NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1477549699 MD
Verify on CMS → John Johanson, MD
Gastroenterology Physician in Beloit, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,601 in Gastroenterology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
John Johanson, MD is a Gastroenterology Physician in Beloit, Wisconsin, listed in the federal CMS National Provider Identifier registry.
- #61
- Gastroenterology Physician rank among Wisconsin specialties
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.
CMS NPPES provider registry desk
NPI 1477549699 · Gastroenterology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1477549699
- ENUM-LEGACY 2005
- TAX-MID 17K Gastroenterology Physician
- RX-NONE No Part D
- BOOK-THIN 268 in Wisconsin
- PHOTO-ENUM Charles Lostak · 2005
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Board-eligible specialty (heuristic, not verified)
John Johanson, 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 John Johanson, MD?
Quality data not reportedPrimary specialty
Gastroenterology Physician
Specialty distribution in Wisconsin
How Gastroenterology Physician compares to other specialties among Wisconsin providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gastroenterology Physician. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1477549699 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/22/2005 |
Gastroenterology Physician Overview
How John Johanson, MD fits within the Gastroenterology Physician landscape nationally.
16,601
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Nationwide Gastroenterology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Johanson, both outside Wisconsin so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Gastroenterology Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Johanson.
One of 268 Gastroenterology Physician providers enrolled in Wisconsin, 5 are shown here.
Dr. Frank Aberger
MD
La Crosse, WI
Dr. Aboud Affi
M.D.
Milwaukee, WI
Dr. Banke Agarwal
MD
La Crosse, WI
Dr. Parul Agarwal
M.D.
Madison, WI
Dr. Dilpesh Agrawal
M.D, MRCP
Milwaukee, WI
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is John Johanson, MD's specialty? ▼
John Johanson, MD specializes in Gastroenterology Physician and practices in Beloit, Wisconsin. Credentials: MD.
Where is John Johanson, MD located? ▼
John Johanson, MD is located at 1905 E, HUEBBE PARKWAY, Beloit, WI, 53511. Phone: (608) 364-1460.
What is John Johanson, MD's NPI number? ▼
John Johanson, MD's National Provider Identifier (NPI) is 1477549699, issued on 09/22/2005.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,601 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
Does John Johanson, MD accept Medicare? ▼
John Johanson, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify John Johanson, MD's credentials? ▼
John Johanson, MD's NPI is 1477549699 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
View source datasets and methodology notes
- 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.
- 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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.