2026 NPPES data Nuclear Radiology Physician NPI 1265450274 MD
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MICHAEL KARNAZE, MD

Nuclear Radiology Physician in FAIRFAX, Virginia. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
14
Medicare Part D claims · Nuclear Radiology Physician avg: 1K
MIPS score
46.8096/100
▼ 36 pts below national avg 83.1 · [object Object]
What the federal data reveals: MICHAEL KARNAZE, MD is a Nuclear Radiology Physician ([object Object]) practicing in FAIRFAX, Virginia with a Medicare Part D prescribing footprint of 14 claims . Their CMS MIPS Final Score of 46.8096/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: MICHAEL KARNAZE, MD reported a CMS MIPS final score of 46.8096 out of 100, below the 83.1 national average, and filed 14 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

MICHAEL KARNAZE, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

MICHAEL KARNAZE, MD at a glance

Below national average

NPI registry status

Active

Issued 07/17/2006

NPI 1265450274

Primary specialty

Nuclear Radiology Physician

Niche

664 US NPIs in this specialty

Medicare Part D claims

14 99% vs specialty avg

2023 prescription claims

Specialty avg: 1,000

MIPS final score

46.8096/100 36.29039999999999% pts

Below average band

vs 83.1 national avg

Specialty distribution in Virginia

How Nuclear Radiology Physician compares to other specialties among Virginia providers

Virginia providers

Nuclear Radiology Physician share within Virginia

1. Nuclear Radiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nuclear Radiology Physician share within Virginia

Medicare quality performance — MIPS

MICHAEL KARNAZE, MD's 2023 MIPS final score plotted against the Nuclear Radiology Physician national average

Below national average
MIPS Final Score
46.8096/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nuclear Radiology Physician) — 46.8096/100 vs national avg 83.1

0%100%National avg83%46.8%
MIPS final score (Nuclear Radiology Physician) — 46.8096/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

MICHAEL KARNAZE, MD is a Nuclear Radiology Physician provider practicing in FAIRFAX, Virginia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1265450274. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

MICHAEL KARNAZE, MD appears in the CMS NPPES registry as a Nuclear Radiology Physician provider holding MD credentials at 2722 MERRILEE DR, FAIRFAX, VA, 22031, with a listed phone of (703) 698-4483. NPI 1265450274 was issued on 07/17/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KARNAZE most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 14 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $334 in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 46.8096/100 for the 2023 performance year (Quality 30.827, Cost 49.5159), compared with the national average of 83.1.

Nuclear Radiology Physician is a narrow specialty nationwide, with 664 enrolled providers across 51 states and an average of 1,000 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

2722 MERRILEE DR
FAIRFAX, VA 22031

Provider Details

NPI 1265450274
Specialty Nuclear Radiology Physician
Credentials MD
Gender Male
NPI Issued 07/17/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

46.8096
Final Score
Avg: 83.1
30.827
Quality
49.5159
Cost

Reporting: Group practice

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

14
Total Claims
$334
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
16
Total Day Supply
304
Generic Drug Cost
$314

Patient Demographics

Average Patient Age
68.8 years
Avg HCC Risk Score
0.92

Nuclear Radiology Physician Overview

How MICHAEL KARNAZE, MD fits within the Nuclear Radiology Physician landscape nationally.

664
Nuclear Radiology Physician Providers in US
51
States with Nuclear Radiology Physician
1,000
Avg Claims per Provider

MICHAEL KARNAZE, MD's 14 claims are below the specialty average of 1,000.

Nearby Nuclear Radiology Physician Providers in Virginia

Other clinicians with the same primary specialty enrolled in Virginia, drawn from the same CMS NPPES roster as KARNAZE.

Compare Nuclear Radiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MICHAEL KARNAZE, MD's specialty?
MICHAEL KARNAZE, MD specializes in Nuclear Radiology Physician and practices in FAIRFAX, Virginia. Credentials: MD.
How much does MICHAEL KARNAZE, MD prescribe under Medicare Part D?
In 2023, MICHAEL KARNAZE, MD wrote 14 Medicare Part D claims totaling $334 in drug costs for N/A beneficiaries.
What is MICHAEL KARNAZE, MD's Medicare quality score?
MICHAEL KARNAZE, MD has a CMS MIPS Final Score of 46.8096/100 (Quality: 30.827, Cost: 49.5159). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MICHAEL KARNAZE, MD located?
MICHAEL KARNAZE, MD is located at 2722 MERRILEE DR, FAIRFAX, VA, 22031. Phone: (703) 698-4483.
What is MICHAEL KARNAZE, MD's NPI number?
MICHAEL KARNAZE, MD's National Provider Identifier (NPI) is 1265450274, issued on 07/17/2006.
How many Nuclear Radiology Physician providers are there in the US?
There are 664 Nuclear Radiology Physician providers across 51 states in the US. The average Nuclear Radiology Physician provider writes 1,000 Medicare Part D claims per year.
Does MICHAEL KARNAZE, MD accept Medicare?
MICHAEL KARNAZE, MD appears in CMS Medicare data with 14 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL KARNAZE, MD's credentials?
MICHAEL KARNAZE, MD's NPI is 1265450274 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology