2026 NPPES data Single Specialty Group NPI 1942675913 APRN, DNP-C
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MARGARET GATHMAN, APRN, DNP-C

Single Specialty Group in BROOKSVILLE, Florida. 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
4K
Medicare Part D claims · 262 beneficiaries · Single Specialty Group avg: 7K
Generic prescribing
90%
generic claims · 10% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$33.78
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MARGARET GATHMAN, APRN, DNP-C filed 4,052 Medicare Part D claims in 2023 as a Single Specialty Group in BROOKSVILLE, Florida, prescribing 90% generic.

4K
Part D claims, 2023
90%
generic prescribing
$33.78
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.

MARGARET GATHMAN, APRN, DNP-C's Medicare Part D volume vs every U.S. prescriber

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

4,052 Top 8% higher than 92% 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 MARGARET GATHMAN, APRN, DNP-C?

Quality data not reported

NPI registry status

Active

Issued 12/02/2015

NPI 1942675913

Primary specialty

Single Specialty Group

Rare

24 US NPIs in this specialty

Medicare Part D claims

4,052 44% vs specialty avg

2023 prescription claims

Specialty avg: 7,180

Specialty distribution in Florida

How Single Specialty Group compares to other specialties among Florida providers

Florida providers

Single Specialty Group share within Florida

1. Single Specialty Group42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Single Specialty Group share within Florida

Specialty board-certification context

Estimated specialty board-certified rate — Single Specialty Group (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Single Specialty Group ABMS/AOA estimate

Est. board-certified rate (Single Specialty Group) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Single Specialty Group) — 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).

MARGARET GATHMAN, APRN, DNP-C is a Single Specialty Group provider practicing in BROOKSVILLE, Florida, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: APRN, DNP-C. NPI: 1942675913. 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.

MARGARET GATHMAN, APRN, DNP-C appears in the CMS NPPES registry as a Single Specialty Group provider holding APRN, DNP-C credentials at 932 CANDLELIGHT BLVD, BROOKSVILLE, FL, 34601, with a listed phone of (352) 345-8185. NPI 1942675913 was issued on 12/02/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GATHMAN 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 4,052 prescription claims written by this provider, covering 262 Medicare beneficiaries and totaling roughly $272K in drug spend, split 10% brand-name and 90% generic by claim count, with an opioid prescribing rate of 1.7%. 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.

Single Specialty Group is a narrow specialty nationwide, with 24 enrolled providers across 16 states and an average of 7,180 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

932 CANDLELIGHT BLVD
BROOKSVILLE, FL 34601

Provider Details

NPI 1942675913
Specialty Single Specialty Group
Credentials APRN, DNP-C
Gender Female
NPI Issued 12/02/2015

Hospital and facility affiliations

Facilities where MARGARET GATHMAN, APRN, DNP-C 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.

MILLENNIUM PHYSICIAN GROUP LLC
PORT CHARLOTTE, FL
VERIMED HEALTH GROUP BROOKSVILLE LLC
BROOKSVILLE, FL

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 MARGARET GATHMAN, APRN, DNP-C. Source: openpaymentsdata.cms.gov.

Total received

$34

Largest payer

Novo Nordisk 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 — Florida FLDOH 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 ~75K Florida medical licensees in 2023 — they are NOT specific to MARGARET GATHMAN, APRN, DNP-C. To verify MARGARET GATHMAN, APRN, DNP-C's current license status, search the FLDOH public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

480
Total board actions, Florida 2023
Across 467 cases
6.40
Actions per 1,000 licensees
Florida statewide rate
monetary fine
Most common action type
138 cases

FLDOH 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 Florida disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

MARGARET GATHMAN, APRN, DNP-C — brand share 10.0%
Specialty average (est.)

10% brand-name claims vs 90% generic, on 4,052 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.

4,052
Total Claims
$272K
Total Drug Cost
262
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,724
Total Day Supply
255,248
Brand vs Generic
10% brand / 90% generic
Brand Drug Cost
$209K
Generic Drug Cost
$63K
Opioid Claims
69 (1.7% rate)
Antibiotic Claims
113

Patient Demographics

Average Patient Age
71.5 years
Avg HCC Risk Score
1.27
Gender Split
62% female / 38% male
Age Distribution
<65: 35, 65-74: 133, 75-84: 76, 85+: 18

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
219
Atorvastatin Calcium
217
Lisinopril
144
Amlodipine Besylate
141
Losartan Potassium
132
Albuterol Sulfate Hfa
Albuterol Sulfate
90
Gabapentin
87
Meloxicam
84
Metformin Hcl
84
Metoprolol Tartrate
77

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

Single Specialty Group Overview

How MARGARET GATHMAN, APRN, DNP-C fits within the Single Specialty Group landscape nationally.

24
Single Specialty Group Providers in US
16
States with Single Specialty Group
7,180
Avg Claims per Provider

MARGARET GATHMAN, APRN, DNP-C's 4,052 claims are below the specialty average of 7,180.

Nearby Single Specialty Group Providers in Florida

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

Compare Single Specialty Group nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARGARET GATHMAN, APRN, DNP-C's specialty?
MARGARET GATHMAN, APRN, DNP-C specializes in Single Specialty Group and practices in BROOKSVILLE, Florida. Credentials: APRN, DNP-C.
How much does MARGARET GATHMAN, APRN, DNP-C prescribe under Medicare Part D?
In 2023, MARGARET GATHMAN, APRN, DNP-C wrote 4,052 Medicare Part D claims totaling $272K in drug costs for 262 beneficiaries.
Where is MARGARET GATHMAN, APRN, DNP-C located?
MARGARET GATHMAN, APRN, DNP-C is located at 932 CANDLELIGHT BLVD, BROOKSVILLE, FL, 34601. Phone: (352) 345-8185.
What is MARGARET GATHMAN, APRN, DNP-C's NPI number?
MARGARET GATHMAN, APRN, DNP-C's National Provider Identifier (NPI) is 1942675913, issued on 12/02/2015.
Does MARGARET GATHMAN, APRN, DNP-C prescribe more brand-name or generic drugs?
MARGARET GATHMAN, APRN, DNP-C's prescribing is 10% brand-name and 90% generic drugs by claim count, with $209K in brand drug costs.
Does MARGARET GATHMAN, APRN, DNP-C prescribe opioids?
Yes, MARGARET GATHMAN, APRN, DNP-C had 69 opioid claims in 2023 with an opioid prescribing rate of 1.7%.
How many Single Specialty Group providers are there in the US?
There are 24 Single Specialty Group providers across 16 states in the US. The average Single Specialty Group provider writes 7,180 Medicare Part D claims per year.
What drugs does MARGARET GATHMAN, APRN, DNP-C prescribe most often?
Based on 2023 Medicare Part D data, MARGARET GATHMAN, APRN, DNP-C's most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARGARET GATHMAN, APRN, DNP-C accept Medicare?
MARGARET GATHMAN, APRN, DNP-C appears in CMS Medicare data with 4,052 Part D claims and 262 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARGARET GATHMAN, APRN, DNP-C's credentials?
MARGARET GATHMAN, APRN, DNP-C's NPI is 1942675913 with credentials APRN, DNP-C. 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