Gregory Henderson, MD, PHD
NPI 1407804859 · Anatomic Pathology & Clinical Pathology Physician · Bremerton, WA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Henderson, MD, PHD is a Anatomic Pathology & Clinical Pathology Physician provider in Bremerton, WA (NPI 1407804859).
Provider details
- NPI number
- 1407804859
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- MD00048144 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
383 Medicare services, 2024 (ranked within specialty)
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 methodology.
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, Moderately High Complexity88307 | 149 | $85 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 68 | $43 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 56 | $36 |
| Pathology Examination of Specimen During Surgery, First Tissue Block88331 | 48 | $65 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 27 | $80 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 21 | $39 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-05
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Henderson's NPI number?
- Gregory Henderson's National Provider Identifier (NPI) is 1407804859, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Henderson's specialty?
- Gregory Henderson is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Henderson located?
- Gregory Henderson's practice location on file with NPPES is 2520 Cherry Ave, Bremerton, WA 98310-4229.
- What is Gregory Henderson's phone number?
- The practice phone number listed in the NPPES registry for Gregory Henderson is (360) 792-6731.
- Does Gregory Henderson accept Medicare?
- Gregory Henderson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Henderson's NPI active?
- Yes — Gregory Henderson's NPI (1407804859) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.