2026 NPPES data Medical Toxicology (Emergency Medicine) Physician NPI 1669730925 M.D.
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DANIEL LASOFF, M.D.

Medical Toxicology (Emergency Medicine) Physician in SAN DIEGO, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
79
Medicare Part D claims · 65 beneficiaries · Medical Toxicology (Emergency Medicine) Physician avg: 329
Industry payments
$123.93
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DANIEL LASOFF, M.D. filed 79 Medicare Part D claims in 2023 as a Medical Toxicology (Emergency Medicine) Physician in SAN DIEGO, California.

79
Part D claims, 2023
Likely
board-certified (heuristic)

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.

DANIEL LASOFF, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

79 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

DANIEL LASOFF, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about DANIEL LASOFF, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/24/2012

NPI 1669730925

Primary specialty

Medical Toxicology (Emergency Medicine) Physician

Rare

226 US NPIs in this specialty

Medicare Part D claims

79 76% vs specialty avg

2023 prescription claims

Specialty avg: 329

Specialty distribution in California

How Medical Toxicology (Emergency Medicine) Physician compares to other specialties among California providers

California providers

Medical Toxicology (Emergency Medicine) Physician share within California

1. Medical Toxicology (Emergency Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Toxicology (Emergency Medicine) Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Medical Toxicology (Emergency Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Medical Toxicology (Emergency Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Medical Toxicology (Emergency Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Medical Toxicology (Emergency Medicine) Physician) — ABMS / AOA estimate

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).

DANIEL LASOFF, M.D. appears in the CMS NPPES registry as a Medical Toxicology (Emergency Medicine) Physician provider holding M.D. credentials at 200 W ARBOR DR, SAN DIEGO, CA, 92103, with a listed phone of (619) 543-6463. NPI 1669730925 was issued on 04/24/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LASOFF most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 79 prescription claims written by this provider, covering 65 Medicare beneficiaries and totaling roughly $5K in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Medical Toxicology (Emergency Medicine) Physician is a narrow specialty nationwide, with 226 enrolled providers across 39 states and an average of 329 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

200 W ARBOR DR
SAN DIEGO, CA 92103

Provider Details

NPI 1669730925
Specialty Medical Toxicology (Emergency Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 04/24/2012

Hospital and facility affiliations

Facilities where DANIEL LASOFF, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

REGENTS OF THE UNIVERSITY OF CALIFORNIA
SAN DIEGO, CA
REGENTS OF THE UNIVERSITY OF CALIFORNIA
SAN DIEGO, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 DANIEL LASOFF, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$124

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 DANIEL LASOFF, M.D.. To verify DANIEL LASOFF, 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

79
Total Claims
$5K
Total Drug Cost
65
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
81
Total Day Supply
877
Generic Drug Cost
$772
Antibiotic Claims
30

Patient Demographics

Average Patient Age
72.7 years
Avg HCC Risk Score
2.31
Gender Split
51% female / 49% male
Age Distribution
<65: 13, 65-74: 26, 75-84: 12, 85+: 14

Medical Toxicology (Emergency Medicine) Physician Overview

How DANIEL LASOFF, M.D. fits within the Medical Toxicology (Emergency Medicine) Physician landscape nationally.

226
Medical Toxicology (Emergency Medicine) Physician Providers in US
39
States with Medical Toxicology (Emergency Medicine) Physician
329
Avg Claims per Provider

DANIEL LASOFF, M.D.'s 79 claims are below the specialty average of 329.

Nearby Medical Toxicology (Emergency Medicine) Physician Providers in California

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

Compare Medical Toxicology (Emergency Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DANIEL LASOFF, M.D.'s specialty?
DANIEL LASOFF, M.D. specializes in Medical Toxicology (Emergency Medicine) Physician and practices in SAN DIEGO, California. Credentials: M.D..
How much does DANIEL LASOFF, M.D. prescribe under Medicare Part D?
In 2023, DANIEL LASOFF, M.D. wrote 79 Medicare Part D claims totaling $5K in drug costs for 65 beneficiaries.
Where is DANIEL LASOFF, M.D. located?
DANIEL LASOFF, M.D. is located at 200 W ARBOR DR, SAN DIEGO, CA, 92103. Phone: (619) 543-6463.
What is DANIEL LASOFF, M.D.'s NPI number?
DANIEL LASOFF, M.D.'s National Provider Identifier (NPI) is 1669730925, issued on 04/24/2012.
How many Medical Toxicology (Emergency Medicine) Physician providers are there in the US?
There are 226 Medical Toxicology (Emergency Medicine) Physician providers across 39 states in the US. The average Medical Toxicology (Emergency Medicine) Physician provider writes 329 Medicare Part D claims per year.
Does DANIEL LASOFF, M.D. accept Medicare?
DANIEL LASOFF, M.D. appears in CMS Medicare data with 79 Part D claims and 65 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DANIEL LASOFF, M.D.'s credentials?
DANIEL LASOFF, M.D.'s NPI is 1669730925 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

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.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
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