DR. ANTHONY NICHOLAS KARNEZIS MD, PHD
NPI 1841566221
Pathology - Anatomic Pathology & Clinical Pathology in Sacramento, CA

NPI Status: Active since March 29, 2012

Contact Information

4400 V ST
SACRAMENTO, CA
ZIP 95817
Phone: (916) 734-2651

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  • Individual
  • Male
  • Years of Experience 24
  • Pathology
  • Anatomic Pathology & Clinical Pathology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About ANTHONY KARNEZIS

This page provides the complete NPI Profile along with additional information for Anthony Karnezis, a provider established in Sacramento, California with a medical specialization in Pathology, focusing in anatomic pathology & clinical pathology and more than 24 years of experience. He graduated from Northwestern University Feinberg Medical School in 2002. The healthcare provider is registered in the NPI registry with number 1841566221 assigned on March 2012. The practitioner's primary taxonomy code is 207ZP0102X with license number A121240 (CA). The provider is registered as an individual and his NPI record was last updated 5 years ago.

NPI
1841566221
Provider Name
DR. ANTHONY NICHOLAS KARNEZIS MD, PHD
Gender
Male
Entity Type
Individual
Location Address
4400 V ST SACRAMENTO, CA 95817
Location Phone
(916) 734-2651
Mailing Address
4400 V ST SACRAMENTO, CA 95817
Medical School Name
NORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduation Year
2002
Is Sole Proprietor?
No
Enumeration Date
03-29-2012
Last Update Date
05-19-2020
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Location Map

Secondary Locations

  • 505 Parnassus Ave Rm M580, Box 0102
    San Francisco, CA 94143
    (415) 353-1613

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Pathology Anatomic Pathology & Clinical Pathology

Taxonomy Code
207ZP0102X
Type
Allopathic & Osteopathic Physicians
License No.
A121240
License State
CA
Taxonomy Description
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Medicare Participation & PECOS Enrollment Status

Anthony Karnezis is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Anthony Karnezis is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 8123373388

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20180612003065

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Microscopic genetic analysis of tumor, manual

Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.

This service was performed 40 times for 20 patients

Pathology examination of specimen during surgery, each additional tissue block

During surgery, a pathology examination may be done on additional tissue blocks. This involves taking small samples of tissue and examining them under a microscope. This helps identify any abnormal cells or diseases present, aiding in the precise diagnosis and treatment planning.

This service was performed 20 times for 11 patients

Pathology examination of specimen during surgery, first tissue block

A pathology examination during surgery involves the immediate analysis of a removed tissue sample. This helps the surgeon make decisions during your operation. The "first tissue block" refers to the initial sample examined. It's a vital step to ensure your health.

This service was performed 97 times for 48 patients

Pathology examination of tissue using a microscope, high complexity

A high complexity pathology examination involves studying body tissue under a microscope to identify any abnormalities. This intricate process helps in diagnosing various conditions and deciding on the best treatment plan.

This service was performed 48 times for 38 patients

Pathology examination of tissue using a microscope, intermediate complexity

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

This service was performed 335 times for 198 patients

Pathology examination of tissue using a microscope, moderately high complexity

A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.

This service was performed 193 times for 76 patients

Special stained specimen slides to examine tissue, each additional procedure

Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.

This service was performed 376 times for 65 patients

Special stained specimen slides to examine tissue, initial procedure

This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.

This service was performed 129 times for 79 patients

Surgical pathology consultation and report on referred slides prepared elsewhere

A surgical pathology consultation involves reviewing slides prepared at a different lab to confirm or clarify a diagnosis. It's a second opinion to ensure accuracy. A report with findings and interpretations is then provided for your doctor's reference.

This service was performed 25 times for 24 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $34.3 for a new patient copayment and $26.48 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 95817 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $137.2
  • Minimum New Patient Price $60.44
  • Maximum New Patient Price $180.85
  • Average New Patient Copayment $34.3
  • Minimum New Patient Copayment $15.11
  • Maximum New Patient Copayment $45.21

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $105.95
  • Minimum Established Patient Price $19.88
  • Maximum Established Patient Price $148.15
  • Average Established Patient Copayment $26.48
  • Minimum Established Patient Copayment $4.97
  • Maximum Established Patient Copayment $37.03

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Reviews for DR. ANTHONY NICHOLAS KARNEZIS MD, PHD

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1841566221
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
28811061224
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 8 + 8 + 1 + 1 + 0 + 6 + 1 + 2 + 2 + 4 + 24 = 59
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
60 - 59 = 11

The NPI number 1841566221 is valid because the calculated check digit 1 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 20 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1285616904DR. REGINA GANDOUR-EDWARDS M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1629050356DR. CLAUDIA MARIE GRECO M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1417939158DR. GREGORY REIBER M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1700868437DR. RALPH GREEN M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1598747222DR. HANNE JENSEN M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1487636114DR. GERALD KOST M.D., PH.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1104808831DR. EDWARD LARKIN M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1871575597DR. ROBERT CARDIFF M.D., PH.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1306828033DR. THOMAS KONIA M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1265414908DR. CAROL MARSHALL M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1891777538DR. RAJENDRA RAMSAMOOJ M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1285616920DR. LYDIA HOWELL M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1588647903DR. JYUHN-MIRNG CHEN M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1689657918DR. JEFFREY GREGG M.D.
Individual
Specialist4400 V ST PATHOLOGY BUILDING
SACRAMENTO, CA 95817
(916) 734-2525
1568447571DR. ISHWARLAL JIALAL M.D., PHD.
Individual
Pathology (Clinical Pathology)4400 V ST
SACRAMENTO, CA 95817
(916) 734-0694
1659357325DR. MARK SUPER M.D.
Individual
Specialist4400 V ST
SACRAMENTO, CA 95817
(916) 734-0694
1831165703UNIVERSITY OF CALIFORNIA DAVIS, MEDICAL CENTER
Organization
General Acute Care Hospital4400 V ST
SACRAMENTO, CA 95817
(916) 734-3334
1144265752 LEONOR PABON FERNANDO MD
Individual
Pathology (Anatomic Pathology & Clinical Pathology)4400 V ST PATH BUILDING
SACRAMENTO, CA 95817
(916) 734-3327
1639102262 NALINI MADIRAJU MD
Individual
Specialist4400 V ST
SACRAMENTO, CA 95817
(916) 734-2525
1063551059 KRISTIN ALEXIS OLSON MD
Individual
Pathology (Anatomic Pathology & Clinical Pathology)4400 V ST
SACRAMENTO, CA 95817
(916) 734-3141

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1841566221, enumerated in the NPI registry as an "individual" on March 29, 2012

The provider is located at 4400 V St Sacramento, Ca 95817 and the phone number is (916) 734-2651

The provider's speciality is Pathology with taxonomy code 207ZP0102X with a focus in Anatomic Pathology & Clinical Pathology

The provider has more than 24 years of experience. He graduated from Northwestern University Feinberg Medical School in 2002.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

Medicare beneficiaries should expect a typical cost of $137.2 with an average copayment of $34.3 for new patient appointments. Established patients should expect a typical charge of $105.95 and an average copayment of 26.48. Please review your insurance plan or contact the provider directly to determine your specific costs.

The most common procedures or services performed by this practitioner are: Microscopic genetic analysis of tumor, manual, Pathology examination of specimen during surgery, each additional tissue block, Pathology examination of specimen during surgery, first tissue block, Pathology examination of tissue using a microscope, high complexity, Pathology examination of tissue using a microscope, intermediate complexity, Pathology examination of tissue using a microscope, moderately high complexity, Special stained specimen slides to examine tissue, each additional procedure, Special stained specimen slides to examine tissue, initial procedure and Surgical pathology consultation and report on referred slides prepared elsewhere.

This NPI record was last updated on March 29, 2012. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
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