2026 NPPES data Gerontology Nurse Practitioner NPI 1598377020 NURSE PRACTITIONER
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DENNIS DUMA, NURSE PRACTITIONER

Gerontology Nurse Practitioner in OCALA, 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
1K
Medicare Part D claims · 305 beneficiaries · Gerontology Nurse Practitioner avg: 1K
Industry payments
$686.5
74 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DENNIS DUMA, NURSE PRACTITIONER filed 1,132 Medicare Part D claims in 2023 as a Gerontology Nurse Practitioner in OCALA, Florida.

1K
Part D claims, 2023
$686.5
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.

DENNIS DUMA, NURSE PRACTITIONER's Medicare Part D volume vs every U.S. prescriber

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

1,132 Top 23% higher than 77% 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%). This entry sits in this band. 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 DENNIS DUMA, NURSE PRACTITIONER?

Quality data not reported

NPI registry status

Active

Issued 08/17/2020

NPI 1598377020

Primary specialty

Gerontology Nurse Practitioner

Mid-sized

9,625 US NPIs in this specialty

Medicare Part D claims

1,132 12% vs specialty avg

2023 prescription claims

Specialty avg: 1,283

Specialty distribution in Florida

How Gerontology Nurse Practitioner compares to other specialties among Florida providers

Florida providers

Gerontology Nurse Practitioner share within Florida

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

Specialty board-certification context

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

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

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

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

DENNIS DUMA, NURSE PRACTITIONER is a Gerontology Nurse Practitioner provider practicing in OCALA, Florida, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: NURSE PRACTITIONER. NPI: 1598377020. 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.

DENNIS DUMA, NURSE PRACTITIONER appears in the CMS NPPES registry as a Gerontology Nurse Practitioner provider holding NURSE PRACTITIONER credentials at 4534 SW 63RD ST, OCALA, FL, 34474, with a listed phone of (352) 804-8426. NPI 1598377020 was issued on 08/17/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DUMA 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 1,132 prescription claims written by this provider, covering 305 Medicare beneficiaries and totaling roughly $184K in drug spend. 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.

Gerontology Nurse Practitioner is a mid-sized specialty nationwide, with 9,625 enrolled providers across 54 states and an average of 1,283 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

4534 SW 63RD ST
OCALA, FL 34474

Provider Details

NPI 1598377020
Specialty Gerontology Nurse Practitioner
Credentials NURSE PRACTITIONER
Gender Male
NPI Issued 08/17/2020

Hospital and facility affiliations

Facilities where DENNIS DUMA, NURSE PRACTITIONER 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.

HOSPITALISTS GROUP OF FLORIDA PLLC
OCALA, 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 DENNIS DUMA, NURSE PRACTITIONER. Source: openpaymentsdata.cms.gov.

Total received

$687

Largest payer

Phathom Pharmaceuticals, 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 DENNIS DUMA, NURSE PRACTITIONER. To verify DENNIS DUMA, NURSE PRACTITIONER'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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,132
Total Claims
$184K
Total Drug Cost
305
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,851
Total Day Supply
52,379
Generic Drug Cost
$42K
Antibiotic Claims
84

Patient Demographics

Average Patient Age
68.1 years
Avg HCC Risk Score
1.96
Gender Split
61% female / 39% male
Age Distribution
<65: 84, 65-74: 147, 75-84: 63, 85+: 11

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Famotidine
316
Pantoprazole Sodium
230
Sucralfate
112
Omeprazole
102
Dicyclomine Hcl
41
Linzess
Linaclotide
36
Creon
Lipase/Protease/Amylase
21
Esomeprazole Magnesium
20
Amoxicillin
16
Azithromycin
15

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

Gerontology Nurse Practitioner Overview

How DENNIS DUMA, NURSE PRACTITIONER fits within the Gerontology Nurse Practitioner landscape nationally.

9,625
Gerontology Nurse Practitioner Providers in US
54
States with Gerontology Nurse Practitioner
1,283
Avg Claims per Provider

DENNIS DUMA, NURSE PRACTITIONER's 1,132 claims are below the specialty average of 1,283.

Nearby Gerontology Nurse Practitioner Providers in Florida

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

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

Frequently Asked Questions

What is DENNIS DUMA, NURSE PRACTITIONER's specialty?
DENNIS DUMA, NURSE PRACTITIONER specializes in Gerontology Nurse Practitioner and practices in OCALA, Florida. Credentials: NURSE PRACTITIONER.
How much does DENNIS DUMA, NURSE PRACTITIONER prescribe under Medicare Part D?
In 2023, DENNIS DUMA, NURSE PRACTITIONER wrote 1,132 Medicare Part D claims totaling $184K in drug costs for 305 beneficiaries.
Where is DENNIS DUMA, NURSE PRACTITIONER located?
DENNIS DUMA, NURSE PRACTITIONER is located at 4534 SW 63RD ST, OCALA, FL, 34474. Phone: (352) 804-8426.
What is DENNIS DUMA, NURSE PRACTITIONER's NPI number?
DENNIS DUMA, NURSE PRACTITIONER's National Provider Identifier (NPI) is 1598377020, issued on 08/17/2020.
How many Gerontology Nurse Practitioner providers are there in the US?
There are 9,625 Gerontology Nurse Practitioner providers across 54 states in the US. The average Gerontology Nurse Practitioner provider writes 1,283 Medicare Part D claims per year.
What drugs does DENNIS DUMA, NURSE PRACTITIONER prescribe most often?
Based on 2023 Medicare Part D data, DENNIS DUMA, NURSE PRACTITIONER's most frequently prescribed drugs include Famotidine, Pantoprazole Sodium, Sucralfate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DENNIS DUMA, NURSE PRACTITIONER accept Medicare?
DENNIS DUMA, NURSE PRACTITIONER appears in CMS Medicare data with 1,132 Part D claims and 305 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DENNIS DUMA, NURSE PRACTITIONER's credentials?
DENNIS DUMA, NURSE PRACTITIONER's NPI is 1598377020 with credentials NURSE PRACTITIONER. 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