2026 NPPES data General Practice Physician NPI 1326464934
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COLEEN KORZEN

General Practice Physician in WEST CHESTER, Pennsylvania. 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
96
Medicare Part D claims · 52 beneficiaries · General Practice Physician avg: 3K
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$157.93
8 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

COLEEN KORZEN filed 96 Medicare Part D claims in 2023 as a General Practice Physician in WEST CHESTER, Pennsylvania, prescribing 81% generic.

96
Part D claims, 2023
81%
generic prescribing
Likely
board-certified (heuristic)

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.

COLEEN KORZEN's Medicare Part D volume vs every U.S. prescriber

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

96 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 certification likely (heuristic — not verified)

COLEEN KORZEN practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about COLEEN KORZEN?

Quality data not reported

NPI registry status

Active

Issued 03/07/2014

NPI 1326464934

Primary specialty

General Practice Physician

Mid-sized

16,677 US NPIs in this specialty

Medicare Part D claims

96 97% vs specialty avg

2023 prescription claims

Specialty avg: 2,872

Specialty distribution in Pennsylvania

How General Practice Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

General Practice Physician share within Pennsylvania

1. General Practice Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
General Practice Physician share within Pennsylvania

Specialty board-certification context

Estimated specialty board-certified rate — General Practice Physician (ABMS / AOA reference)

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

Est. board-certified rate (General Practice Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (General Practice 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).

COLEEN KORZEN is a General Practice Physician provider practicing in WEST CHESTER, Pennsylvania, according to the CMS National Plan and Provider Enumeration System (NPPES). NPI: 1326464934. 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.

COLEEN KORZEN appears in the CMS NPPES registry as a General Practice Physician provider at 915 OLD FERN HILL RD STE 6600, WEST CHESTER, PA, 19380, with a listed phone of (610) 692-3434. NPI 1326464934 was issued on 03/07/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KORZEN 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 96 prescription claims written by this provider, covering 52 Medicare beneficiaries and totaling roughly $11K in drug spend, split 19% brand-name and 81% generic by claim count. 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.

General Practice Physician is a mid-sized specialty nationwide, with 16,677 enrolled providers across 56 states and an average of 2,872 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

915 OLD FERN HILL RD STE 6600
WEST CHESTER, PA 19380

Provider Details

NPI 1326464934
Specialty General Practice Physician
Gender Female
NPI Issued 03/07/2014

Hospital and facility affiliations

Facilities where COLEEN KORZEN 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.

REGIONAL WOMENS HEALTH GROUP LLC
WEST CHESTER, PA

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 COLEEN KORZEN. Source: openpaymentsdata.cms.gov.

Total received

$158

Largest payer

Exeltis, USA 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.

License & disciplinary context — Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 — they are NOT specific to COLEEN KORZEN. To verify COLEEN KORZEN's current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

COLEEN KORZEN — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 96 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.

96
Total Claims
$11K
Total Drug Cost
52
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
159
Total Day Supply
3,790
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$7K
Generic Drug Cost
$4K
Antibiotic Claims
13

Patient Demographics

Average Patient Age
69.9 years
Avg HCC Risk Score
0.86
Gender Split
100% female / 0% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Estradiol
16
Premarin
"Estrogens
N/A

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

General Practice Physician Overview

How COLEEN KORZEN fits within the General Practice Physician landscape nationally.

16,677
General Practice Physician Providers in US
56
States with General Practice Physician
2,872
Avg Claims per Provider

COLEEN KORZEN's 96 claims are below the specialty average of 2,872.

Nearby General Practice Physician Providers in Pennsylvania

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

Compare General Practice Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is COLEEN KORZEN's specialty?
COLEEN KORZEN specializes in General Practice Physician and practices in WEST CHESTER, Pennsylvania.
How much does COLEEN KORZEN prescribe under Medicare Part D?
In 2023, COLEEN KORZEN wrote 96 Medicare Part D claims totaling $11K in drug costs for 52 beneficiaries.
Where is COLEEN KORZEN located?
COLEEN KORZEN is located at 915 OLD FERN HILL RD STE 6600, WEST CHESTER, PA, 19380. Phone: (610) 692-3434.
What is COLEEN KORZEN's NPI number?
COLEEN KORZEN's National Provider Identifier (NPI) is 1326464934, issued on 03/07/2014.
Does COLEEN KORZEN prescribe more brand-name or generic drugs?
COLEEN KORZEN's prescribing is 19% brand-name and 81% generic drugs by claim count, with $7K in brand drug costs.
How many General Practice Physician providers are there in the US?
There are 16,677 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,872 Medicare Part D claims per year.
What drugs does COLEEN KORZEN prescribe most often?
Based on 2023 Medicare Part D data, COLEEN KORZEN's most frequently prescribed drugs include Estradiol, Premarin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does COLEEN KORZEN accept Medicare?
COLEEN KORZEN appears in CMS Medicare data with 96 Part D claims and 52 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify COLEEN KORZEN's credentials?
COLEEN KORZEN's NPI is 1326464934. 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