2026 NPPES data Nurse Practitioner NPI 1770087595
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CHELSEA LARSON

Nurse Practitioner in PAOLI, 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
715
Medicare Part D claims · 247 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

CHELSEA LARSON filed 715 Medicare Part D claims in 2023 as a Nurse Practitioner in PAOLI, Pennsylvania, prescribing 93% generic.

715
Part D claims, 2023
93%
generic prescribing

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.

CHELSEA LARSON's Medicare Part D volume vs every U.S. prescriber

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

715 Top 29% higher than 71% 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%). This entry sits in this band. 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

What does the federal data show about CHELSEA LARSON?

Quality data not reported

NPI registry status

Active

Issued 03/19/2018

NPI 1770087595

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

715 34% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in Pennsylvania

How Nurse Practitioner compares to other specialties among Pennsylvania providers

Pennsylvania providers

Nurse Practitioner share within Pennsylvania

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

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).

CHELSEA LARSON appears in the CMS NPPES registry as a Nurse Practitioner provider at 250 W LANCASTER AVE STE 120, PAOLI, PA, 19301, with a listed phone of (610) 644-8069. NPI 1770087595 was issued on 03/19/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LARSON 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 715 prescription claims written by this provider, covering 247 Medicare beneficiaries and totaling roughly $31K in drug spend, split 7% brand-name and 93% 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.

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

250 W LANCASTER AVE STE 120
PAOLI, PA 19301

Provider Details

NPI 1770087595
Specialty Nurse Practitioner
Gender Female
NPI Issued 03/19/2018

Hospital and facility affiliations

Facilities where CHELSEA LARSON 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.

PAOLI FAMILY MEDICINE
PAOLI, 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).

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 CHELSEA LARSON. To verify CHELSEA LARSON'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 · Generic-heavy

CHELSEA LARSON — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 715 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.

715
Total Claims
$31K
Total Drug Cost
247
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,529
Total Day Supply
42,195
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$19K
Generic Drug Cost
$13K
Antibiotic Claims
100

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
1.05
Gender Split
64% female / 36% male

Top Prescribed Drugs (Medicare Part D)

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

What CHELSEA LARSON 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
Atorvastatin Calcium
53
Levothyroxine Sodium
42
Lisinopril
27
Rosuvastatin Calcium
27
Escitalopram Oxalate
26
Metformin Hcl
22
Doxycycline Hyclate
21
Losartan Potassium
20
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
18
Lorazepam
17

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

Nurse Practitioner Overview

How CHELSEA LARSON 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

CHELSEA LARSON's 715 claims are below the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Pennsylvania

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

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

Frequently Asked Questions

What is CHELSEA LARSON's specialty?
CHELSEA LARSON specializes in Nurse Practitioner and practices in PAOLI, Pennsylvania.
How much does CHELSEA LARSON prescribe under Medicare Part D?
In 2023, CHELSEA LARSON wrote 715 Medicare Part D claims totaling $31K in drug costs for 247 beneficiaries.
Where is CHELSEA LARSON located?
CHELSEA LARSON is located at 250 W LANCASTER AVE STE 120, PAOLI, PA, 19301. Phone: (610) 644-8069.
What is CHELSEA LARSON's NPI number?
CHELSEA LARSON's National Provider Identifier (NPI) is 1770087595, issued on 03/19/2018.
Does CHELSEA LARSON prescribe more brand-name or generic drugs?
CHELSEA LARSON's prescribing is 7% brand-name and 93% generic drugs by claim count, with $19K 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 CHELSEA LARSON prescribe most often?
Based on 2023 Medicare Part D data, CHELSEA LARSON's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHELSEA LARSON accept Medicare?
CHELSEA LARSON appears in CMS Medicare data with 715 Part D claims and 247 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHELSEA LARSON's credentials?
CHELSEA LARSON's NPI is 1770087595. 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