2026 NPPES data Colon & Rectal Surgery Physician NPI 1578547188 MD
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ERNEST GRAVES, MD

Colon & Rectal Surgery Physician in AUSTIN, 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
16
Medicare Part D claims · Colon & Rectal Surgery Physician avg: 196
What the federal data reveals: ERNEST GRAVES, MD is a Colon & Rectal Surgery Physician ([object Object]) practicing in AUSTIN, Texas with a Medicare Part D prescribing footprint of 16 claims .

What stands out: ERNEST GRAVES, MD filed 16 Medicare Part D claims in 2023 across AUSTIN, Texas. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

ERNEST GRAVES, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

ERNEST GRAVES, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 12/06/2005

NPI 1578547188

Primary specialty

Colon & Rectal Surgery Physician

Niche

1,608 US NPIs in this specialty

Medicare Part D claims

16 92% vs specialty avg

2023 prescription claims

Specialty avg: 196

Specialty distribution in Texas

How Colon & Rectal Surgery Physician compares to other specialties among Texas providers

Texas providers

Colon & Rectal Surgery Physician share within Texas

1. Colon & Rectal Surgery Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Colon & Rectal Surgery Physician share within Texas

Specialty board-certification context

Estimated specialty board-certified rate — Colon & Rectal Surgery Physician (ABMS / AOA reference)

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

Est. board-certified rate (Colon & Rectal Surgery Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Colon & Rectal 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).

ERNEST GRAVES, MD is a Colon & Rectal Surgery Physician provider practicing in AUSTIN, Texas, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1578547188. 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.

ERNEST GRAVES, MD appears in the CMS NPPES registry as a Colon & Rectal Surgery Physician provider holding MD credentials at 4106 MEDICAL PKWY, AUSTIN, TX, 78756, with a listed phone of (512) 418-1979. NPI 1578547188 was issued on 12/06/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRAVES 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 16 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $442 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.

Colon & Rectal Surgery Physician is a narrow specialty nationwide, with 1,608 enrolled providers across 50 states and an average of 196 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

4106 MEDICAL PKWY
AUSTIN, TX 78756

Provider Details

NPI 1578547188
Specialty Colon & Rectal Surgery Physician
Credentials MD
Gender Male
NPI Issued 12/06/2005

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 ERNEST GRAVES, MD. To verify ERNEST GRAVES, MD'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.

16
Total Claims
$442
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
22
Total Day Supply
431
Generic Drug Cost
$151

Patient Demographics

Average Patient Age
70.6 years
Avg HCC Risk Score
1.17

Colon & Rectal Surgery Physician Overview

How ERNEST GRAVES, MD fits within the Colon & Rectal Surgery Physician landscape nationally.

1,608
Colon & Rectal Surgery Physician Providers in US
50
States with Colon & Rectal Surgery Physician
196
Avg Claims per Provider

ERNEST GRAVES, MD's 16 claims are below the specialty average of 196.

Nearby Colon & Rectal Surgery Physician Providers in Texas

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

Compare Colon & Rectal Surgery Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ERNEST GRAVES, MD's specialty?
ERNEST GRAVES, MD specializes in Colon & Rectal Surgery Physician and practices in AUSTIN, Texas. Credentials: MD.
How much does ERNEST GRAVES, MD prescribe under Medicare Part D?
In 2023, ERNEST GRAVES, MD wrote 16 Medicare Part D claims totaling $442 in drug costs for N/A beneficiaries.
Where is ERNEST GRAVES, MD located?
ERNEST GRAVES, MD is located at 4106 MEDICAL PKWY, AUSTIN, TX, 78756. Phone: (512) 418-1979.
What is ERNEST GRAVES, MD's NPI number?
ERNEST GRAVES, MD's National Provider Identifier (NPI) is 1578547188, issued on 12/06/2005.
How many Colon & Rectal Surgery Physician providers are there in the US?
There are 1,608 Colon & Rectal Surgery Physician providers across 50 states in the US. The average Colon & Rectal Surgery Physician provider writes 196 Medicare Part D claims per year.
Does ERNEST GRAVES, MD accept Medicare?
ERNEST GRAVES, MD appears in CMS Medicare data with 16 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 ERNEST GRAVES, MD's credentials?
ERNEST GRAVES, MD's NPI is 1578547188 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.
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