Brit Shackley, M.D.
NPI 1336460435 · Anatomic Pathology & Clinical Pathology Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brit Shackley, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Pasadena, CA (NPI 1336460435).
Provider details
- NPI number
- 1336460435
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- A107373 (CA)
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
16 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
5,102 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) |
|---|---|---|
| Protein Measurement, Serum84165 | 711 | $18 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 679 | $28 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 427 | $38 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 377 | $79 |
| Immunologic Analysis Technique on Serum (immunofixation)86334 | 372 | $18 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 286 | $42 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-06-13
- Last updated
- 2013-03-29
Frequently asked questions
- What is Brit Shackley's NPI number?
- Brit Shackley's National Provider Identifier (NPI) is 1336460435, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brit Shackley's specialty?
- Brit Shackley is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Brit Shackley located?
- Brit Shackley's practice location on file with NPPES is 100 W California Blvd, Pasadena, CA 91105-3010.
- What is Brit Shackley's phone number?
- The practice phone number listed in the NPPES registry for Brit Shackley is (626) 397-8616.
- Does Brit Shackley accept Medicare?
- Brit Shackley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brit Shackley's NPI active?
- Yes — Brit Shackley's NPI (1336460435) is active in the NPPES registry as of the last update on 2013-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.