2026 NPPES data Nurse Practitioner NPI 1588863658 ANP
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Michelle Horrocks, ANP

Nurse Practitioner in Saint Louis, Missouri.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 87,227 in Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
236
Medicare Part D claims · 65 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.3/100
▼ 4 pts below national avg 83.1 · Above neutral
Industry payments
$122.62
2 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Michelle Horrocks, ANP reported a CMS MIPS final score of 79.3/100 - below the 83.1 national average - and filed 236 Medicare Part D claims in 2023.

79.3/100
MIPS score · -4 vs avg
236
Part D claims, 2023
86%
generic prescribing
$122.62
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.

Michelle Horrocks, ANP's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

79 30th percentile higher than 30% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Where Michelle Horrocks, ANP sits

This provider among nurse practitioner peers

Across the 13,476 nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Michelle Horrocks, ANP writes more Part D claims than 38% of them and scores higher on MIPS quality than 30% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.148.372.496.6Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 65Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 88Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 18Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 83Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 45Michelle Horrocks, ANP-Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 30
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one nurse practitioner peer from a representative sample of 60; the gold marker is Michelle Horrocks, ANP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Michelle Horrocks, ANP?

Near national average

NPI registry status

Active

Issued 07/17/2007

NPI 1588863658

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

236 78% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

MIPS final score

79.3/100 3.8 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in Missouri

How Nurse Practitioner compares to other specialties among Missouri providers

Missouri providers
Pharmacist - 4.8%Pharmacist4.8%Professional Counselor - 4.8%Professional Counselor4.8%Speech-Language Pathologist - 4.5%Speech-Language Pathologist4.5%Clinical Social Worker - 4.5%Clinical Social Worker4.5%Family Nurse Practitioner - 4.3%Family Nurse Practitioner4.3%Physical Therapist - 4%Physical Therapist4%Nurse Practitioner - 1.4%Nurse Practitioner1.4%
Largest specialties in Missouri (% of in-state providers)

Medicare quality performance, MIPS

Michelle Horrocks, ANP's 2023 MIPS final score plotted against the Nurse Practitioner national average

Near national average
MIPS Final Score
79.3/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nurse Practitioner) - 79.3/100 vs national avg 83.1

0%100%National avg83%79.3%
MIPS final score (Nurse Practitioner) - 79.3/100 vs national avg 83.1
How MIPS and board certification work

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).

Michelle Horrocks, ANP appears in the CMS NPPES registry as a Nurse Practitioner provider holding ANP credentials at 1 BARNES JEWISH HOSPITAL PLZ, Saint Louis, MO, 63110, with a listed phone of (314) 362-1291. NPI 1588863658 was issued on 07/17/2007.

Medicare Part D records for calendar year 2023 show 236 prescription claims written by this provider, covering 65 Medicare beneficiaries and totaling roughly $17K in drug spend, split 14% brand-name and 86% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.3/100 for the 2023 performance year (Quality 71.5, Cost 59.5), compared with the national average of 83.1.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 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

1 BARNES JEWISH HOSPITAL PLZ
Saint Louis, MO 63110

Provider Details

NPI 1588863658
Specialty Nurse Practitioner
Credentials ANP
Gender Female
NPI Issued 07/17/2007

CMS Quality Score (MIPS)

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

79.292
Final Score
Avg: 83.1
71.46
Quality
59.5132
Cost
100
Promoting Interoperability

Reporting: Group practice

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 Michelle Horrocks, ANP. Source: openpaymentsdata.cms.gov.

Total received

$123

Largest payer

ABIOMED

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

Michelle Horrocks, ANP - brand share 14.0%
Nurse Practitioner average

14% brand-name claims vs 86% generic, on 236 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.

236
Total Claims
$17K
Total Drug Cost
65
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
287
Total Day Supply
8,162
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$14K
Generic Drug Cost
$3K
Antibiotic Claims
21

Patient Demographics

Average Patient Age
67.1 years
Avg HCC Risk Score
4.05
Gender Split
45% female / 55% male
Age Distribution
<65: 22, 65-74: 25, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What Michelle Horrocks, ANP 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
Metoprolol Succinate
17
Potassium Chloride
16
Furosemide
14
Pantoprazole Sodium
13
Warfarin Sodium
13
Atorvastatin Calcium
12
Sotalol
Sotalol Hcl
12
Spironolactone
12
Clopidogrel
Clopidogrel Bisulfate
11

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

Nurse Practitioner Overview

How Michelle Horrocks, ANP fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

Michelle Horrocks, ANP's 236 claims are below the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Missouri

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

Compare Nurse Practitioner nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Missouri medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Nurse Practitioner peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Michelle Horrocks, ANP's specialty?
Michelle Horrocks, ANP specializes in Nurse Practitioner and practices in Saint Louis, Missouri. Credentials: ANP.
How much does Michelle Horrocks, ANP prescribe under Medicare Part D?
In 2023, Michelle Horrocks, ANP wrote 236 Medicare Part D claims totaling $17K in drug costs for 65 beneficiaries.
What is Michelle Horrocks, ANP's Medicare quality score?
Michelle Horrocks, ANP has a CMS MIPS Final Score of 79.3/100 (Quality: 71.5, Cost: 59.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Michelle Horrocks, ANP located?
Michelle Horrocks, ANP is located at 1 BARNES JEWISH HOSPITAL PLZ, Saint Louis, MO, 63110. Phone: (314) 362-1291.
What is Michelle Horrocks, ANP's NPI number?
Michelle Horrocks, ANP's National Provider Identifier (NPI) is 1588863658, issued on 07/17/2007.
Does Michelle Horrocks, ANP prescribe more brand-name or generic drugs?
Michelle Horrocks, ANP's prescribing is 14% brand-name and 86% generic drugs by claim count, with $14K in brand drug costs.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does Michelle Horrocks, ANP prescribe most often?
Based on 2023 Medicare Part D data, Michelle Horrocks, ANP's most frequently prescribed drugs include Metoprolol Succinate, Potassium Chloride, Furosemide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michelle Horrocks, ANP accept Medicare?
Michelle Horrocks, ANP appears in CMS Medicare data with 236 Part D claims and 65 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michelle Horrocks, ANP's credentials?
Michelle Horrocks, ANP's NPI is 1588863658 with credentials ANP. 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

View source datasets and methodology notes
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

Compiled from official public sources by the PlainDoctor editorial team.