2026 NPPES data Emergency Medicine Physician NPI 1578115838 MD
Verify on CMS →

CONNOR KARR, MD

Emergency Medicine Physician in NASHVILLE, Tennessee. 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
201
Medicare Part D claims · 126 beneficiaries · Emergency Medicine Physician avg: 352
MIPS score
86.2808/100
▲ 3 pts above national avg 83.1 · [object Object]

What the federal data shows

CONNOR KARR, MD reported a CMS MIPS final score of 86.2808/100 — above the 83.1 national average — and filed 201 Medicare Part D claims in 2023.

86.2808/100
MIPS score · +3 vs avg
201
Part D claims, 2023
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

CONNOR KARR, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

86 Top 48% higher than 52% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

CONNOR KARR, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about CONNOR KARR, MD?

High performer (top quartile)

NPI registry status

Active

Issued 07/16/2019

NPI 1578115838

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

201 43% vs specialty avg

2023 prescription claims

Specialty avg: 352

MIPS final score

86.2808/100 3.180800000000005% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Tennessee

How Emergency Medicine Physician compares to other specialties among Tennessee providers

Tennessee providers

Emergency Medicine Physician share within Tennessee

1. Emergency Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medicine Physician share within Tennessee

Medicare quality performance — MIPS

CONNOR KARR, MD's 2023 MIPS final score plotted against the Emergency Medicine Physician national average

High performer (top quartile)
MIPS Final Score
86.2808/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Emergency Medicine Physician) — 86.2808/100 vs national avg 83.1

0%100%National avg83%86.3%
MIPS final score (Emergency Medicine Physician) — 86.2808/100 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).

CONNOR KARR, MD appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding MD credentials at 3601 THE VANDERBILT CLINIC, NASHVILLE, TN, 37232, with a listed phone of (615) 322-5000. NPI 1578115838 was issued on 07/16/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KARR 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 201 prescription claims written by this provider, covering 126 Medicare beneficiaries and totaling roughly $3K in drug spend, with an opioid prescribing rate of 8.0%. 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 86.2808/100 for the 2023 performance year (Quality 65.1909), compared with the national average of 83.1.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

3601 THE VANDERBILT CLINIC
NASHVILLE, TN 37232

Provider Details

NPI 1578115838
Specialty Emergency Medicine Physician
Credentials MD
Gender Male
NPI Issued 07/16/2019

CMS Quality Score (MIPS)

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

86.2808
Final Score
Avg: 83.1
65.1909
Quality
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where CONNOR KARR, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

VANDERBILT UNIVERSITY MEDICAL CENTER
★★★★★ 5/5
NASHVILLE, TN
Acute Care Hospitals
CMS CCN: 440039
VANDERBILT INTEGRATED PROVIDERS LLC
SHELBYVILLE, TN

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Medicare Part D Prescribing Data

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

201
Total Claims
$3K
Total Drug Cost
126
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
203
Total Day Supply
2,021
Generic Drug Cost
$2K
Opioid Claims
16 (8.0% rate)
Antibiotic Claims
63

Patient Demographics

Average Patient Age
69.0 years
Avg HCC Risk Score
1.66
Gender Split
61% female / 39% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What CONNOR KARR, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Prednisone
29
Cephalexin
23
Ondansetron Odt
Ondansetron
19
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
11
Methocarbamol
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Emergency Medicine Physician Overview

How CONNOR KARR, MD fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

CONNOR KARR, MD's 201 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Tennessee

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

Compare Emergency Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CONNOR KARR, MD's specialty?
CONNOR KARR, MD specializes in Emergency Medicine Physician and practices in NASHVILLE, Tennessee. Credentials: MD.
How much does CONNOR KARR, MD prescribe under Medicare Part D?
In 2023, CONNOR KARR, MD wrote 201 Medicare Part D claims totaling $3K in drug costs for 126 beneficiaries.
What is CONNOR KARR, MD's Medicare quality score?
CONNOR KARR, MD has a CMS MIPS Final Score of 86.2808/100 (Quality: 65.1909). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CONNOR KARR, MD located?
CONNOR KARR, MD is located at 3601 THE VANDERBILT CLINIC, NASHVILLE, TN, 37232. Phone: (615) 322-5000.
What is CONNOR KARR, MD's NPI number?
CONNOR KARR, MD's National Provider Identifier (NPI) is 1578115838, issued on 07/16/2019.
Does CONNOR KARR, MD prescribe opioids?
Yes, CONNOR KARR, MD had 16 opioid claims in 2023 with an opioid prescribing rate of 8.0%.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does CONNOR KARR, MD prescribe most often?
Based on 2023 Medicare Part D data, CONNOR KARR, MD's most frequently prescribed drugs include Prednisone, Cephalexin, Ondansetron Odt. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CONNOR KARR, MD accept Medicare?
CONNOR KARR, MD appears in CMS Medicare data with 201 Part D claims and 126 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CONNOR KARR, MD's credentials?
CONNOR KARR, MD's NPI is 1578115838 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