2026 NPPES data Trauma Surgery Physician NPI 1770105066 DO
Verify on CMS →

HUNTER HAYS, DO

Trauma Surgery Physician in SAINT LOUIS, Missouri. 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
13
Medicare Part D claims · Trauma Surgery Physician avg: 70
What the federal data reveals: HUNTER HAYS, DO is a Trauma Surgery Physician ([object Object]) practicing in SAINT LOUIS, Missouri with a Medicare Part D prescribing footprint of 13 claims .

What stands out: HUNTER HAYS, DO filed 13 Medicare Part D claims in 2023 across SAINT LOUIS, Missouri. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

HUNTER HAYS, 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).

HUNTER HAYS, DO at a glance

Quality data not reported

NPI registry status

Active

Issued 05/11/2020

NPI 1770105066

Primary specialty

Trauma Surgery Physician

Niche

959 US NPIs in this specialty

Medicare Part D claims

13 81% vs specialty avg

2023 prescription claims

Specialty avg: 70

Specialty distribution in Missouri

How Trauma Surgery Physician compares to other specialties among Missouri providers

Missouri providers

Trauma Surgery Physician share within Missouri

1. Trauma Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Trauma Surgery Physician share within Missouri

Specialty board-certification context

Estimated specialty board-certified rate — Trauma Surgery Physician (ABMS / AOA reference)

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

Est. board-certified rate (Trauma Surgery Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Trauma Surgery 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).

HUNTER HAYS, DO is a Trauma Surgery Physician provider practicing in SAINT LOUIS, Missouri, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DO. NPI: 1770105066. 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.

HUNTER HAYS, DO appears in the CMS NPPES registry as a Trauma Surgery Physician provider holding DO credentials at 1 BARNES JEWISH HOSPITAL PLZ, SAINT LOUIS, MO, 63110, with a listed phone of (314) 362-5298. NPI 1770105066 was issued on 05/11/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HAYS 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 13 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $85 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.

Trauma Surgery Physician is a narrow specialty nationwide, with 959 enrolled providers across 49 states and an average of 70 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

1 BARNES JEWISH HOSPITAL PLZ
SAINT LOUIS, MO 63110

Provider Details

NPI 1770105066
Specialty Trauma Surgery Physician
Credentials DO
Gender Male
NPI Issued 05/11/2020

Hospital and facility affiliations

Facilities where HUNTER HAYS, 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.

WASHINGTON UNIVERSITY
SAINT LOUIS, MO

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.

13
Total Claims
$85
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
13
Total Day Supply
104
Brand Drug Cost
$0
Generic Drug Cost
$85

Patient Demographics

Average Patient Age
74.0 years
Avg HCC Risk Score
1.19

Trauma Surgery Physician Overview

How HUNTER HAYS, DO fits within the Trauma Surgery Physician landscape nationally.

959
Trauma Surgery Physician Providers in US
49
States with Trauma Surgery Physician
70
Avg Claims per Provider

HUNTER HAYS, DO's 13 claims are below the specialty average of 70.

Nearby Trauma Surgery Physician Providers in Missouri

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

Compare Trauma Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is HUNTER HAYS, DO's specialty?
HUNTER HAYS, DO specializes in Trauma Surgery Physician and practices in SAINT LOUIS, Missouri. Credentials: DO.
How much does HUNTER HAYS, DO prescribe under Medicare Part D?
In 2023, HUNTER HAYS, DO wrote 13 Medicare Part D claims totaling $85 in drug costs for N/A beneficiaries.
Where is HUNTER HAYS, DO located?
HUNTER HAYS, DO is located at 1 BARNES JEWISH HOSPITAL PLZ, SAINT LOUIS, MO, 63110. Phone: (314) 362-5298.
What is HUNTER HAYS, DO's NPI number?
HUNTER HAYS, DO's National Provider Identifier (NPI) is 1770105066, issued on 05/11/2020.
How many Trauma Surgery Physician providers are there in the US?
There are 959 Trauma Surgery Physician providers across 49 states in the US. The average Trauma Surgery Physician provider writes 70 Medicare Part D claims per year.
Does HUNTER HAYS, DO accept Medicare?
HUNTER HAYS, DO appears in CMS Medicare data with 13 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 HUNTER HAYS, DO's credentials?
HUNTER HAYS, DO's NPI is 1770105066 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