2026 NPPES data Specialist NPI 1023016912 M.D.
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GEORGE GILLIAM, M.D.

Specialist in OWENSBORO, Kentucky. 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
556
Medicare Part D claims · 383 beneficiaries · Specialist avg: 1K
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

GEORGE GILLIAM, M.D. filed 556 Medicare Part D claims in 2023 as a Specialist in OWENSBORO, Kentucky, prescribing 81% generic.

556
Part D claims, 2023
81%
generic prescribing

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.

GEORGE GILLIAM, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

556 Top 34% higher than 66% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 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 GEORGE GILLIAM, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/13/2005

NPI 1023016912

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

556 62% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

Specialty distribution in Kentucky

How Specialist compares to other specialties among Kentucky providers

Kentucky providers

Specialist share within Kentucky

1. Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Specialist share within Kentucky

Specialty board-certification context

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

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

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

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

GEORGE GILLIAM, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 2200 E PARRISH AVE, OWENSBORO, KY, 42303, with a listed phone of (270) 691-9697. NPI 1023016912 was issued on 07/13/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GILLIAM 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 556 prescription claims written by this provider, covering 383 Medicare beneficiaries and totaling roughly $32K in drug spend, split 19% brand-name and 81% generic by claim count, with an opioid prescribing rate of 12.4%. 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.

Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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

2200 E PARRISH AVE
OWENSBORO, KY 42303

Provider Details

NPI 1023016912
Specialty Specialist
Credentials M.D.
Gender Male
NPI Issued 07/13/2005

Hospital and facility affiliations

Facilities where GEORGE GILLIAM, 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.

BRECKINRIDGE HEALTH, INC.
HARDINSBURG, KY
TRIGG COUNTY HOSPITAL, INC
CADIZ, KY

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

Brand vs generic prescribing mix · Typical

GEORGE GILLIAM, M.D. — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 556 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.

556
Total Claims
$32K
Total Drug Cost
383
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
666
Total Day Supply
9,685
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$20K
Generic Drug Cost
$12K
Opioid Claims
69 (12.4% rate)
Antibiotic Claims
25

Patient Demographics

Average Patient Age
70.5 years
Avg HCC Risk Score
0.95
Gender Split
49% female / 51% male
Age Distribution
<65: 46, 65-74: 232, 75-84: 94, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

What GEORGE GILLIAM, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
63
Omeprazole
57
Pantoprazole Sodium
46
Clenpiq
Sod Picosulf/Mag Ox/Citric Ac
21
Sucralfate
21
Dicyclomine Hcl
11
Esomeprazole Magnesium
11
Gavilyte-G
"Peg3350/Sod Sulf
N/A
Peg-3350 And Electrolytes
"Peg3350/Sod Sulf
N/A
Sod Sulf-Potass Sulf-Mag Sulf
"Sodium
N/A

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

Specialist Overview

How GEORGE GILLIAM, M.D. fits within the Specialist landscape nationally.

69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

GEORGE GILLIAM, M.D.'s 556 claims are below the specialty average of 1,474.

Nearby Specialist Providers in Kentucky

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

Compare Specialist nationally: see state-by-state distribution →

Frequently Asked Questions

What is GEORGE GILLIAM, M.D.'s specialty?
GEORGE GILLIAM, M.D. specializes in Specialist and practices in OWENSBORO, Kentucky. Credentials: M.D..
How much does GEORGE GILLIAM, M.D. prescribe under Medicare Part D?
In 2023, GEORGE GILLIAM, M.D. wrote 556 Medicare Part D claims totaling $32K in drug costs for 383 beneficiaries.
Where is GEORGE GILLIAM, M.D. located?
GEORGE GILLIAM, M.D. is located at 2200 E PARRISH AVE, OWENSBORO, KY, 42303. Phone: (270) 691-9697.
What is GEORGE GILLIAM, M.D.'s NPI number?
GEORGE GILLIAM, M.D.'s National Provider Identifier (NPI) is 1023016912, issued on 07/13/2005.
Does GEORGE GILLIAM, M.D. prescribe more brand-name or generic drugs?
GEORGE GILLIAM, M.D.'s prescribing is 19% brand-name and 81% generic drugs by claim count, with $20K in brand drug costs.
Does GEORGE GILLIAM, M.D. prescribe opioids?
Yes, GEORGE GILLIAM, M.D. had 69 opioid claims in 2023 with an opioid prescribing rate of 12.4%.
How many Specialist providers are there in the US?
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does GEORGE GILLIAM, M.D. prescribe most often?
Based on 2023 Medicare Part D data, GEORGE GILLIAM, M.D.'s most frequently prescribed drugs include Oxycodone-Acetaminophen, Omeprazole, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GEORGE GILLIAM, M.D. accept Medicare?
GEORGE GILLIAM, M.D. appears in CMS Medicare data with 556 Part D claims and 383 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GEORGE GILLIAM, M.D.'s credentials?
GEORGE GILLIAM, M.D.'s NPI is 1023016912 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