2026 NPPES data Hospitalist Physician NPI 1891358529 MD
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ASHLEY GUTIERREZ SANTANA, MD

Hospitalist Physician in KNOXVILLE, Tennessee. 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
640
Medicare Part D claims · 49 beneficiaries · Hospitalist Physician avg: 888
Industry payments
$197.38
8 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ASHLEY GUTIERREZ SANTANA, MD is a Hospitalist Physician ([object Object]) practicing in KNOXVILLE, Tennessee with a Medicare Part D prescribing footprint of 640 claims across 49 beneficiaries . Industry payments of $197.38 across 8 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ASHLEY GUTIERREZ SANTANA, MD filed 640 Medicare Part D claims in 2023 across KNOXVILLE, Tennessee. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ASHLEY GUTIERREZ SANTANA, 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).

ASHLEY GUTIERREZ SANTANA, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/18/2019

NPI 1891358529

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

640 28% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in Tennessee

How Hospitalist Physician compares to other specialties among Tennessee providers

Tennessee providers

Hospitalist Physician share within Tennessee

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within Tennessee

Specialty board-certification context

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

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

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

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

ASHLEY GUTIERREZ SANTANA, MD is a Hospitalist Physician provider practicing in KNOXVILLE, Tennessee, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1891358529. 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.

ASHLEY GUTIERREZ SANTANA, MD appears in the CMS NPPES registry as a Hospitalist Physician provider holding MD credentials at 1924 ALCOA HIGHWAY, U-114, KNOXVILLE, TN, 37920, with a listed phone of (865) 305-9340. NPI 1891358529 was issued on 04/18/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GUTIERREZ SANTANA 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 640 prescription claims written by this provider, covering 49 Medicare beneficiaries and totaling roughly $81K 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.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

1924 ALCOA HIGHWAY, U-114
KNOXVILLE, TN 37920

Provider Details

NPI 1891358529
Specialty Hospitalist Physician
Credentials MD
Gender Female
NPI Issued 04/18/2019

Hospital and facility affiliations

Facilities where ASHLEY GUTIERREZ SANTANA, 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.

UNIVERSITY HEALTH SYSTEM, INC.
KNOXVILLE, TN

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 ASHLEY GUTIERREZ SANTANA, MD. Source: openpaymentsdata.cms.gov.

Total received

$197

Largest payer

Janssen Pharmaceuticals, Inc

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 2023.

640
Total Claims
$81K
Total Drug Cost
49
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,065
Total Day Supply
31,045
Generic Drug Cost
$8K
Antibiotic Claims
11

Patient Demographics

Average Patient Age
69.5 years
Avg HCC Risk Score
2.75
Gender Split
55% female / 45% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
41
Amlodipine Besylate
40
Levothyroxine Sodium
34
Albuterol Sulfate Hfa
Albuterol Sulfate
30
Losartan Potassium
27
Gabapentin
25
Rosuvastatin Calcium
22
Omeprazole
21
Carvedilol
20
Metformin Hcl Er
Metformin Hcl
20

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

Hospitalist Physician Overview

How ASHLEY GUTIERREZ SANTANA, MD fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

ASHLEY GUTIERREZ SANTANA, MD's 640 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in Tennessee

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

Compare Hospitalist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ASHLEY GUTIERREZ SANTANA, MD's specialty?
ASHLEY GUTIERREZ SANTANA, MD specializes in Hospitalist Physician and practices in KNOXVILLE, Tennessee. Credentials: MD.
How much does ASHLEY GUTIERREZ SANTANA, MD prescribe under Medicare Part D?
In 2023, ASHLEY GUTIERREZ SANTANA, MD wrote 640 Medicare Part D claims totaling $81K in drug costs for 49 beneficiaries.
Where is ASHLEY GUTIERREZ SANTANA, MD located?
ASHLEY GUTIERREZ SANTANA, MD is located at 1924 ALCOA HIGHWAY, U-114, KNOXVILLE, TN, 37920. Phone: (865) 305-9340.
What is ASHLEY GUTIERREZ SANTANA, MD's NPI number?
ASHLEY GUTIERREZ SANTANA, MD's National Provider Identifier (NPI) is 1891358529, issued on 04/18/2019.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does ASHLEY GUTIERREZ SANTANA, MD prescribe most often?
Based on 2023 Medicare Part D data, ASHLEY GUTIERREZ SANTANA, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ASHLEY GUTIERREZ SANTANA, MD accept Medicare?
ASHLEY GUTIERREZ SANTANA, MD appears in CMS Medicare data with 640 Part D claims and 49 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ASHLEY GUTIERREZ SANTANA, MD's credentials?
ASHLEY GUTIERREZ SANTANA, MD's NPI is 1891358529 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