2026 NPPES data Trauma Surgery Physician NPI 1972687077 MD
Verify on CMS →

Oscar Guillamondegui, MD

Trauma Surgery Physician in Nashville, 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 959 in Trauma Surgery 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
13
Medicare Part D claims · Trauma Surgery Physician avg: 70
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Oscar Guillamondegui, MD filed 13 Medicare Part D claims in 2023 as a Trauma Surgery Physician in Nashville, Tennessee.

13
Part D claims, 2023

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.

Oscar Guillamondegui, MD's Medicare Part D volume vs every U.S. prescriber

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

13 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 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. 2K+: 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-eligible specialty (heuristic, not verified)

Oscar Guillamondegui, 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).

What does the federal data show about Oscar Guillamondegui, MD?

Quality data not reported

NPI registry status

Active

Issued 10/25/2006

NPI 1972687077

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 Tennessee

How Trauma Surgery Physician compares to other specialties among Tennessee providers

Tennessee providers
Family Nurse Practitioner - 6.4%Family Nurse Practitioner6.4%Pharmacist - 5.9%Pharmacist5.9%Student in an Organized Health Care Education/Training Program - 4.6%Student in an Organized Health Care Education/Training Program4.6%Physical Therapist - 4.2%Physical Therapist4.2%Behavior Technician - 4.2%Behavior Technician4.2%Registered Nurse - 3.9%Registered Nurse3.9%Trauma Surgery Physician - 0%Trauma Surgery Physician0%
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 Trauma Surgery Physician. Verify directly:

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).

Oscar Guillamondegui, MD appears in the CMS NPPES registry as a Trauma Surgery Physician provider holding MD credentials at 3601 TVC, Nashville, TN, 37232, with a listed phone of (615) 322-3000. NPI 1972687077 was issued on 10/25/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Guillamondegui 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 $103 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

3601 TVC
Nashville, TN 37232

Provider Details

NPI 1972687077
Specialty Trauma Surgery Physician
Credentials MD
Gender Male
NPI Issued 10/25/2006

Medicare Part D Prescribing Data

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

13
Total Claims
$103
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
13
Total Day Supply
95
Generic Drug Cost
$44

Patient Demographics

Average Patient Age
73.3 years
Avg HCC Risk Score
1.27

Trauma Surgery Physician Overview

How Oscar Guillamondegui, MD 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

Oscar Guillamondegui, MD's 13 claims are below the specialty average of 70.

Nearby Trauma Surgery Physician Providers in Tennessee

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

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Tennessee medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Trauma Surgery Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Oscar Guillamondegui, MD's specialty?
Oscar Guillamondegui, MD specializes in Trauma Surgery Physician and practices in Nashville, Tennessee. Credentials: MD.
How much does Oscar Guillamondegui, MD prescribe under Medicare Part D?
In 2023, Oscar Guillamondegui, MD wrote 13 Medicare Part D claims totaling $103 in drug costs for N/A beneficiaries.
Where is Oscar Guillamondegui, MD located?
Oscar Guillamondegui, MD is located at 3601 TVC, Nashville, TN, 37232. Phone: (615) 322-3000.
What is Oscar Guillamondegui, MD's NPI number?
Oscar Guillamondegui, MD's National Provider Identifier (NPI) is 1972687077, issued on 10/25/2006.
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 Oscar Guillamondegui, MD accept Medicare?
Oscar Guillamondegui, MD 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 Oscar Guillamondegui, MD's credentials?
Oscar Guillamondegui, MD's NPI is 1972687077 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

Compiled from official public sources by the PlainDoctor editorial team.