2026 NPPES data Nurse Practitioner NPI 1558016709
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KATHERINE BROUWER

Nurse Practitioner in BELL GARDENS, California. 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
1K
Medicare Part D claims · 364 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$274.16
8 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

KATHERINE BROUWER filed 1,281 Medicare Part D claims in 2023 as a Nurse Practitioner in BELL GARDENS, California, prescribing 93% generic.

1K
Part D claims, 2023
93%
generic prescribing
$274.16
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.

KATHERINE BROUWER's Medicare Part D volume vs every U.S. prescriber

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

1,281 Top 22% higher than 78% 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%). This entry sits in this band. 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

What does the federal data show about KATHERINE BROUWER?

Quality data not reported

NPI registry status

Active

Issued 02/16/2022

NPI 1558016709

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

1,281 18% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in California

How Nurse Practitioner compares to other specialties among California providers

California providers

Nurse Practitioner share within California

1. Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nurse Practitioner share within California

Specialty board-certification context

Estimated specialty board-certified rate — Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Nurse Practitioner) — 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).

KATHERINE BROUWER appears in the CMS NPPES registry as a Nurse Practitioner provider at 6501 GARFIELD AVE, BELL GARDENS, CA, 90201, with a listed phone of (562) 927-6974. NPI 1558016709 was issued on 02/16/2022. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BROUWER 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 1,281 prescription claims written by this provider, covering 364 Medicare beneficiaries and totaling roughly $51K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 4.9%. 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.

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

6501 GARFIELD AVE
BELL GARDENS, CA 90201

Provider Details

NPI 1558016709
Specialty Nurse Practitioner
Gender Female
NPI Issued 02/16/2022

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 KATHERINE BROUWER. Source: openpaymentsdata.cms.gov.

Total received

$274

Largest payer

Galderma Laboratories, L.P.

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.

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to KATHERINE BROUWER. To verify KATHERINE BROUWER's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

KATHERINE BROUWER — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 1,281 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.

1,281
Total Claims
$51K
Total Drug Cost
364
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,943
Total Day Supply
47,257
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$33K
Generic Drug Cost
$18K
Opioid Claims
63 (4.9% rate)
Antibiotic Claims
257

Patient Demographics

Average Patient Age
74.9 years
Avg HCC Risk Score
1.10
Gender Split
61% female / 39% male

Top Prescribed Drugs (Medicare Part D)

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

What KATHERINE BROUWER 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
Azithromycin
66
Cefuroxime
Cefuroxime Axetil
49
Cephalexin
46
Methylprednisolone
41
Losartan Potassium
35
Prednisone
35
Alprazolam
32
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
30
Amlodipine Besylate
28
Fluticasone Propionate
27

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

Nurse Practitioner Overview

How KATHERINE BROUWER 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

KATHERINE BROUWER's 1,281 claims are above the specialty average of 1,084.

Nearby Nurse Practitioner Providers in California

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

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

Frequently Asked Questions

What is KATHERINE BROUWER's specialty?
KATHERINE BROUWER specializes in Nurse Practitioner and practices in BELL GARDENS, California.
How much does KATHERINE BROUWER prescribe under Medicare Part D?
In 2023, KATHERINE BROUWER wrote 1,281 Medicare Part D claims totaling $51K in drug costs for 364 beneficiaries.
Where is KATHERINE BROUWER located?
KATHERINE BROUWER is located at 6501 GARFIELD AVE, BELL GARDENS, CA, 90201. Phone: (562) 927-6974.
What is KATHERINE BROUWER's NPI number?
KATHERINE BROUWER's National Provider Identifier (NPI) is 1558016709, issued on 02/16/2022.
Does KATHERINE BROUWER prescribe more brand-name or generic drugs?
KATHERINE BROUWER's prescribing is 7% brand-name and 93% generic drugs by claim count, with $33K in brand drug costs.
Does KATHERINE BROUWER prescribe opioids?
Yes, KATHERINE BROUWER had 63 opioid claims in 2023 with an opioid prescribing rate of 4.9%.
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 KATHERINE BROUWER prescribe most often?
Based on 2023 Medicare Part D data, KATHERINE BROUWER's most frequently prescribed drugs include Azithromycin, Cefuroxime, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATHERINE BROUWER accept Medicare?
KATHERINE BROUWER appears in CMS Medicare data with 1,281 Part D claims and 364 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATHERINE BROUWER's credentials?
KATHERINE BROUWER's NPI is 1558016709. 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