2026 NPPES data Gastroenterology Physician NPI 1770539850 MD
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THOMAS ROSENFIELD, MD

Gastroenterology Physician in ATLANTIS, 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
3K
Medicare Part D claims · 801 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$864.47
38 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

THOMAS ROSENFIELD, MD filed 2,584 Medicare Part D claims in 2023 as a Gastroenterology Physician in ATLANTIS, Florida, prescribing 87% generic.

3K
Part D claims, 2023
87%
generic prescribing
$864.47
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.

THOMAS ROSENFIELD, MD's Medicare Part D volume vs every U.S. prescriber

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

2,584 Top 13% higher than 87% 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

Board-eligible specialty (heuristic — not verified)

THOMAS ROSENFIELD, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about THOMAS ROSENFIELD, MD?

Quality data not reported

NPI registry status

Active

Issued 05/26/2006

NPI 1770539850

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

2,584 210% vs specialty avg

2023 prescription claims

Specialty avg: 833

Specialty distribution in Florida

How Gastroenterology Physician compares to other specialties among Florida providers

Florida providers

Gastroenterology Physician share within Florida

1. Gastroenterology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Gastroenterology Physician share within Florida

Specialty board-certification context

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

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

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

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

THOMAS ROSENFIELD, MD appears in the CMS NPPES registry as a Gastroenterology Physician provider holding MD credentials at 5401 S CONGRESS AVE, ATLANTIS, FL, 33462, with a listed phone of (561) 964-8221. NPI 1770539850 was issued on 05/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ROSENFIELD 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 2,584 prescription claims written by this provider, covering 801 Medicare beneficiaries and totaling roughly $903K 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.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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

5401 S CONGRESS AVE
ATLANTIS, FL 33462

Provider Details

NPI 1770539850
Specialty Gastroenterology Physician
Credentials MD
Gender Male
NPI Issued 05/26/2006

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 THOMAS ROSENFIELD, MD. Source: openpaymentsdata.cms.gov.

Total received

$864

Largest payer

ABBVIE 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 THOMAS ROSENFIELD, MD. To verify THOMAS ROSENFIELD, MD'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

THOMAS ROSENFIELD, MD — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 2,584 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.

2,584
Total Claims
$903K
Total Drug Cost
801
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,021
Total Day Supply
137,878
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$781K
Generic Drug Cost
$122K
Antibiotic Claims
114

Patient Demographics

Average Patient Age
75.4 years
Avg HCC Risk Score
1.52
Gender Split
60% female / 40% male
Age Distribution
<65: 36, 65-74: 316, 75-84: 366, 85+: 83

Top Prescribed Drugs (Medicare Part D)

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

What THOMAS ROSENFIELD, MD 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
Famotidine
919
Omeprazole
286
Pantoprazole Sodium
208
Mesalamine
65
Linzess
Linaclotide
64
Esomeprazole Magnesium
53
Metronidazole
46
Creon
Lipase/Protease/Amylase
42
Dicyclomine Hcl
39
Ursodiol
36

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

Gastroenterology Physician Overview

How THOMAS ROSENFIELD, MD fits within the Gastroenterology Physician landscape nationally.

16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider

THOMAS ROSENFIELD, MD's 2,584 claims are above the specialty average of 833.

Nearby Gastroenterology Physician Providers in Florida

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

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

Frequently Asked Questions

What is THOMAS ROSENFIELD, MD's specialty?
THOMAS ROSENFIELD, MD specializes in Gastroenterology Physician and practices in ATLANTIS, Florida. Credentials: MD.
How much does THOMAS ROSENFIELD, MD prescribe under Medicare Part D?
In 2023, THOMAS ROSENFIELD, MD wrote 2,584 Medicare Part D claims totaling $903K in drug costs for 801 beneficiaries.
Where is THOMAS ROSENFIELD, MD located?
THOMAS ROSENFIELD, MD is located at 5401 S CONGRESS AVE, ATLANTIS, FL, 33462. Phone: (561) 964-8221.
What is THOMAS ROSENFIELD, MD's NPI number?
THOMAS ROSENFIELD, MD's National Provider Identifier (NPI) is 1770539850, issued on 05/26/2006.
Does THOMAS ROSENFIELD, MD prescribe more brand-name or generic drugs?
THOMAS ROSENFIELD, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $781K in brand drug costs.
How many Gastroenterology Physician providers are there in the US?
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does THOMAS ROSENFIELD, MD prescribe most often?
Based on 2023 Medicare Part D data, THOMAS ROSENFIELD, MD's most frequently prescribed drugs include Famotidine, Omeprazole, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THOMAS ROSENFIELD, MD accept Medicare?
THOMAS ROSENFIELD, MD appears in CMS Medicare data with 2,584 Part D claims and 801 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS ROSENFIELD, MD's credentials?
THOMAS ROSENFIELD, MD's NPI is 1770539850 with credentials MD. 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