2026 NPPES data Adult Medicine Physician NPI 1689619678 M.D.
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GEORGE MCCASKILL, M.D.

Adult Medicine Physician in BRUNSWICK, Georgia. 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
168
Medicare Part D claims · 63 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
▼ 8 pts below national avg 83.1 · [object Object]
What the federal data reveals: GEORGE MCCASKILL, M.D. is a Adult Medicine Physician ([object Object]) practicing in BRUNSWICK, Georgia with a Medicare Part D prescribing footprint of 168 claims across 63 beneficiaries — 9% brand-name prescribing . Their CMS MIPS Final Score of 75/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: GEORGE MCCASKILL, M.D. reported a CMS MIPS final score of 75 out of 100, below the 83.1 national average, and filed 168 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

GEORGE MCCASKILL, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

GEORGE MCCASKILL, M.D. at a glance

Below national average

NPI registry status

Active

Issued 06/17/2006

NPI 1689619678

Primary specialty

Adult Medicine Physician

Niche

2,481 US NPIs in this specialty

Medicare Part D claims

168 94% vs specialty avg

2023 prescription claims

Specialty avg: 2,807

MIPS final score

75/100 8.099999999999994% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Georgia

How Adult Medicine Physician compares to other specialties among Georgia providers

Georgia providers

Adult Medicine Physician share within Georgia

1. Adult Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Adult Medicine Physician share within Georgia

Medicare quality performance — MIPS

GEORGE MCCASKILL, M.D.'s 2023 MIPS final score plotted against the Adult Medicine Physician national average

Below national average
MIPS Final Score
75/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Adult Medicine Physician) — 75/100 vs national avg 83.1

0%100%National avg83%75%
MIPS final score (Adult Medicine Physician) — 75/100 vs national avg 83.1

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 MCCASKILL, M.D. is a Adult Medicine Physician provider practicing in BRUNSWICK, Georgia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1689619678. 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.

GEORGE MCCASKILL, M.D. appears in the CMS NPPES registry as a Adult Medicine Physician provider holding M.D. credentials at 2415 PARKWOOD DRIVE, BRUNSWICK, GA, 31520, with a listed phone of (912) 466-7187. NPI 1689619678 was issued on 06/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MCCASKILL 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 168 prescription claims written by this provider, covering 63 Medicare beneficiaries and totaling roughly $8K in drug spend, split 9% brand-name and 91% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75/100 for the 2023 performance year, compared with the national average of 83.1.

Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 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

2415 PARKWOOD DRIVE
BRUNSWICK, GA 31520

Provider Details

NPI 1689619678
Specialty Adult Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 06/17/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

75
Final Score
Avg: 83.1

Reporting: Individual

Hospital and facility affiliations

Facilities where GEORGE MCCASKILL, 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.

CARECONNECT HEALTH INC
RICHLAND, GA
COOPERATIVE HEALTHCARE SERVICES INC
BRUNSWICK, GA

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 · Generic-heavy

GEORGE MCCASKILL, M.D. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 168 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.

168
Total Claims
$8K
Total Drug Cost
63
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
181
Total Day Supply
3,427
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$6K
Generic Drug Cost
$2K
Antibiotic Claims
30

Patient Demographics

Average Patient Age
72.1 years
Avg HCC Risk Score
3.07
Gender Split
60% female / 40% male

Adult Medicine Physician Overview

How GEORGE MCCASKILL, M.D. fits within the Adult Medicine Physician landscape nationally.

2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider

GEORGE MCCASKILL, M.D.'s 168 claims are below the specialty average of 2,807.

Nearby Adult Medicine Physician Providers in Georgia

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

Compare Adult Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GEORGE MCCASKILL, M.D.'s specialty?
GEORGE MCCASKILL, M.D. specializes in Adult Medicine Physician and practices in BRUNSWICK, Georgia. Credentials: M.D..
How much does GEORGE MCCASKILL, M.D. prescribe under Medicare Part D?
In 2023, GEORGE MCCASKILL, M.D. wrote 168 Medicare Part D claims totaling $8K in drug costs for 63 beneficiaries.
What is GEORGE MCCASKILL, M.D.'s Medicare quality score?
GEORGE MCCASKILL, M.D. has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is GEORGE MCCASKILL, M.D. located?
GEORGE MCCASKILL, M.D. is located at 2415 PARKWOOD DRIVE, BRUNSWICK, GA, 31520. Phone: (912) 466-7187.
What is GEORGE MCCASKILL, M.D.'s NPI number?
GEORGE MCCASKILL, M.D.'s National Provider Identifier (NPI) is 1689619678, issued on 06/17/2006.
Does GEORGE MCCASKILL, M.D. prescribe more brand-name or generic drugs?
GEORGE MCCASKILL, M.D.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $6K in brand drug costs.
How many Adult Medicine Physician providers are there in the US?
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
Does GEORGE MCCASKILL, M.D. accept Medicare?
GEORGE MCCASKILL, M.D. appears in CMS Medicare data with 168 Part D claims and 63 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GEORGE MCCASKILL, M.D.'s credentials?
GEORGE MCCASKILL, M.D.'s NPI is 1689619678 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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