James Malleis, MD
NPI 1255836847 · Anatomic Pathology & Clinical Pathology Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Malleis, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Grand Rapids, MI (NPI 1255836847).
Provider details
- NPI number
- 1255836847
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- 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 tenure25% of score
8 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,455 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 862 | $34 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 164 | $25 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 146 | $75 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 82 | $32 |
| Pathology Examination of Tissue Using a Microscope, High Complexity88309 | 59 | $133 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 50 | $11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$29 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
Additional practice locations (1)
- 1959 Ne Pacific StSeattle, WA 98195-0001Phone: (206) 543-1140
Registry dates
- Enumerated
- 2018-03-27
- Last updated
- 2023-07-05
- Certified
- 2023-07-05
Frequently asked questions
- What is James Malleis's NPI number?
- James Malleis's National Provider Identifier (NPI) is 1255836847, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Malleis's specialty?
- James Malleis is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is James Malleis located?
- James Malleis's practice location on file with NPPES is 35 Michigan St Ne Ste 6330, Grand Rapids, MI 49503-2530.
- What is James Malleis's phone number?
- The practice phone number listed in the NPPES registry for James Malleis is (800) 475-6236.
- Does James Malleis accept Medicare?
- James Malleis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Malleis's NPI active?
- Yes — James Malleis's NPI (1255836847) is active in the NPPES registry as of the last update on 2023-07-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.