2026 NPPES data Oncology Pharmacist NPI 1831801760
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JENNIFER LEE

Oncology Pharmacist in DUARTE, 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
17
Medicare Part D claims · Oncology Pharmacist avg: 160

What the federal data shows

JENNIFER LEE filed 17 Medicare Part D claims in 2023 as a Oncology Pharmacist in DUARTE, California.

17
Part D claims, 2023

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.

JENNIFER LEE's Medicare Part D volume vs every U.S. prescriber

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

17 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

What does the federal data show about JENNIFER LEE?

Quality data not reported

NPI registry status

Active

Issued 12/22/2022

NPI 1831801760

Primary specialty

Oncology Pharmacist

Niche

1,699 US NPIs in this specialty

Medicare Part D claims

17 89% vs specialty avg

2023 prescription claims

Specialty avg: 160

Specialty distribution in California

How Oncology Pharmacist compares to other specialties among California providers

California providers

Oncology Pharmacist share within California

1. Oncology Pharmacist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Oncology Pharmacist share within California

Specialty board-certification context

Estimated specialty board-certified rate — Oncology Pharmacist (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Oncology Pharmacist ABMS/AOA estimate

Est. board-certified rate (Oncology Pharmacist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Oncology Pharmacist) — 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).

JENNIFER LEE is a Oncology Pharmacist provider practicing in DUARTE, California, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1831801760. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

JENNIFER LEE appears in the CMS NPPES registry as a Oncology Pharmacist provider at 1500 DUARTE RD, DUARTE, CA, 91010, with a listed phone of (626) 256-4673. NPI 1831801760 was issued on 12/22/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LEE 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 17 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $134 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.

Oncology Pharmacist is a narrow specialty nationwide, with 1,699 enrolled providers across 50 states and an average of 160 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

1500 DUARTE RD
DUARTE, CA 91010

Provider Details

NPI 1831801760
Specialty Oncology Pharmacist
Gender Female
NPI Issued 12/22/2022

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 JENNIFER LEE. To verify JENNIFER LEE'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.

17
Total Claims
$134
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
17
Total Day Supply
232
Brand Drug Cost
$0
Generic Drug Cost
$134

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
1.04

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Ondansetron Hcl
13

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Oncology Pharmacist Overview

How JENNIFER LEE fits within the Oncology Pharmacist landscape nationally.

1,699
Oncology Pharmacist Providers in US
50
States with Oncology Pharmacist
160
Avg Claims per Provider

JENNIFER LEE's 17 claims are below the specialty average of 160.

Nearby Oncology Pharmacist Providers in California

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

Compare Oncology Pharmacist nationally: see state-by-state distribution →

Frequently Asked Questions

What is JENNIFER LEE's specialty?
JENNIFER LEE specializes in Oncology Pharmacist and practices in DUARTE, California.
How much does JENNIFER LEE prescribe under Medicare Part D?
In 2023, JENNIFER LEE wrote 17 Medicare Part D claims totaling $134 in drug costs for N/A beneficiaries.
Where is JENNIFER LEE located?
JENNIFER LEE is located at 1500 DUARTE RD, DUARTE, CA, 91010. Phone: (626) 256-4673.
What is JENNIFER LEE's NPI number?
JENNIFER LEE's National Provider Identifier (NPI) is 1831801760, issued on 12/22/2022.
How many Oncology Pharmacist providers are there in the US?
There are 1,699 Oncology Pharmacist providers across 50 states in the US. The average Oncology Pharmacist provider writes 160 Medicare Part D claims per year.
What drugs does JENNIFER LEE prescribe most often?
Based on 2023 Medicare Part D data, JENNIFER LEE's most frequently prescribed drugs include Ondansetron Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JENNIFER LEE accept Medicare?
JENNIFER LEE appears in CMS Medicare data with 17 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JENNIFER LEE's credentials?
JENNIFER LEE's NPI is 1831801760. 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