NPI registry status
Active
2026 NPPES data Surgery Physician NPI 1811550742 MD
Verify on CMS → Isabella Guajardo Sant, MD
Surgery Physician in Mountain Home, Arkansas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 36,778 in 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
103
Medicare Part D claims · 54 beneficiaries · Surgery Physician avg: 174
Industry payments
$14.11
1 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Isabella Guajardo Sant, MD filed 103 Medicare Part D claims in 2024 as a Surgery Physician in Mountain Home, Arkansas.
- 103
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥34th
- 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 Isabella Guajardo Sant, MD
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 1811550742), first enumerated 04/16/2019.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 103 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.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$14.11 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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.
CMS NPPES provider registry desk
NPI 1811550742 · Surgery Physician
NPI-10 · ENUM-RECENT · TAX-MID · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1811550742
- ENUM-RECENT 2019
- TAX-MID 37K Surgery Physician
- RX-LIGHT 103
- BOOK-THIN 293 in Arkansas
- PHOTO-ENUM Cory Nonnemacher · 2019
Isabella Guajardo Sant, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
103 ≥ 34th percentile 34% of 1,416,883 prescribers are in lower value bands
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)
Isabella Guajardo Sant, MD 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 Isabella Guajardo Sant, MD?
Quality data not reportedPrimary specialty
Surgery Physician
Medicare Part D claims
103 41% vs specialty avg
Specialty distribution in Arkansas
How Surgery Physician compares to other specialties among Arkansas 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 Surgery 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
Provider Details
| NPI | 1811550742 |
|---|---|
| Specialty | Surgery Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 04/16/2019 |
Hospital and facility affiliations
Facilities where Isabella Guajardo Sant, MD 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.
Ozark Surgical Group
Salem, AR
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Isabella Guajardo Sant, MD. Source: openpaymentsdata.cms.gov.
Total received
$14
Largest payer
Integra LifeSciences Corporation
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
103
Total Claims
$8K
Total Drug Cost
54
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 123.833
- Total Day Supply
- 2,023
- Generic Drug Cost
- $2K
- Opioid Claims
- 33 (32.0% rate)
- Antibiotic Claims
- 31
Patient Demographics
- Average Patient Age
- 69.9 years
- Avg HCC Risk Score
- 2.16
- Gender Split
- 61% female / 39% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 16 |
| Oxycodone Hcl | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgery Physician Overview
How Isabella Guajardo Sant, MD fits within the Surgery Physician landscape nationally.
36,778
Surgery Physician Providers in US
56
States with Surgery Physician
174
Avg Claims per Provider
Isabella Guajardo Sant, MD's 103 claims are below the specialty average of 174.
Nationwide Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Guajardo Sant, both outside Arkansas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2019)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Surgery Physician Providers in Arkansas
Other clinicians with the same primary specialty enrolled in Arkansas, drawn from the same CMS NPPES roster as Guajardo Sant.
One of 293 Surgery Physician providers enrolled in Arkansas, 5 are shown here.
Dr. Dana Abraham
M.D.
Little Rock, AR
Dr. Sahibzada Ahmed
M.D.
Booneville, AR
Dr. Nabil Akkad
MD
Fort Smith, AR
Dr. William Alexander
MD
Batesville, AR
Dr. Robert Alleman
M.D.
Paragould, AR
Compare Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Isabella Guajardo Sant, MD's specialty? ▼
Isabella Guajardo Sant, MD specializes in Surgery Physician and practices in Mountain Home, Arkansas. Credentials: MD.
How much does Isabella Guajardo Sant, MD prescribe under Medicare Part D? ▼
In 2024, Isabella Guajardo Sant, MD wrote 103 Medicare Part D claims totaling $8K in drug costs for 54 beneficiaries.
Where is Isabella Guajardo Sant, MD located? ▼
Isabella Guajardo Sant, MD is located at 901 BURNETT DR, Mountain Home, AR, 72653. Phone: (912) 087-0421.
What is Isabella Guajardo Sant, MD's NPI number? ▼
Isabella Guajardo Sant, MD's National Provider Identifier (NPI) is 1811550742, issued on 04/16/2019.
Does Isabella Guajardo Sant, MD prescribe opioids? ▼
Yes, Isabella Guajardo Sant, MD had 33 opioid claims in 2024 with an opioid prescribing rate of 32.0%.
How many Surgery Physician providers are there in the US? ▼
There are 36,778 Surgery Physician providers across 56 states in the US. The average Surgery Physician provider writes 174 Medicare Part D claims per year.
What drugs does Isabella Guajardo Sant, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Isabella Guajardo Sant, MD's most frequently prescribed drugs include Oxycodone-Acetaminophen, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Isabella Guajardo Sant, MD accept Medicare? ▼
Isabella Guajardo Sant, MD appears in CMS Medicare data with 103 Part D claims and 54 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Isabella Guajardo Sant, MD's credentials? ▼
Isabella Guajardo Sant, MD's NPI is 1811550742 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
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 August 2026.