Registry data as of Aug 27, 2026
2026 NPPES data Emergency Medicine Physician NPI 1053350363 D.O.
Verify on CMS →

Thomas Demaro, D.O.

Emergency Medicine Physician in Knoxville, Tennessee.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 66,293 in Emergency Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
330
Medicare Part D claims · 256 beneficiaries · Emergency Medicine Physician avg: 355

What the federal data shows

Thomas Demaro, D.O. filed 330 Medicare Part D claims in 2024 as an Emergency Medicine Physician in Knoxville, Tennessee.

330
Part D claims, 2024
Likely
board-certified (heuristic)
≥56th
pct by Part D claim volume (lower-bound band)

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.

Federal trust snapshot

What official records show about Thomas Demaro, D.O.

Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1053350363), first enumerated 06/05/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 330 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Hospital affiliations

    2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

Compare Demaro with other Emergency Medicine Physician providers

Same primary specialty, same federal CMS NPPES roster.

Also enrolled in Tennessee

Other specialties in Knoxville: Case Manager/Care Coordinator (1,399) · Mental Health Counselor (814) · Family Nurse Practitioner (675) · Behavior Technician (641)

CMS NPPES provider registry desk

NPI 1053350363 · Emergency Medicine Physician

NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM

  • NPI-10 1053350363
  • ENUM-LEGACY 2006
  • TAX-MEGA 66K Emergency Medicine
  • RX-LIGHT 330
  • BOOK-LIGHT 1,168 in Tennessee
  • PHOTO-ENUM John Calomeni, MD · 2006

Thomas Demaro, D.O.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2024, across all CMS prescribers nationally

330 ≥ 56th percentile 56% of 1,416,883 prescribers are in lower value bands

0–200: 679,947 prescribers (48%). Below this entry. 200–400: 188,835 prescribers (13%). This entry sits in this band. 400–600: 95,866 prescribers (7%). Above this entry. 600–800: 60,107 prescribers (4%). Above this entry. 800–1,000: 43,043 prescribers (3%). Above this entry. 1,000–1,200: 33,612 prescribers (2%). Above this entry. 1,200–1,400: 27,889 prescribers (2%). Above this entry. 1,400–1,600: 23,183 prescribers (2%). Above this entry. 1,600–1,800: 19,917 prescribers (1%). Above this entry. 1,800–2,000: 17,585 prescribers (1%). Above this entry. 2K+: 226,899 prescribers (16%). Above this entry. 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.

The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.

Source CMS Medicare Part D Prescriber Public Use File · 2024

✓
Board certification likely (heuristic, not verified)

Thomas Demaro, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Thomas Demaro, D.O.?

Quality data not reported

NPI registry status

Active

Issued 06/05/2006

NPI 1053350363

Primary specialty

Emergency Medicine Physician

High-volume

66,293 US NPIs in this specialty

Medicare Part D claims

330 7% vs specialty avg

2024 prescription claims

Specialty avg: 355

Specialty distribution in Tennessee

How Emergency Medicine Physician compares to other specialties among Tennessee providers

Tennessee providers
Family Nurse Practitioner6.4%Pharmacist5.8%Student in an Organized Heal…4.7%Behavior Technician4.5%Physical Therapist4.2%Registered Nurse3.9%Emergency Medicine Physician0.9%
Largest specialties in Tennessee (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Emergency Medicine Physician. Verify directly:

How MIPS and board certification work

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).

Practice Address

5823 APPLE VALLEY DR
Knoxville, TN 37924

Provider Details

NPI 1053350363
Specialty Emergency Medicine Physician
Credentials D.O.
Gender Male
NPI Issued 06/05/2006

Hospital and facility affiliations

Facilities where Thomas Demaro, D.O. 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.

Emergency Medicine Services OF FL LLC
Haines City, FL
Paragon Contracting Services LLC
Homestead, FL

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 2024.

330
Total Claims
$3K
Total Drug Cost
256
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
336.133
Total Day Supply
2,957
Generic Drug Cost
$3K
Opioid Claims
48 (14.5% rate)
Antibiotic Claims
112

Patient Demographics

Average Patient Age
69.1 years
Avg HCC Risk Score
2.21
Gender Split
66% female / 34% male
Age Distribution
<65: 60, 65-74: 106, 75-84: 66, 85+: 24

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Thomas Demaro, D.O. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Prednisone
45
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
34
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
25
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
24
Cefuroxime
Cefuroxime Axetil
20
Ondansetron Odt
Ondansetron
18
Ibuprofen
15
Naproxen
15
Tramadol Hcl
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 Thomas Demaro, D.O. fits within the Emergency Medicine Physician landscape nationally.

66,293
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
355
Avg Claims per Provider

Thomas Demaro, D.O.'s 330 claims are below the specialty average of 355.

Nationwide Emergency Medicine Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Demaro, both outside Tennessee so the neighborhoods are not geographic containment.

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

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 Demaro.

One of 1,168 Emergency Medicine Physician providers enrolled in Tennessee, 11 are shown on this page.

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

Frequently Asked Questions

What is Thomas Demaro, D.O.'s specialty? ▼
Thomas Demaro, D.O. specializes in Emergency Medicine Physician and practices in Knoxville, Tennessee. Credentials: D.O..
How much does Thomas Demaro, D.O. prescribe under Medicare Part D? ▼
In 2024, Thomas Demaro, D.O. wrote 330 Medicare Part D claims totaling $3K in drug costs for 256 beneficiaries.
Where is Thomas Demaro, D.O. located? ▼
Thomas Demaro, D.O. is located at 5823 APPLE VALLEY DR, Knoxville, TN, 37924. Phone: (561) 334-3774.
What is Thomas Demaro, D.O.'s NPI number? ▼
Thomas Demaro, D.O.'s National Provider Identifier (NPI) is 1053350363, issued on 06/05/2006.
Does Thomas Demaro, D.O. prescribe opioids? ▼
Yes, Thomas Demaro, D.O. had 48 opioid claims in 2024 with an opioid prescribing rate of 14.5%.
How many Emergency Medicine Physician providers are there in the US? ▼
There are 66,293 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 355 Medicare Part D claims per year.
What drugs does Thomas Demaro, D.O. prescribe most often? ▼
Based on 2024 Medicare Part D data, Thomas Demaro, D.O.'s most frequently prescribed drugs include Prednisone, Oxycodone-Acetaminophen, Nitrofurantoin Mono-Macro. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thomas Demaro, D.O. accept Medicare? ▼
Thomas Demaro, D.O. appears in CMS Medicare data with 330 Part D claims and 256 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Demaro, D.O.'s credentials? ▼
Thomas Demaro, D.O.'s NPI is 1053350363 with credentials D.O.. 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

View source datasets and methodology notes
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 (2024). 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 August 2026 (NPPES) / 2024 (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

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of September 2026.