2026 NPPES data Gastroenterology Physician NPI 1881750834 M.D.
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MICHAEL FIDANZATO, M.D.

Gastroenterology Physician in PRINCETON, New Jersey. 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
747
Medicare Part D claims · 171 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: MICHAEL FIDANZATO, M.D. is a Gastroenterology Physician ([object Object]) practicing in PRINCETON, New Jersey with a Medicare Part D prescribing footprint of 747 claims across 171 beneficiaries — 15% brand-name prescribing .

What stands out: MICHAEL FIDANZATO, M.D. filed 747 Medicare Part D claims in 2023 across PRINCETON, New Jersey. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

MICHAEL FIDANZATO, M.D. 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).

MICHAEL FIDANZATO, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 12/27/2006

NPI 1881750834

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

747 10% vs specialty avg

2023 prescription claims

Specialty avg: 833

Specialty distribution in New Jersey

How Gastroenterology Physician compares to other specialties among New Jersey providers

New Jersey providers

Gastroenterology Physician share within New Jersey

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

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).

MICHAEL FIDANZATO, M.D. is a Gastroenterology Physician provider practicing in PRINCETON, New Jersey, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1881750834. 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.

MICHAEL FIDANZATO, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 601 EWING ST, PRINCETON, NJ, 08540, with a listed phone of (609) 921-7620. NPI 1881750834 was issued on 12/27/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FIDANZATO 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 747 prescription claims written by this provider, covering 171 Medicare beneficiaries and totaling roughly $155K in drug spend, split 15% brand-name and 85% 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

601 EWING ST
PRINCETON, NJ 08540

Provider Details

NPI 1881750834
Specialty Gastroenterology Physician
Credentials M.D.
Gender Male
NPI Issued 12/27/2006

Brand vs generic prescribing mix · Typical

MICHAEL FIDANZATO, M.D. — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 747 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.

747
Total Claims
$155K
Total Drug Cost
171
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,581
Total Day Supply
45,653
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$125K
Generic Drug Cost
$30K
Antibiotic Claims
21

Patient Demographics

Average Patient Age
75.2 years
Avg HCC Risk Score
0.90
Gender Split
47% female / 53% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Pantoprazole Sodium
120
Famotidine
117
Omeprazole
68
Esomeprazole Magnesium
35
Plenvu
Peg3350/Sod Sul/Nacl/Kcl/Asb/C
23
Linzess
Linaclotide
21
Mesalamine Dr
Mesalamine
21
Creon
Lipase/Protease/Amylase
17
Cholestyramine
Cholestyramine (With Sugar)
14
Amlodipine Besylate-Benazepril
Amlodipine Besylate/Benazepril
13

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

Gastroenterology Physician Overview

How MICHAEL FIDANZATO, M.D. fits within the Gastroenterology Physician landscape nationally.

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

MICHAEL FIDANZATO, M.D.'s 747 claims are below the specialty average of 833.

Nearby Gastroenterology Physician Providers in New Jersey

Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as FIDANZATO.

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

Frequently Asked Questions

What is MICHAEL FIDANZATO, M.D.'s specialty?
MICHAEL FIDANZATO, M.D. specializes in Gastroenterology Physician and practices in PRINCETON, New Jersey. Credentials: M.D..
How much does MICHAEL FIDANZATO, M.D. prescribe under Medicare Part D?
In 2023, MICHAEL FIDANZATO, M.D. wrote 747 Medicare Part D claims totaling $155K in drug costs for 171 beneficiaries.
Where is MICHAEL FIDANZATO, M.D. located?
MICHAEL FIDANZATO, M.D. is located at 601 EWING ST, PRINCETON, NJ, 08540. Phone: (609) 921-7620.
What is MICHAEL FIDANZATO, M.D.'s NPI number?
MICHAEL FIDANZATO, M.D.'s National Provider Identifier (NPI) is 1881750834, issued on 12/27/2006.
Does MICHAEL FIDANZATO, M.D. prescribe more brand-name or generic drugs?
MICHAEL FIDANZATO, M.D.'s prescribing is 15% brand-name and 85% generic drugs by claim count, with $125K 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 MICHAEL FIDANZATO, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MICHAEL FIDANZATO, M.D.'s most frequently prescribed drugs include Pantoprazole Sodium, Famotidine, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHAEL FIDANZATO, M.D. accept Medicare?
MICHAEL FIDANZATO, M.D. appears in CMS Medicare data with 747 Part D claims and 171 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL FIDANZATO, M.D.'s credentials?
MICHAEL FIDANZATO, M.D.'s NPI is 1881750834 with credentials M.D.. 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