James Gendernalik, D.O.
NPI 1720283633 · Family Medicine Physician · Saint Joseph, MI
James Gendernalik, D.O. is a Family Medicine Physician provider in Saint Joseph, MI (NPI 1720283633).
Provider details
- NPI number
- 1720283633
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
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
19 yrs in NPPES registry
- Profile completeness33% of score
83% 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 71 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 235 | 72 |
| Losartan Potassium | 120 | 32 |
| Levothyroxine Sodium | 112 | 23 |
| Lisinopril | 88 | 28 |
| Amlodipine Besylate | 85 | 29 |
| Gabapentin | 84 | 11 |
| Trazodone Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$305 across 19 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
Registry dates
- Enumerated
- 2007-06-19
- Last updated
- 2016-02-03
Frequently asked questions
- What is James Gendernalik's NPI number?
- James Gendernalik's National Provider Identifier (NPI) is 1720283633, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Gendernalik's specialty?
- James Gendernalik is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Gendernalik located?
- James Gendernalik's practice location on file with NPPES is 2500 Niles Rd Ste 1, Saint Joseph, MI 49085-3225.
- What is James Gendernalik's phone number?
- The practice phone number listed in the NPPES registry for James Gendernalik is (269) 429-5000.
- Is James Gendernalik's NPI active?
- Yes — James Gendernalik's NPI (1720283633) is active in the NPPES registry as of the last update on 2016-02-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.