2026 NPPES data Medical Physician Assistant NPI 1427146539 MD
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JAMES ABERNATHY, MD

Medical Physician Assistant in MORRISTOWN, 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
465
Medicare Part D claims · 136 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: JAMES ABERNATHY, MD is a Medical Physician Assistant ([object Object]) practicing in MORRISTOWN, Tennessee with a Medicare Part D prescribing footprint of 465 claims across 136 beneficiaries — 15% brand-name prescribing .

What stands out: JAMES ABERNATHY, MD filed 465 Medicare Part D claims in 2023 across MORRISTOWN, Tennessee. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

JAMES ABERNATHY, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 10/11/2006

NPI 1427146539

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

465 57% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Tennessee

How Medical Physician Assistant compares to other specialties among Tennessee providers

Tennessee providers

Medical Physician Assistant share within Tennessee

1. Medical Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Medical Physician Assistant share within Tennessee

Specialty board-certification context

Estimated specialty board-certified rate — Medical Physician Assistant (ABMS / AOA reference)

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

Est. board-certified rate (Medical Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Medical Physician Assistant) — 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).

JAMES ABERNATHY, MD is a Medical Physician Assistant provider practicing in MORRISTOWN, Tennessee, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1427146539. 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.

JAMES ABERNATHY, MD appears in the CMS NPPES registry as a Medical Physician Assistant provider holding MD credentials at 908 W 4TH NORTH ST, MORRISTOWN, TN, 37814, with a listed phone of (423) 736-9474. NPI 1427146539 was issued on 10/11/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ABERNATHY 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 465 prescription claims written by this provider, covering 136 Medicare beneficiaries and totaling roughly $39K in drug spend, split 15% brand-name and 85% generic by claim count, with an opioid prescribing rate of 7.1%. 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.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

908 W 4TH NORTH ST
MORRISTOWN, TN 37814

Provider Details

NPI 1427146539
Specialty Medical Physician Assistant
Credentials MD
Gender Male
NPI Issued 10/11/2006

Hospital and facility affiliations

Facilities where JAMES ABERNATHY, 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.

HOSPITAL MEDICINE SERVICES OF TENNESSEE PC
MORRISTOWN, TN

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

JAMES ABERNATHY, MD — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 465 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.

465
Total Claims
$39K
Total Drug Cost
136
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
510
Total Day Supply
11,559
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$27K
Generic Drug Cost
$11K
Opioid Claims
33 (7.1% rate)
Antibiotic Claims
62

Patient Demographics

Average Patient Age
69.4 years
Avg HCC Risk Score
2.55
Gender Split
53% female / 47% male
Age Distribution
<65: 37, 65-74: 54, 75-84: 33, 85+: 12

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
29
Eliquis
Apixaban
26
Metoprolol Tartrate
26
Amlodipine Besylate
20
Cefdinir
19
Carvedilol
17
Oxycodone Hcl
17
Cephalexin
13
Lisinopril
13

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

Medical Physician Assistant Overview

How JAMES ABERNATHY, MD fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

JAMES ABERNATHY, MD's 465 claims are below the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Tennessee

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

Compare Medical Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is JAMES ABERNATHY, MD's specialty?
JAMES ABERNATHY, MD specializes in Medical Physician Assistant and practices in MORRISTOWN, Tennessee. Credentials: MD.
How much does JAMES ABERNATHY, MD prescribe under Medicare Part D?
In 2023, JAMES ABERNATHY, MD wrote 465 Medicare Part D claims totaling $39K in drug costs for 136 beneficiaries.
Where is JAMES ABERNATHY, MD located?
JAMES ABERNATHY, MD is located at 908 W 4TH NORTH ST, MORRISTOWN, TN, 37814. Phone: (423) 736-9474.
What is JAMES ABERNATHY, MD's NPI number?
JAMES ABERNATHY, MD's National Provider Identifier (NPI) is 1427146539, issued on 10/11/2006.
Does JAMES ABERNATHY, MD prescribe more brand-name or generic drugs?
JAMES ABERNATHY, MD's prescribing is 15% brand-name and 85% generic drugs by claim count, with $27K in brand drug costs.
Does JAMES ABERNATHY, MD prescribe opioids?
Yes, JAMES ABERNATHY, MD had 33 opioid claims in 2023 with an opioid prescribing rate of 7.1%.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does JAMES ABERNATHY, MD prescribe most often?
Based on 2023 Medicare Part D data, JAMES ABERNATHY, MD's most frequently prescribed drugs include Atorvastatin Calcium, Eliquis, Metoprolol Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JAMES ABERNATHY, MD accept Medicare?
JAMES ABERNATHY, MD appears in CMS Medicare data with 465 Part D claims and 136 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JAMES ABERNATHY, MD's credentials?
JAMES ABERNATHY, MD's NPI is 1427146539 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