2026 NPPES data Gastroenterology Physician NPI 1427119429 M.D.
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REX ANTINOZZI, M.D.

Gastroenterology Physician in TRAVERSE CITY, Michigan. 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
880
Medicare Part D claims · 438 beneficiaries · Gastroenterology Physician avg: 833

What the federal data shows

REX ANTINOZZI, M.D. filed 880 Medicare Part D claims in 2023 as a Gastroenterology Physician in TRAVERSE CITY, Michigan.

880
Part D claims, 2023

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.

REX ANTINOZZI, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

880 Top 27% higher than 73% 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%). This entry sits in this band. 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

Board-eligible specialty (heuristic — not verified)

REX ANTINOZZI, 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).

What does the federal data show about REX ANTINOZZI, M.D.?

Quality data not reported

NPI registry status

Active

Issued 12/13/2006

NPI 1427119429

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

880 6% vs specialty avg

2023 prescription claims

Specialty avg: 833

Specialty distribution in Michigan

How Gastroenterology Physician compares to other specialties among Michigan providers

Michigan providers

Gastroenterology Physician share within Michigan

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

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).

REX ANTINOZZI, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 4100 PARK FOREST DR, TRAVERSE CITY, MI, 49684, with a listed phone of (231) 935-5710. NPI 1427119429 was issued on 12/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ANTINOZZI 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 880 prescription claims written by this provider, covering 438 Medicare beneficiaries and totaling roughly $701K 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.

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

4100 PARK FOREST DR
TRAVERSE CITY, MI 49684

Provider Details

NPI 1427119429
Specialty Gastroenterology Physician
Credentials M.D.
Gender Male
NPI Issued 12/13/2006

License & disciplinary context — Michigan MI-BOM 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 ~41K Michigan medical licensees in 2023 — they are NOT specific to REX ANTINOZZI, M.D.. To verify REX ANTINOZZI, M.D.'s current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM 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 Michigan 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.

880
Total Claims
$701K
Total Drug Cost
438
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,604
Total Day Supply
38,648
Generic Drug Cost
$105K
Antibiotic Claims
17

Patient Demographics

Average Patient Age
72.4 years
Avg HCC Risk Score
0.96
Gender Split
55% female / 45% male
Age Distribution
<65: 29, 65-74: 238, 75-84: 156, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

What REX ANTINOZZI, M.D. 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
Omeprazole
77
Peg 3350-Electrolyte
Sodium Chloride/Nahco3/Kcl/Peg
66
Pantoprazole Sodium
55
Mesalamine
49
Dicyclomine Hcl
39
Famotidine
24
Colestipol Hcl
20
Stelara
Ustekinumab
20
Lansoprazole
19
Mercaptopurine
19

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

Gastroenterology Physician Overview

How REX ANTINOZZI, 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

REX ANTINOZZI, M.D.'s 880 claims are above the specialty average of 833.

Nearby Gastroenterology Physician Providers in Michigan

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

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

Frequently Asked Questions

What is REX ANTINOZZI, M.D.'s specialty?
REX ANTINOZZI, M.D. specializes in Gastroenterology Physician and practices in TRAVERSE CITY, Michigan. Credentials: M.D..
How much does REX ANTINOZZI, M.D. prescribe under Medicare Part D?
In 2023, REX ANTINOZZI, M.D. wrote 880 Medicare Part D claims totaling $701K in drug costs for 438 beneficiaries.
Where is REX ANTINOZZI, M.D. located?
REX ANTINOZZI, M.D. is located at 4100 PARK FOREST DR, TRAVERSE CITY, MI, 49684. Phone: (231) 935-5710.
What is REX ANTINOZZI, M.D.'s NPI number?
REX ANTINOZZI, M.D.'s National Provider Identifier (NPI) is 1427119429, issued on 12/13/2006.
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 REX ANTINOZZI, M.D. prescribe most often?
Based on 2023 Medicare Part D data, REX ANTINOZZI, M.D.'s most frequently prescribed drugs include Omeprazole, Peg 3350-Electrolyte, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does REX ANTINOZZI, M.D. accept Medicare?
REX ANTINOZZI, M.D. appears in CMS Medicare data with 880 Part D claims and 438 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify REX ANTINOZZI, M.D.'s credentials?
REX ANTINOZZI, M.D.'s NPI is 1427119429 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