2026 NPPES data Gynecologic Oncology Physician NPI 1649364746 MD
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ROBERT SEGNIT, MD

Gynecologic Oncology Physician in LA MESA, 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.

What the federal data shows

ROBERT SEGNIT, MD is a Gynecologic Oncology Physician in LA MESA, California, listed in the federal CMS National Provider Identifier registry.

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)

ROBERT SEGNIT, MD 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 ROBERT SEGNIT, MD?

Quality data not reported

NPI registry status

Active

Issued 10/03/2006

NPI 1649364746

Primary specialty

Gynecologic Oncology Physician

Niche

1,360 US NPIs in this specialty

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).

ROBERT SEGNIT, MD is a Gynecologic Oncology Physician provider practicing in LA MESA, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1649364746. 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.

ROBERT SEGNIT, MD appears in the CMS NPPES registry as a Gynecologic Oncology Physician provider holding MD credentials at 8851 CENTER DR, LA MESA, CA, 91942, with a listed phone of (619) 463-7775. NPI 1649364746 was issued on 10/03/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SEGNIT 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 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 Gynecologic Oncology Physician providers operate outside Part D entirely.

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

8851 CENTER DR
LA MESA, CA 91942

Provider Details

NPI 1649364746
Specialty Gynecologic Oncology Physician
Credentials MD
Gender Male
NPI Issued 10/03/2006

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 ROBERT SEGNIT, MD. To verify ROBERT SEGNIT, MD'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.

Gynecologic Oncology Physician Overview

How ROBERT SEGNIT, MD 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

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 SEGNIT.

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

Frequently Asked Questions

What is ROBERT SEGNIT, MD's specialty?
ROBERT SEGNIT, MD specializes in Gynecologic Oncology Physician and practices in LA MESA, California. Credentials: MD.
Where is ROBERT SEGNIT, MD located?
ROBERT SEGNIT, MD is located at 8851 CENTER DR, LA MESA, CA, 91942. Phone: (619) 463-7775.
What is ROBERT SEGNIT, MD's NPI number?
ROBERT SEGNIT, MD's National Provider Identifier (NPI) is 1649364746, issued on 10/03/2006.
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.
Does ROBERT SEGNIT, MD accept Medicare?
ROBERT SEGNIT, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ROBERT SEGNIT, MD's credentials?
ROBERT SEGNIT, MD's NPI is 1649364746 with credentials MD. 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.
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