2026 NPPES data Medical Physician Assistant NPI 1396315966
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SHANNON HORSTMAN

Medical Physician Assistant in CLARKSVILLE, 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
3K
Medicare Part D claims · 311 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.2K
61 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

SHANNON HORSTMAN filed 2,784 Medicare Part D claims in 2023 as a Medical Physician Assistant in CLARKSVILLE, Tennessee, prescribing 86% generic.

3K
Part D claims, 2023
86%
generic prescribing
$1.2K
industry payments (Sunshine Act)

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.

SHANNON HORSTMAN's Medicare Part D volume vs every U.S. prescriber

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

2,784 Top 12% higher than 88% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 SHANNON HORSTMAN?

Quality data not reported

NPI registry status

Active

Issued 06/28/2021

NPI 1396315966

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

2,784 158% 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).

SHANNON HORSTMAN appears in the CMS NPPES registry as a Medical Physician Assistant provider at 2690 MADISON ST STE 130, CLARKSVILLE, TN, 37043, with a listed phone of (931) 245-1701. NPI 1396315966 was issued on 06/28/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HORSTMAN 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 2,784 prescription claims written by this provider, covering 311 Medicare beneficiaries and totaling roughly $396K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 1.4%. 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.

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

2690 MADISON ST STE 130
CLARKSVILLE, TN 37043

Provider Details

NPI 1396315966
Specialty Medical Physician Assistant
Gender Female
NPI Issued 06/28/2021

Hospital and facility affiliations

Facilities where SHANNON HORSTMAN 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.

ELITE PRIMARY CARE LLC
CLARKSVILLE, TN
SELECT PHYSICAL THERAPY HOLDINGS INC
CLARKSVILLE, 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).

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 SHANNON HORSTMAN. Source: openpaymentsdata.cms.gov.

Total received

$1.2K

Largest payer

Novo Nordisk 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 · Typical

SHANNON HORSTMAN — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 2,784 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.

2,784
Total Claims
$396K
Total Drug Cost
311
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,484
Total Day Supply
155,690
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$340K
Generic Drug Cost
$55K
Opioid Claims
40 (1.4% rate)
Antibiotic Claims
123

Patient Demographics

Average Patient Age
69.8 years
Avg HCC Risk Score
1.34
Gender Split
71% female / 29% male

Top Prescribed Drugs (Medicare Part D)

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

What SHANNON HORSTMAN 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
Rosuvastatin Calcium
129
Gabapentin
111
Omeprazole
88
Prednisone
74
Levothyroxine Sodium
71
Lisinopril
69
Alprazolam
57
Atorvastatin Calcium
56
Losartan Potassium
53
Metformin Hcl Er
Metformin Hcl
53

* 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 SHANNON HORSTMAN 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

SHANNON HORSTMAN's 2,784 claims are above 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 HORSTMAN.

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

Frequently Asked Questions

What is SHANNON HORSTMAN's specialty?
SHANNON HORSTMAN specializes in Medical Physician Assistant and practices in CLARKSVILLE, Tennessee.
How much does SHANNON HORSTMAN prescribe under Medicare Part D?
In 2023, SHANNON HORSTMAN wrote 2,784 Medicare Part D claims totaling $396K in drug costs for 311 beneficiaries.
Where is SHANNON HORSTMAN located?
SHANNON HORSTMAN is located at 2690 MADISON ST STE 130, CLARKSVILLE, TN, 37043. Phone: (931) 245-1701.
What is SHANNON HORSTMAN's NPI number?
SHANNON HORSTMAN's National Provider Identifier (NPI) is 1396315966, issued on 06/28/2021.
Does SHANNON HORSTMAN prescribe more brand-name or generic drugs?
SHANNON HORSTMAN's prescribing is 14% brand-name and 86% generic drugs by claim count, with $340K in brand drug costs.
Does SHANNON HORSTMAN prescribe opioids?
Yes, SHANNON HORSTMAN had 40 opioid claims in 2023 with an opioid prescribing rate of 1.4%.
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 SHANNON HORSTMAN prescribe most often?
Based on 2023 Medicare Part D data, SHANNON HORSTMAN's most frequently prescribed drugs include Rosuvastatin Calcium, Gabapentin, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SHANNON HORSTMAN accept Medicare?
SHANNON HORSTMAN appears in CMS Medicare data with 2,784 Part D claims and 311 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SHANNON HORSTMAN's credentials?
SHANNON HORSTMAN's NPI is 1396315966. 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