2026 NPPES data Gynecologic Oncology Physician NPI 1639195944 MD
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RANDALL GIBB, MD

Gynecologic Oncology Physician in SAINT LOUIS, Missouri. 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
339
Medicare Part D claims · 72 beneficiaries · Gynecologic Oncology Physician avg: 188
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$7.0K
8 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: RANDALL GIBB, MD is a Gynecologic Oncology Physician ([object Object]) practicing in SAINT LOUIS, Missouri with a Medicare Part D prescribing footprint of 339 claims across 72 beneficiaries — 7% brand-name prescribing . Industry payments of $7.0K across 8 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: RANDALL GIBB, MD filed 339 Medicare Part D claims in 2023 across SAINT LOUIS, Missouri. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

RANDALL GIBB, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

RANDALL GIBB, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 07/14/2006

NPI 1639195944

Primary specialty

Gynecologic Oncology Physician

Niche

1,360 US NPIs in this specialty

Medicare Part D claims

339 80% vs specialty avg

2023 prescription claims

Specialty avg: 188

Specialty distribution in Missouri

How Gynecologic Oncology Physician compares to other specialties among Missouri providers

Missouri providers

Gynecologic Oncology Physician share within Missouri

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

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).

RANDALL GIBB, MD is a Gynecologic Oncology Physician provider practicing in SAINT LOUIS, Missouri, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1639195944. 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.

RANDALL GIBB, MD appears in the CMS NPPES registry as a Gynecologic Oncology Physician provider holding MD credentials at 1031 BELLEVUE AVE STE 400, SAINT LOUIS, MO, 63117, with a listed phone of (314) 977-7455. NPI 1639195944 was issued on 07/14/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GIBB 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 339 prescription claims written by this provider, covering 72 Medicare beneficiaries and totaling roughly $282K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 15.3%. 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

1031 BELLEVUE AVE STE 400
SAINT LOUIS, MO 63117

Provider Details

NPI 1639195944
Specialty Gynecologic Oncology Physician
Credentials MD
Gender Male
NPI Issued 07/14/2006

Hospital and facility affiliations

Facilities where RANDALL GIBB, MD 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.

SSM HEALTH CARE GROUP
SAINT LOUIS, MO

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 RANDALL GIBB, MD. Source: openpaymentsdata.cms.gov.

Total received

$7.0K

Largest payer

Myriad Genetic Laboratories, Inc.

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.

Brand vs generic prescribing mix · Generic-heavy

RANDALL GIBB, MD — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 339 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.

339
Total Claims
$282K
Total Drug Cost
72
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
408
Total Day Supply
8,561
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$278K
Generic Drug Cost
$5K
Opioid Claims
52 (15.3% rate)
Antibiotic Claims
20

Patient Demographics

Average Patient Age
68.4 years
Avg HCC Risk Score
2.08
Gender Split
100% female / 0% male
Age Distribution
<65: 19, 65-74: 33, 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
Ondansetron Hcl
38
Oxycodone Hcl
31
Lidocaine-Prilocaine
Lidocaine/Prilocaine
23
Lorazepam
19
Potassium Chloride
16
Diphenoxylate-Atropine
Diphenoxylate Hcl/Atropine
13
Rubraca
Rucaparib Camsylate
12
Ciprofloxacin Hcl
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 RANDALL GIBB, 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

RANDALL GIBB, MD's 339 claims are above the specialty average of 188.

Nearby Gynecologic Oncology Physician Providers in Missouri

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

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

Frequently Asked Questions

What is RANDALL GIBB, MD's specialty?
RANDALL GIBB, MD specializes in Gynecologic Oncology Physician and practices in SAINT LOUIS, Missouri. Credentials: MD.
How much does RANDALL GIBB, MD prescribe under Medicare Part D?
In 2023, RANDALL GIBB, MD wrote 339 Medicare Part D claims totaling $282K in drug costs for 72 beneficiaries.
Where is RANDALL GIBB, MD located?
RANDALL GIBB, MD is located at 1031 BELLEVUE AVE STE 400, SAINT LOUIS, MO, 63117. Phone: (314) 977-7455.
What is RANDALL GIBB, MD's NPI number?
RANDALL GIBB, MD's National Provider Identifier (NPI) is 1639195944, issued on 07/14/2006.
Does RANDALL GIBB, MD prescribe more brand-name or generic drugs?
RANDALL GIBB, MD's prescribing is 7% brand-name and 93% generic drugs by claim count, with $278K in brand drug costs.
Does RANDALL GIBB, MD prescribe opioids?
Yes, RANDALL GIBB, MD had 52 opioid claims in 2023 with an opioid prescribing rate of 15.3%.
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 RANDALL GIBB, MD prescribe most often?
Based on 2023 Medicare Part D data, RANDALL GIBB, MD's most frequently prescribed drugs include Ondansetron Hcl, Oxycodone Hcl, Lidocaine-Prilocaine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does RANDALL GIBB, MD accept Medicare?
RANDALL GIBB, MD appears in CMS Medicare data with 339 Part D claims and 72 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RANDALL GIBB, MD's credentials?
RANDALL GIBB, MD's NPI is 1639195944 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.
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