2026 NPPES data Colon & Rectal Surgery Physician NPI 1578919817 M.D.
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ALEXANDER CASELLA, M.D.

Colon & Rectal Surgery Physician in GREEN BAY, Wisconsin. 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
53
Medicare Part D claims · 23 beneficiaries · Colon & Rectal Surgery Physician avg: 196
Industry payments
$133.39
5 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ALEXANDER CASELLA, M.D. is a Colon & Rectal Surgery Physician ([object Object]) practicing in GREEN BAY, Wisconsin with a Medicare Part D prescribing footprint of 53 claims across 23 beneficiaries . Industry payments of $133.39 across 5 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ALEXANDER CASELLA, M.D. filed 53 Medicare Part D claims in 2023 across GREEN BAY, Wisconsin. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ALEXANDER CASELLA, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

ALEXANDER CASELLA, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 05/05/2016

NPI 1578919817

Primary specialty

Colon & Rectal Surgery Physician

Niche

1,608 US NPIs in this specialty

Medicare Part D claims

53 73% vs specialty avg

2023 prescription claims

Specialty avg: 196

Specialty distribution in Wisconsin

How Colon & Rectal Surgery Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Colon & Rectal Surgery Physician share within Wisconsin

1. Colon & Rectal Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Colon & Rectal Surgery Physician share within Wisconsin

Specialty board-certification context

Estimated specialty board-certified rate — Colon & Rectal Surgery Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Colon & Rectal Surgery Physician ABMS/AOA estimate

Est. board-certified rate (Colon & Rectal Surgery Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Colon & Rectal Surgery 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).

ALEXANDER CASELLA, M.D. is a Colon & Rectal Surgery Physician provider practicing in GREEN BAY, Wisconsin, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1578919817. 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.

ALEXANDER CASELLA, M.D. appears in the CMS NPPES registry as a Colon & Rectal Surgery Physician provider holding M.D. credentials at 2845 GREENBRIER RD, GREEN BAY, WI, 54311, with a listed phone of (920) 288-8250. NPI 1578919817 was issued on 05/05/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CASELLA 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 53 prescription claims written by this provider, covering 23 Medicare beneficiaries and totaling roughly $980 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.

Colon & Rectal Surgery Physician is a narrow specialty nationwide, with 1,608 enrolled providers across 50 states and an average of 196 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

2845 GREENBRIER RD
GREEN BAY, WI 54311

Provider Details

NPI 1578919817
Specialty Colon & Rectal Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 05/05/2016

Hospital and facility affiliations

Facilities where ALEXANDER CASELLA, M.D. 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.

BAYCARE AURORA LLC
GREEN BAY, WI
SMH PHYSICIAN SERVICES INC
SARASOTA, 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 ALEXANDER CASELLA, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$133

Largest payer

INTUITIVE SURGICAL, 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.

Medicare Part D Prescribing Data

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

53
Total Claims
$980
Total Drug Cost
23
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
54
Total Day Supply
690
Generic Drug Cost
$855
Antibiotic Claims
15

Patient Demographics

Average Patient Age
70.9 years
Avg HCC Risk Score
2.31

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Gabapentin
12

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

Colon & Rectal Surgery Physician Overview

How ALEXANDER CASELLA, M.D. fits within the Colon & Rectal Surgery Physician landscape nationally.

1,608
Colon & Rectal Surgery Physician Providers in US
50
States with Colon & Rectal Surgery Physician
196
Avg Claims per Provider

ALEXANDER CASELLA, M.D.'s 53 claims are below the specialty average of 196.

Nearby Colon & Rectal Surgery Physician Providers in Wisconsin

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

Compare Colon & Rectal Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ALEXANDER CASELLA, M.D.'s specialty?
ALEXANDER CASELLA, M.D. specializes in Colon & Rectal Surgery Physician and practices in GREEN BAY, Wisconsin. Credentials: M.D..
How much does ALEXANDER CASELLA, M.D. prescribe under Medicare Part D?
In 2023, ALEXANDER CASELLA, M.D. wrote 53 Medicare Part D claims totaling $980 in drug costs for 23 beneficiaries.
Where is ALEXANDER CASELLA, M.D. located?
ALEXANDER CASELLA, M.D. is located at 2845 GREENBRIER RD, GREEN BAY, WI, 54311. Phone: (920) 288-8250.
What is ALEXANDER CASELLA, M.D.'s NPI number?
ALEXANDER CASELLA, M.D.'s National Provider Identifier (NPI) is 1578919817, issued on 05/05/2016.
How many Colon & Rectal Surgery Physician providers are there in the US?
There are 1,608 Colon & Rectal Surgery Physician providers across 50 states in the US. The average Colon & Rectal Surgery Physician provider writes 196 Medicare Part D claims per year.
What drugs does ALEXANDER CASELLA, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ALEXANDER CASELLA, M.D.'s most frequently prescribed drugs include Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALEXANDER CASELLA, M.D. accept Medicare?
ALEXANDER CASELLA, M.D. appears in CMS Medicare data with 53 Part D claims and 23 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALEXANDER CASELLA, M.D.'s credentials?
ALEXANDER CASELLA, M.D.'s NPI is 1578919817 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