Anthony Karnezis, MD, PHD
NPI 1841566221 · Anatomic Pathology & Clinical Pathology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anthony Karnezis, MD, PHD is a Anatomic Pathology & Clinical Pathology Physician provider in Sacramento, CA (NPI 1841566221).
Provider details
- NPI number
- 1841566221
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- A121240 (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
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,043 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) |
|---|---|---|
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 360 | $28 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 212 | $38 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 130 | $35 |
| Pathology Examination of Specimen During Surgery, First Tissue Block88331 | 116 | $62 |
| Microscopic Genetic Analysis of Tumor, Manual88360 | 98 | $41 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 83 | $81 |
Practice location
Mailing address
Additional practice locations (1)
- 505 Parnassus AveRm M580, Box 0102San Francisco, CA 94143-0102Phone: (415) 353-1613
Registry dates
- Enumerated
- 2012-03-29
- Last updated
- 2020-05-19
- Certified
- 2020-05-19
Frequently asked questions
- What is Anthony Karnezis's NPI number?
- Anthony Karnezis's National Provider Identifier (NPI) is 1841566221, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anthony Karnezis's specialty?
- Anthony Karnezis is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Anthony Karnezis located?
- Anthony Karnezis's practice location on file with NPPES is 4400 V St, Sacramento, CA 95817.
- What is Anthony Karnezis's phone number?
- The practice phone number listed in the NPPES registry for Anthony Karnezis is (916) 734-2651.
- Does Anthony Karnezis accept Medicare?
- Anthony Karnezis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anthony Karnezis's NPI active?
- Yes — Anthony Karnezis's NPI (1841566221) is active in the NPPES registry as of the last update on 2020-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.