Dr. Anthony Nicholas Karnezis, MD, PhD

  • Sacramento, CA
  • Pathologist
NPI1841566221PAC ID8123373388
Medicare services, 2024
1,043
Medicare patients, 2024
236
Publications
30
MIPS score, 2024
83
Hospital affiliations
1
Practice address
2315 Stockton Boulevard, Sacramento, CA 95817
Practice phone
Call (916) 734-2011
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UC Davis Medical Center

Hospital · Sacramento, California

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Dr. Anthony Nicholas Karnezis is a pathologist in Sacramento, California

Dr. Karnezis practices at UC Davis Medical Center in Sacramento, California, part of University of California Health.

Dr. Karnezis' NPI, 1841566221, was assigned on March 29, 2012. Dr. Karnezis graduated from Feinberg School of Medicine in 2002. Dr. Karnezis holds California license A121240.

NPI and contact details
Medicare PAC ID
8123373388
NPI enumeration date
March 29, 2012
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(916) 734-2011
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
50
Medical school graduation
2002

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Anthony Nicholas Karnezis practices at UC Davis Medical Center in Sacramento, California

Dr. Karnezis' primary practice is UC Davis Medical Center, at 2315 Stockton Boulevard, Sacramento, CA 95817 in Sacramento County. The practice phone is (916) 734-2011.

Source: Dmand AI Affiliation Data

Dr. Anthony Nicholas Karnezis is affiliated with 2 sites of care and 1 medical group

Dr. Karnezis' primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. The medical group on file is UC Davis Medical Group. Dmand AI also links Dr. Karnezis to 1 more group practice or clinic, named with a free account.

See all 3 affiliations for Dr. Karnezis

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Anthony Nicholas Karnezis' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Karnezis practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UC Davis Medical CenterAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Anthony Nicholas Karnezis is one of 1,354 pathologists in California

Anatomic pathology and clinical pathology is Dr. Karnezis' primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Karnezis is board certified in pathology - anatomic by the American Board of Pathology. Dr. Karnezis is licensed in California.

Specialties and state licenses

  • Anatomic pathology and clinical pathology, CaliforniaPrimaryLicense A121240 · 2012 to 2027 · taxonomy 207ZP0102X

Pathologists near Dr. Karnezis

Counts of pathologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Anthony Nicholas Karnezis billed Medicare for 1,043 services in 2024

CMS data shows 1,043 Medicare services from Dr. Karnezis across 8 procedure codes in 2024, for 236 Medicare patients. Medicare paid $36,458 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 20241,043
Medicare patients236
Paid by Medicare$36,458
Procedure codes8

Dr. Karnezis' Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Lab and pathology
2023: 1,2122024: 1,04314%

Dr. Karnezis compared with the California median for pathologists, 2024

  • Dr. Karnezis
  • California median
Medicare services
1,043vs 1,15310% below
Medicare patients
236vs 44747% below

Medians across 1,094 pathologists in California with Dmand AI profiles that report each measure.

Dr. Karnezis' most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Karnezis

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Anthony Nicholas Karnezis treated 236 Medicare patients in 2024, average age 71

CMS counts 236 Medicare patients who saw Dr. Karnezis in 2024. The largest group is 65 to 74, with 117 patients. 72% of them have high cholesterol, and 68% have high blood pressure. 33% are also on Medicaid. Their average risk score is 1.45, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Karnezis' median patient age at 45, with 96% women.

Medicare patients, 2024236
Average age71
Average risk score1.45
Also on Medicaid33%

Dr. Karnezis' Medicare patients by age, 2024

Dr. Karnezis' Medicare patients by sex, 2024

  • Women21390%
  • Men2310%

Chronic conditions among Dr. Karnezis' Medicare patients, 2024

  1. High cholesterol72%
  2. High blood pressure68%
  3. Arthritis47%
  4. Cancer39%
  5. Diabetes31%
  6. Anxiety29%
  7. Mood disorders27%
  8. Chronic kidney disease25%

Share of Medicare patients with each condition. A patient can have several.

Dr. Karnezis' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 45

Patient panel by sex, all payers

  • Women96%
  • Men4%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Anthony Nicholas Karnezis scored 83 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Karnezis for performance year 2024, reported as part of a group. Dr. Karnezis accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Dr. Karnezis' MIPS scores, performance year 2024

  • 83of 100Final score
  • 64.8of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 69of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

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Dr. Anthony Nicholas Karnezis has 30 publications on record

Dmand AI links 30 papers to Dr. Karnezis, published from 2009 to 2025. 2018 was the busiest year, with 2. The most frequent topics are Ovarian Neoplasms, Biomarkers, Tumor and Epithelial Cells. Dr. Karnezis has published most often in Am J Surg Pathol. Dr. Karnezis' most frequent co-authors are Joseph Thomas Rabban, MD, Jessica Nell McAlpine, MD and Michael E. Jones, MD.

Papers30
Years published2009 to 2025

Dr. Karnezis' papers by year, 2011 to 2025

Topics Dr. Karnezis writes about most

  • Ovarian Neoplasms
  • Biomarkers, Tumor
  • Epithelial Cells
  • Genetic Predisposition to Disease
  • Immunohistochemistry
  • Lung Neoplasms
  • Lymphocytes, Tumor-Infiltrating
  • Nuclear Proteins

Dr. Karnezis' most frequent co-authors

Recent publications by Dr. Karnezis

See all 30 publications and co-authors

See who Dr. Karnezis researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Karnezis works with, so you can find a warm path to the right pathologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Anthony Nicholas Karnezis received $282 in industry payments in 2025

CMS Open Payments shows 2 general payments to Dr. Karnezis from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Caris MPI, Inc. paid the most, $282.

Companies that paid Dr. Karnezis the most, 2025 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Karnezis

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Anthony Nicholas Karnezis graduated from Feinberg School of Medicine

Dr. Karnezis graduated from Feinberg School of Medicine in 2002.

  1. Medical schoolFeinberg School of Medicine
  2. Board certified in pathology - anatomicAmerican Board of Pathology

Source: Dmand AI Professional Profile Data

Dr. Anthony Nicholas Karnezis accepts plans from 4 insurance carriers

Dr. Karnezis is in network with 4 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

  • United Healthcare
  • Blue Cross and Blue Shield of Kansas City
  • CMS Medicare
  • NV State Medicaid

Plan types Dr. Karnezis accepts, by number of carriers

  1. EPO1
  2. HMO1
  3. Medicaid1
  4. Medicare1
  5. POS1

Source: Dmand AI Insurance Network Data

Sources for Dr. Anthony Nicholas Karnezis's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Anthony Nicholas Karnezis

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Anthony Nicholas Karnezis' NPI number?

Dr. Anthony Nicholas Karnezis' NPI number is 1841566221. It was assigned on March 29, 2012, and it is active in the NPI Registry.

What kind of doctor is Dr. Anthony Nicholas Karnezis?

Dr. Anthony Nicholas Karnezis is a pathologist in Sacramento, California. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).

Where does Dr. Anthony Nicholas Karnezis practice?

Dr. Karnezis practices at 2315 Stockton Boulevard, Sacramento, CA 95817. Dr. Karnezis' primary practice is UC Davis Medical Center in Sacramento, California, part of University of California Health. Dmand AI also links Dr. Karnezis to 1 group practice or clinic.

What is Dr. Anthony Nicholas Karnezis' office phone number?

The practice phone on file for Dr. Karnezis is (916) 734-2011.

What is Dr. Anthony Nicholas Karnezis' medical license number?

Dr. Karnezis holds California license A121240.

Which hospitals is Dr. Anthony Nicholas Karnezis affiliated with?

Dr. Karnezis practices at UC Davis Medical Center in Sacramento, California.

What medical group is Dr. Anthony Nicholas Karnezis part of?

Dr. Karnezis is linked to UC Davis Medical Group.

Does Dr. Anthony Nicholas Karnezis accept Medicare?

Yes. CMS data shows Dr. Karnezis billed Medicare for 1,043 services in 2024, and Dr. Karnezis accepts Medicare assignment.

What is Dr. Anthony Nicholas Karnezis' MIPS score?

Dr. Karnezis' MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.

How many Medicare patients does Dr. Anthony Nicholas Karnezis see?

CMS counts 236 Medicare patients who saw Dr. Karnezis in 2024, with an average age of 71.

Show 8 more questionsShow fewer questions

Is Dr. Anthony Nicholas Karnezis board certified?

Yes. Dr. Karnezis is board certified in pathology - anatomic by the American Board of Pathology.

What services does Dr. Anthony Nicholas Karnezis bill to Medicare?

In 2024, Dr. Karnezis' most billed Medicare services were lab and pathology test (88341), lab and pathology test (88305) and lab and pathology test (88342).

Where did Dr. Anthony Nicholas Karnezis go to medical school?

Dr. Karnezis graduated from Feinberg School of Medicine in 2002.

Has Dr. Anthony Nicholas Karnezis received payments from drug or device companies?

CMS Open Payments shows $282 in general payments to Dr. Karnezis from 1 company from 2025 to 2025. The largest total came from Caris MPI, Inc.

How long has Dr. Anthony Nicholas Karnezis been practicing?

Dr. Karnezis graduated from medical school in 2002, 24 years ago.

Does Dr. Anthony Nicholas Karnezis do research?

Dmand AI links 30 publications to Dr. Karnezis, published from 2009 to 2025.

Who does Dr. Anthony Nicholas Karnezis publish with?

Dr. Karnezis' most frequent co-authors are Joseph Thomas Rabban, MD (6 shared papers), Jessica Nell McAlpine, MD (4 shared papers) and Michael E. Jones, MD (3 shared papers).

What insurance does Dr. Anthony Nicholas Karnezis accept?

Dr. Karnezis is in network with 4 carriers, including United Healthcare, Blue Cross and Blue Shield of Kansas City and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

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