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

31 COLUMBIA
Aliso Viejo, CA 92656

Provider Details

NPI 1023399177
Specialty Anatomic Pathology Physician
Credentials M.D.
Gender Male
NPI Issued 09/02/2011

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Kenneth Bloom, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$108

Largest payer

AstraZeneca Pharmaceuticals LP

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context - California MBC 2023 annual report

Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Kenneth Bloom, M.D.. To verify Kenneth Bloom, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Anatomic Pathology Physician Overview

How Kenneth Bloom, M.D. fits within the Anatomic Pathology Physician landscape nationally.

2,597
Anatomic Pathology Physician Providers in US
54
States with Anatomic Pathology Physician
214
Avg Claims per Provider

Nearby Anatomic Pathology Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Bloom.

Compare Anatomic Pathology Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Anatomic Pathology Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Kenneth Bloom, M.D.'s specialty?
Kenneth Bloom, M.D. specializes in Anatomic Pathology Physician and practices in Aliso Viejo, California. Credentials: M.D..
Where is Kenneth Bloom, M.D. located?
Kenneth Bloom, M.D. is located at 31 COLUMBIA, Aliso Viejo, CA, 92656. Phone: (949) 425-5744.
What is Kenneth Bloom, M.D.'s NPI number?
Kenneth Bloom, M.D.'s National Provider Identifier (NPI) is 1023399177, issued on 09/02/2011.
How many Anatomic Pathology Physician providers are there in the US?
There are 2,597 Anatomic Pathology Physician providers across 54 states in the US. The average Anatomic Pathology Physician provider writes 214 Medicare Part D claims per year.
Does Kenneth Bloom, M.D. accept Medicare?
Kenneth Bloom, M.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kenneth Bloom, M.D.'s credentials?
Kenneth Bloom, M.D.'s NPI is 1023399177 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

View source datasets and methodology notes
Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology

Compiled from official public sources by the PlainDoctor editorial team.