John Heiser, MD
NPI 1174596639 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Grand Rapids, MI
John Heiser, MD is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Grand Rapids, MI (NPI 1174596639).
Provider details
- NPI number
- 1174596639
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 20976 (CO)
Specialties & taxonomies
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianPrimary208G00000XLicense 4301053721 (MI)
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- 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.
$172 across 1 record (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
Registry dates
- Enumerated
- 2006-02-07
- Last updated
- 2023-01-04
- Certified
- 2023-01-04
Frequently asked questions
- What is John Heiser's NPI number?
- John Heiser's National Provider Identifier (NPI) is 1174596639, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Heiser's specialty?
- John Heiser is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is John Heiser located?
- John Heiser's practice location on file with NPPES is 221 Michigan St Ne Ste 300, Grand Rapids, MI 49503-2537.
- What is John Heiser's phone number?
- The practice phone number listed in the NPPES registry for John Heiser is (616) 459-7258.
- Is John Heiser's NPI active?
- Yes — John Heiser's NPI (1174596639) is active in the NPPES registry as of the last update on 2023-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.