Keith Dufendach, MD
NPI 1821525429 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Muskegon, MI
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Keith Dufendach, MD is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Muskegon, MI (NPI 1821525429).
Provider details
- NPI number
- 1821525429
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianPrimary208G00000XLicense 4301513912 (MI)
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
9 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,074 across 13 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 310 Lafayette Ave Se Ste 300Grand Rapids, MI 49503-4693Phone: (616) 685-3450Fax: (616) 685-3454
- 3600 Forbes Ave Ste 140Pittsburgh, PA 15213-3410Phone: (412) 647-6340
Registry dates
- Enumerated
- 2017-05-15
- Last updated
- 2025-06-03
- Certified
- 2025-06-03
Frequently asked questions
- What is Keith Dufendach's NPI number?
- Keith Dufendach's National Provider Identifier (NPI) is 1821525429, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Keith Dufendach's specialty?
- Keith Dufendach is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Keith Dufendach located?
- Keith Dufendach's practice location on file with NPPES is 1560 E Sherman Blvd Ste 309, Muskegon, MI 49444-1850.
- What is Keith Dufendach's phone number?
- The practice phone number listed in the NPPES registry for Keith Dufendach is (231) 672-8643.
- Does Keith Dufendach accept Medicare?
- Keith Dufendach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Keith Dufendach's NPI active?
- Yes — Keith Dufendach's NPI (1821525429) is active in the NPPES registry as of the last update on 2025-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.