Steven Kolker, MD
NPI 1598726457 · Anatomic Pathology & Clinical Pathology Physician · Santa Monica, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Kolker, MD is a Anatomic Pathology & Clinical Pathology Physician provider in Santa Monica, CA (NPI 1598726457).
Provider details
- NPI number
- 1598726457
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 9780 (NV)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,814 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 | 1,553 | $80 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 438 | $38 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 308 | $29 |
| Surgical Pathology Consultation and Report on Referred Slides Prepared Elsewhere88321 | 297 | $104 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 181 | $84 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 156 | $104 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$181 across 3 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 (1)
- 1815 E 19th St Ste BThe Dalles, OR 97058-3385Phone: (541) 316-6575Fax: (541) 210-8913
Registry dates
- Enumerated
- 2006-03-30
- Last updated
- 2022-03-28
- Certified
- 2022-03-28
Frequently asked questions
- What is Steven Kolker's NPI number?
- Steven Kolker's National Provider Identifier (NPI) is 1598726457, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Kolker's specialty?
- Steven Kolker is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Kolker located?
- Steven Kolker's practice location on file with NPPES is 2121 Santa Monica Blvd, Santa Monica, CA 90404-2303.
- What is Steven Kolker's phone number?
- The practice phone number listed in the NPPES registry for Steven Kolker is (310) 829-8101.
- Does Steven Kolker accept Medicare?
- Steven Kolker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Kolker's NPI active?
- Yes — Steven Kolker's NPI (1598726457) is active in the NPPES registry as of the last update on 2022-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.