2026 NPPES data Emergency Medicine Physician NPI 1821059981 M.D.
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TIMOTHY MCKERNAN, M.D.

Emergency Medicine Physician in ROANOKE, 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
11K
Medicare Part D claims · 525 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
79%
generic claims · 21% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

TIMOTHY MCKERNAN, M.D. filed 11,202 Medicare Part D claims in 2023 as a Emergency Medicine Physician in ROANOKE, Virginia, prescribing 79% generic.

11K
Part D claims, 2023
79%
generic prescribing
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.

TIMOTHY MCKERNAN, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

11,202 Top 2% higher than 98% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

TIMOTHY MCKERNAN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — 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 TIMOTHY MCKERNAN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 03/29/2006

NPI 1821059981

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

11,202 3082% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Virginia

How Emergency Medicine Physician compares to other specialties among Virginia providers

Virginia providers

Emergency Medicine Physician share within Virginia

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

Specialty board-certification context

Estimated specialty board-certified rate — Emergency Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Emergency Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Emergency Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Emergency Medicine Physician) — ABMS / AOA estimate

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).

TIMOTHY MCKERNAN, M.D. appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding M.D. credentials at 1906 BELLEVIEW AVE SE, ROANOKE, VA, 24014, with a listed phone of (540) 981-7000. NPI 1821059981 was issued on 03/29/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MCKERNAN 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 11,202 prescription claims written by this provider, covering 525 Medicare beneficiaries and totaling roughly $676K in drug spend, split 21% brand-name and 79% generic by claim count, with an opioid prescribing rate of 0.2%. 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.

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

1906 BELLEVIEW AVE SE
ROANOKE, VA 24014

Provider Details

NPI 1821059981
Specialty Emergency Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 03/29/2006

Hospital and facility affiliations

Facilities where TIMOTHY MCKERNAN, M.D. 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.

UNIVERSAL HEALTH CORPORATION
SALEM, VA

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

Brand vs generic prescribing mix · Typical

TIMOTHY MCKERNAN, M.D. — brand share 21.0%
Specialty average (est.)

21% brand-name claims vs 79% generic, on 11,202 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

11,202
Total Claims
$676K
Total Drug Cost
525
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
11,230
Total Day Supply
225,786
Brand vs Generic
21% brand / 79% generic
Brand Drug Cost
$449K
Generic Drug Cost
$226K
Opioid Claims
21 (0.2% rate)
Antibiotic Claims
291

Patient Demographics

Average Patient Age
79.7 years
Avg HCC Risk Score
2.74
Gender Split
69% female / 31% male
Age Distribution
<65: 49, 65-74: 114, 75-84: 157, 85+: 205

Top Prescribed Drugs (Medicare Part D)

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

What TIMOTHY MCKERNAN, M.D. 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
Furosemide
511
Levothyroxine Sodium
494
Eliquis
Apixaban
447
Atorvastatin Calcium
434
Amlodipine Besylate
381
Metoprolol Tartrate
301
Potassium Chloride
290
Pantoprazole Sodium
263
Sertraline Hcl
238
Lisinopril
204

* 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 TIMOTHY MCKERNAN, M.D. 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

TIMOTHY MCKERNAN, M.D.'s 11,202 claims are above the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Virginia

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

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

Frequently Asked Questions

What is TIMOTHY MCKERNAN, M.D.'s specialty?
TIMOTHY MCKERNAN, M.D. specializes in Emergency Medicine Physician and practices in ROANOKE, Virginia. Credentials: M.D..
How much does TIMOTHY MCKERNAN, M.D. prescribe under Medicare Part D?
In 2023, TIMOTHY MCKERNAN, M.D. wrote 11,202 Medicare Part D claims totaling $676K in drug costs for 525 beneficiaries.
Where is TIMOTHY MCKERNAN, M.D. located?
TIMOTHY MCKERNAN, M.D. is located at 1906 BELLEVIEW AVE SE, ROANOKE, VA, 24014. Phone: (540) 981-7000.
What is TIMOTHY MCKERNAN, M.D.'s NPI number?
TIMOTHY MCKERNAN, M.D.'s National Provider Identifier (NPI) is 1821059981, issued on 03/29/2006.
Does TIMOTHY MCKERNAN, M.D. prescribe more brand-name or generic drugs?
TIMOTHY MCKERNAN, M.D.'s prescribing is 21% brand-name and 79% generic drugs by claim count, with $449K in brand drug costs.
Does TIMOTHY MCKERNAN, M.D. prescribe opioids?
Yes, TIMOTHY MCKERNAN, M.D. had 21 opioid claims in 2023 with an opioid prescribing rate of 0.2%.
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 TIMOTHY MCKERNAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, TIMOTHY MCKERNAN, M.D.'s most frequently prescribed drugs include Furosemide, Levothyroxine Sodium, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TIMOTHY MCKERNAN, M.D. accept Medicare?
TIMOTHY MCKERNAN, M.D. appears in CMS Medicare data with 11,202 Part D claims and 525 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TIMOTHY MCKERNAN, M.D.'s credentials?
TIMOTHY MCKERNAN, M.D.'s NPI is 1821059981 with credentials M.D.. 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.
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