2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1134625395 DO
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CHELSEA HORN, DO

Critical Care Medicine (Internal Medicine) Physician in TYLER, Texas. 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
582
Medicare Part D claims · 362 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K

What the federal data shows

CHELSEA HORN, DO filed 582 Medicare Part D claims in 2023 as a Critical Care Medicine (Internal Medicine) Physician in TYLER, Texas.

582
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.

CHELSEA HORN, DO's Medicare Part D volume vs every U.S. prescriber

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

582 Top 34% higher than 66% 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%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

CHELSEA HORN, DO 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 CHELSEA HORN, DO?

Quality data not reported

NPI registry status

Active

Issued 04/04/2018

NPI 1134625395

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,631 US NPIs in this specialty

Medicare Part D claims

582 46% vs specialty avg

2023 prescription claims

Specialty avg: 1,069

Specialty distribution in Texas

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Texas providers

Texas providers

Critical Care Medicine (Internal Medicine) Physician share within Texas

1. Critical Care Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Critical Care Medicine (Internal Medicine) Physician share within Texas

Specialty board-certification context

Estimated specialty board-certified rate — Critical Care Medicine (Internal Medicine) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Critical Care Medicine (Internal Medicine) Physician ABMS/AOA estimate

Est. board-certified rate (Critical Care Medicine (Internal Medicine) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Critical Care Medicine (Internal 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).

CHELSEA HORN, DO appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding DO credentials at 800 E DAWSON ST, TYLER, TX, 75701, with a listed phone of (903) 606-7587. NPI 1134625395 was issued on 04/04/2018. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HORN 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 582 prescription claims written by this provider, covering 362 Medicare beneficiaries and totaling roughly $10K in drug spend, with an opioid prescribing rate of 16.2%. 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.

Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,631 enrolled providers across 53 states and an average of 1,069 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

800 E DAWSON ST
TYLER, TX 75701

Provider Details

NPI 1134625395
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials DO
Gender Female
NPI Issued 04/04/2018

Hospital and facility affiliations

Facilities where CHELSEA HORN, DO 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.

NORTHEAST TEXAS EMERGENCY PHYSICIANS PLLC
SULPHUR SPRINGS, TX

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

License & disciplinary context — Texas TMB 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 — they are NOT specific to CHELSEA HORN, DO. To verify CHELSEA HORN, DO's current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases

TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

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

582
Total Claims
$10K
Total Drug Cost
362
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
586
Total Day Supply
4,991
Generic Drug Cost
$6K
Opioid Claims
94 (16.2% rate)
Antibiotic Claims
196

Patient Demographics

Average Patient Age
71.0 years
Avg HCC Risk Score
1.66
Gender Split
64% female / 36% male
Age Distribution
<65: 76, 65-74: 138, 75-84: 106, 85+: 42

Top Prescribed Drugs (Medicare Part D)

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

What CHELSEA HORN, DO 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
Ondansetron Odt
Ondansetron
49
Prednisone
44
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
40
Cephalexin
38
Acetaminophen-Codeine
Acetaminophen With Codeine
37
Tramadol Hcl
30
Doxycycline Hyclate
27
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
27
Cefuroxime
Cefuroxime Axetil
19
Azithromycin
16

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

Critical Care Medicine (Internal Medicine) Physician Overview

How CHELSEA HORN, DO fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,631
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider

CHELSEA HORN, DO's 582 claims are below the specialty average of 1,069.

Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Texas

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

Compare Critical Care Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CHELSEA HORN, DO's specialty?
CHELSEA HORN, DO specializes in Critical Care Medicine (Internal Medicine) Physician and practices in TYLER, Texas. Credentials: DO.
How much does CHELSEA HORN, DO prescribe under Medicare Part D?
In 2023, CHELSEA HORN, DO wrote 582 Medicare Part D claims totaling $10K in drug costs for 362 beneficiaries.
Where is CHELSEA HORN, DO located?
CHELSEA HORN, DO is located at 800 E DAWSON ST, TYLER, TX, 75701. Phone: (903) 606-7587.
What is CHELSEA HORN, DO's NPI number?
CHELSEA HORN, DO's National Provider Identifier (NPI) is 1134625395, issued on 04/04/2018.
Does CHELSEA HORN, DO prescribe opioids?
Yes, CHELSEA HORN, DO had 94 opioid claims in 2023 with an opioid prescribing rate of 16.2%.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US?
There are 6,631 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does CHELSEA HORN, DO prescribe most often?
Based on 2023 Medicare Part D data, CHELSEA HORN, DO's most frequently prescribed drugs include Ondansetron Odt, Prednisone, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHELSEA HORN, DO accept Medicare?
CHELSEA HORN, DO appears in CMS Medicare data with 582 Part D claims and 362 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHELSEA HORN, DO's credentials?
CHELSEA HORN, DO's NPI is 1134625395 with credentials DO. 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