2026 NPPES data Physician Assistant NPI 1598342610 PA
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MASON FISH, PA

Physician Assistant in CLEARWATER, 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
427
Medicare Part D claims · 127 beneficiaries · Physician Assistant avg: 790
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$3.3K
177 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MASON FISH, PA filed 427 Medicare Part D claims in 2023 as a Physician Assistant in CLEARWATER, Florida, prescribing 94% generic.

427
Part D claims, 2023
94%
generic prescribing
$3.3K
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.

MASON FISH, PA's Medicare Part D volume vs every U.S. prescriber

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

427 Top 38% higher than 62% 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%). This entry sits in this band. 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

What does the federal data show about MASON FISH, PA?

Quality data not reported

NPI registry status

Active

Issued 03/25/2021

NPI 1598342610

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

427 46% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Florida

How Physician Assistant compares to other specialties among Florida providers

Florida providers

Physician Assistant share within Florida

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within Florida

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Physician Assistant) — 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).

MASON FISH, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 2454 N MCMULLEN BOOTH RD STE 501-504, CLEARWATER, FL, 33759, with a listed phone of (727) 285-8770. NPI 1598342610 was issued on 03/25/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FISH 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 427 prescription claims written by this provider, covering 127 Medicare beneficiaries and totaling roughly $96K in drug spend, split 6% brand-name and 94% 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.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

2454 N MCMULLEN BOOTH RD STE 501-504
CLEARWATER, FL 33759

Provider Details

NPI 1598342610
Specialty Physician Assistant
Credentials PA
Gender Male
NPI Issued 03/25/2021

Hospital and facility affiliations

Facilities where MASON FISH, PA 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.

MICHELLE R SCARGLE MD PA
CLEARWATER, 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 MASON FISH, PA. Source: openpaymentsdata.cms.gov.

Total received

$3.3K

Largest payer

Axsome Therapeutics, 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 MASON FISH, PA. To verify MASON FISH, PA'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 · Generic-heavy

MASON FISH, PA — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 427 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.

427
Total Claims
$96K
Total Drug Cost
127
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
743
Total Day Supply
22,159
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$82K
Generic Drug Cost
$14K

Patient Demographics

Average Patient Age
65.6 years
Avg HCC Risk Score
1.57
Gender Split
71% female / 29% male
Age Distribution
<65: 40, 65-74: 65, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What MASON FISH, PA 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
Alprazolam
48
Clonazepam
40
Lorazepam
23
Duloxetine Hcl
21
Trazodone Hcl
17
Sertraline Hcl
15
Venlafaxine Hcl Er
Venlafaxine Hcl
15
Lamotrigine
14
Olanzapine
14
Escitalopram Oxalate
13

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

Physician Assistant Overview

How MASON FISH, PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

MASON FISH, PA's 427 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Florida

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

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is MASON FISH, PA's specialty?
MASON FISH, PA specializes in Physician Assistant and practices in CLEARWATER, Florida. Credentials: PA.
How much does MASON FISH, PA prescribe under Medicare Part D?
In 2023, MASON FISH, PA wrote 427 Medicare Part D claims totaling $96K in drug costs for 127 beneficiaries.
Where is MASON FISH, PA located?
MASON FISH, PA is located at 2454 N MCMULLEN BOOTH RD STE 501-504, CLEARWATER, FL, 33759. Phone: (727) 285-8770.
What is MASON FISH, PA's NPI number?
MASON FISH, PA's National Provider Identifier (NPI) is 1598342610, issued on 03/25/2021.
Does MASON FISH, PA prescribe more brand-name or generic drugs?
MASON FISH, PA's prescribing is 6% brand-name and 94% generic drugs by claim count, with $82K in brand drug costs.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does MASON FISH, PA prescribe most often?
Based on 2023 Medicare Part D data, MASON FISH, PA's most frequently prescribed drugs include Alprazolam, Clonazepam, Lorazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MASON FISH, PA accept Medicare?
MASON FISH, PA appears in CMS Medicare data with 427 Part D claims and 127 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MASON FISH, PA's credentials?
MASON FISH, PA's NPI is 1598342610 with credentials PA. 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