2026 NPPES data Gynecologic Oncology Physician NPI 1508446907
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LILA MARSHALL

Gynecologic Oncology Physician in ORANGE, 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
75
Medicare Part D claims · 32 beneficiaries · Gynecologic Oncology Physician avg: 188
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: LILA MARSHALL is a Gynecologic Oncology Physician ([object Object]) practicing in ORANGE, California with a Medicare Part D prescribing footprint of 75 claims across 32 beneficiaries — 16% brand-name prescribing .

What stands out: LILA MARSHALL filed 75 Medicare Part D claims in 2023 across ORANGE, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

LILA MARSHALL 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).

LILA MARSHALL at a glance

Quality data not reported

NPI registry status

Active

Issued 04/09/2021

NPI 1508446907

Primary specialty

Gynecologic Oncology Physician

Niche

1,360 US NPIs in this specialty

Medicare Part D claims

75 60% vs specialty avg

2023 prescription claims

Specialty avg: 188

Specialty distribution in California

How Gynecologic Oncology Physician compares to other specialties among California providers

California providers

Gynecologic Oncology Physician share within California

1. Gynecologic Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Gynecologic Oncology Physician share within California

Specialty board-certification context

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

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

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

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

LILA MARSHALL is a Gynecologic Oncology Physician provider practicing in ORANGE, California, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1508446907. 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.

LILA MARSHALL appears in the CMS NPPES registry as a Gynecologic Oncology Physician provider at 101 THE CITY DR S, ORANGE, CA, 92868, with a listed phone of (714) 456-8888. NPI 1508446907 was issued on 04/09/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MARSHALL 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 75 prescription claims written by this provider, covering 32 Medicare beneficiaries and totaling roughly $3K in drug spend, split 16% brand-name and 84% generic by claim count. 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.

Gynecologic Oncology Physician is a narrow specialty nationwide, with 1,360 enrolled providers across 49 states and an average of 188 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

101 THE CITY DR S
ORANGE, CA 92868

Provider Details

NPI 1508446907
Specialty Gynecologic Oncology Physician
Gender Female
NPI Issued 04/09/2021

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 LILA MARSHALL. To verify LILA MARSHALL'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.

Brand vs generic prescribing mix · Typical

LILA MARSHALL — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 75 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

75
Total Claims
$3K
Total Drug Cost
32
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
94
Total Day Supply
2,039
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$1K
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
62.5 years
Avg HCC Risk Score
1.31
Gender Split
100% female / 0% male
Age Distribution
<65: 11, 65-74: 13, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Ibuprofen
11

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

Gynecologic Oncology Physician Overview

How LILA MARSHALL fits within the Gynecologic Oncology Physician landscape nationally.

1,360
Gynecologic Oncology Physician Providers in US
49
States with Gynecologic Oncology Physician
188
Avg Claims per Provider

LILA MARSHALL's 75 claims are below the specialty average of 188.

Nearby Gynecologic Oncology Physician Providers in California

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

Compare Gynecologic Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is LILA MARSHALL's specialty?
LILA MARSHALL specializes in Gynecologic Oncology Physician and practices in ORANGE, California.
How much does LILA MARSHALL prescribe under Medicare Part D?
In 2023, LILA MARSHALL wrote 75 Medicare Part D claims totaling $3K in drug costs for 32 beneficiaries.
Where is LILA MARSHALL located?
LILA MARSHALL is located at 101 THE CITY DR S, ORANGE, CA, 92868. Phone: (714) 456-8888.
What is LILA MARSHALL's NPI number?
LILA MARSHALL's National Provider Identifier (NPI) is 1508446907, issued on 04/09/2021.
Does LILA MARSHALL prescribe more brand-name or generic drugs?
LILA MARSHALL's prescribing is 16% brand-name and 84% generic drugs by claim count, with $1K in brand drug costs.
How many Gynecologic Oncology Physician providers are there in the US?
There are 1,360 Gynecologic Oncology Physician providers across 49 states in the US. The average Gynecologic Oncology Physician provider writes 188 Medicare Part D claims per year.
What drugs does LILA MARSHALL prescribe most often?
Based on 2023 Medicare Part D data, LILA MARSHALL's most frequently prescribed drugs include Ibuprofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LILA MARSHALL accept Medicare?
LILA MARSHALL appears in CMS Medicare data with 75 Part D claims and 32 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LILA MARSHALL's credentials?
LILA MARSHALL's NPI is 1508446907. 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