2026 NPPES data Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician NPI 1417988924 M.D.
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GERALD CHAPMAN, M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in COOKEVILLE, Tennessee. 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
16
Medicare Part D claims · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician avg: 128

What the federal data shows

GERALD CHAPMAN, M.D. filed 16 Medicare Part D claims in 2023 as a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in COOKEVILLE, Tennessee.

16
Part D claims, 2023

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.

GERALD CHAPMAN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

16 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 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

Board-eligible specialty (heuristic — not verified)

GERALD CHAPMAN, M.D. 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 GERALD CHAPMAN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/05/2006

NPI 1417988924

Primary specialty

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician

Mid-sized

5,062 US NPIs in this specialty

Medicare Part D claims

16 87% vs specialty avg

2023 prescription claims

Specialty avg: 128

Specialty distribution in Tennessee

How Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician compares to other specialties among Tennessee providers

Tennessee providers

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician share within Tennessee

1. Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician share within Tennessee

Specialty board-certification context

Estimated specialty board-certified rate — Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician ABMS/AOA estimate

Est. board-certified rate (Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Thoracic Surgery (Cardiothoracic Vascular Surgery) 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).

GERALD CHAPMAN, M.D. appears in the CMS NPPES registry as a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider holding M.D. credentials at 406 N WHITNEY AVE STE 5, COOKEVILLE, TN, 38501, with a listed phone of (931) 783-4269. NPI 1417988924 was issued on 07/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAPMAN 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 16 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $1K in drug spend. 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.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician is a mid-sized specialty nationwide, with 5,062 enrolled providers across 52 states and an average of 128 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

406 N WHITNEY AVE STE 5
COOKEVILLE, TN 38501

Provider Details

NPI 1417988924
Specialty Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
Credentials M.D.
Gender Male
NPI Issued 07/05/2006

Medicare Part D Prescribing Data

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

16
Total Claims
$1K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
16
Total Day Supply
192
Generic Drug Cost
$82

Patient Demographics

Average Patient Age
78.3 years
Avg HCC Risk Score
1.76

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Overview

How GERALD CHAPMAN, M.D. fits within the Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician landscape nationally.

5,062
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Providers in US
52
States with Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
128
Avg Claims per Provider

GERALD CHAPMAN, M.D.'s 16 claims are below the specialty average of 128.

Nearby Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Providers in Tennessee

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

Compare Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is GERALD CHAPMAN, M.D.'s specialty?
GERALD CHAPMAN, M.D. specializes in Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician and practices in COOKEVILLE, Tennessee. Credentials: M.D..
How much does GERALD CHAPMAN, M.D. prescribe under Medicare Part D?
In 2023, GERALD CHAPMAN, M.D. wrote 16 Medicare Part D claims totaling $1K in drug costs for N/A beneficiaries.
Where is GERALD CHAPMAN, M.D. located?
GERALD CHAPMAN, M.D. is located at 406 N WHITNEY AVE STE 5, COOKEVILLE, TN, 38501. Phone: (931) 783-4269.
What is GERALD CHAPMAN, M.D.'s NPI number?
GERALD CHAPMAN, M.D.'s National Provider Identifier (NPI) is 1417988924, issued on 07/05/2006.
How many Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers are there in the US?
There are 5,062 Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers across 52 states in the US. The average Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider writes 128 Medicare Part D claims per year.
Does GERALD CHAPMAN, M.D. accept Medicare?
GERALD CHAPMAN, M.D. appears in CMS Medicare data with 16 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GERALD CHAPMAN, M.D.'s credentials?
GERALD CHAPMAN, M.D.'s NPI is 1417988924 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