2026 NPPES data Adult Health Nurse Practitioner NPI 1326273442 NP
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GUIRLENE JEAN-SIMON, NP

Adult Health Nurse Practitioner in BOSTON, Massachusetts. 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 · 120 beneficiaries · Adult Health Nurse Practitioner avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

GUIRLENE JEAN-SIMON, NP filed 3,061 Medicare Part D claims in 2023 as a Adult Health Nurse Practitioner in BOSTON, Massachusetts, prescribing 87% generic.

3K
Part D claims, 2023
87%
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.

GUIRLENE JEAN-SIMON, NP's Medicare Part D volume vs every U.S. prescriber

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

3,061 Top 11% higher than 89% 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 GUIRLENE JEAN-SIMON, NP?

Quality data not reported

NPI registry status

Active

Issued 05/19/2009

NPI 1326273442

Primary specialty

Adult Health Nurse Practitioner

Mid-sized

29,492 US NPIs in this specialty

Medicare Part D claims

3,061 155% vs specialty avg

2023 prescription claims

Specialty avg: 1,201

Specialty distribution in Massachusetts

How Adult Health Nurse Practitioner compares to other specialties among Massachusetts providers

Massachusetts providers

Adult Health Nurse Practitioner share within Massachusetts

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Adult Health 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).

GUIRLENE JEAN-SIMON, NP appears in the CMS NPPES registry as a Adult Health Nurse Practitioner provider holding NP credentials at 1575 BLUE HILL AVE, BOSTON, MA, 02126, with a listed phone of (617) 898-9042. NPI 1326273442 was issued on 05/19/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what JEAN-SIMON 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 3,061 prescription claims written by this provider, covering 120 Medicare beneficiaries and totaling roughly $287K in drug spend, split 13% brand-name and 87% 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.

Adult Health Nurse Practitioner is a mid-sized specialty nationwide, with 29,492 enrolled providers across 55 states and an average of 1,201 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

1575 BLUE HILL AVE
BOSTON, MA 02126

Provider Details

NPI 1326273442
Specialty Adult Health Nurse Practitioner
Credentials NP
Gender Female
NPI Issued 05/19/2009

Hospital and facility affiliations

Facilities where GUIRLENE JEAN-SIMON, NP 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.

MATTAPAN COMMUNITY HEALTH CENTER, INC.
BOSTON, MA

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 — Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 — they are NOT specific to GUIRLENE JEAN-SIMON, NP. To verify GUIRLENE JEAN-SIMON, NP's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

GUIRLENE JEAN-SIMON, NP — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 3,061 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.

3,061
Total Claims
$287K
Total Drug Cost
120
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,457
Total Day Supply
160,188
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$235K
Generic Drug Cost
$49K
Antibiotic Claims
20

Patient Demographics

Average Patient Age
74.3 years
Avg HCC Risk Score
0.95
Gender Split
77% female / 23% male
Age Distribution
<65: 11, 65-74: 44, 75-84: 43, 85+: 22

Top Prescribed Drugs (Medicare Part D)

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

What GUIRLENE JEAN-SIMON, NP 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
297
Diclofenac Sodium
235
Hydralazine Hcl
163
Amlodipine Besylate
160
Losartan Potassium
156
Lisinopril
130
Omeprazole
117
Hydrochlorothiazide
93
Glipizide
78
Metformin Hcl
73

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

Adult Health Nurse Practitioner Overview

How GUIRLENE JEAN-SIMON, NP fits within the Adult Health Nurse Practitioner landscape nationally.

29,492
Adult Health Nurse Practitioner Providers in US
55
States with Adult Health Nurse Practitioner
1,201
Avg Claims per Provider

GUIRLENE JEAN-SIMON, NP's 3,061 claims are above the specialty average of 1,201.

Nearby Adult Health Nurse Practitioner Providers in Massachusetts

Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as JEAN-SIMON.

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

Frequently Asked Questions

What is GUIRLENE JEAN-SIMON, NP's specialty?
GUIRLENE JEAN-SIMON, NP specializes in Adult Health Nurse Practitioner and practices in BOSTON, Massachusetts. Credentials: NP.
How much does GUIRLENE JEAN-SIMON, NP prescribe under Medicare Part D?
In 2023, GUIRLENE JEAN-SIMON, NP wrote 3,061 Medicare Part D claims totaling $287K in drug costs for 120 beneficiaries.
Where is GUIRLENE JEAN-SIMON, NP located?
GUIRLENE JEAN-SIMON, NP is located at 1575 BLUE HILL AVE, BOSTON, MA, 02126. Phone: (617) 898-9042.
What is GUIRLENE JEAN-SIMON, NP's NPI number?
GUIRLENE JEAN-SIMON, NP's National Provider Identifier (NPI) is 1326273442, issued on 05/19/2009.
Does GUIRLENE JEAN-SIMON, NP prescribe more brand-name or generic drugs?
GUIRLENE JEAN-SIMON, NP's prescribing is 13% brand-name and 87% generic drugs by claim count, with $235K in brand drug costs.
How many Adult Health Nurse Practitioner providers are there in the US?
There are 29,492 Adult Health Nurse Practitioner providers across 55 states in the US. The average Adult Health Nurse Practitioner provider writes 1,201 Medicare Part D claims per year.
What drugs does GUIRLENE JEAN-SIMON, NP prescribe most often?
Based on 2023 Medicare Part D data, GUIRLENE JEAN-SIMON, NP's most frequently prescribed drugs include Atorvastatin Calcium, Diclofenac Sodium, Hydralazine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GUIRLENE JEAN-SIMON, NP accept Medicare?
GUIRLENE JEAN-SIMON, NP appears in CMS Medicare data with 3,061 Part D claims and 120 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GUIRLENE JEAN-SIMON, NP's credentials?
GUIRLENE JEAN-SIMON, NP's NPI is 1326273442 with credentials NP. 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