Dr. Preston B Howerton , DO
Internal Medicine โข Marshall, MO
2305 South 65 Highway
Marshall, MO 653403702
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Preston Howerton is listed in NPPES under Internal Medicine.
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NPI assigned on September 20, 2005; this date does not establish years in practice.
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Published CMS data list 45 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99308 โ Subsequent nursing facility care with straightforward level of medical decision making, per day: 25 service units.
- 99309 โ Subsequent nursing facility care with moderate level of medical decision making, per day: 20 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 2,109 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Lisinopril โ 113 prescription fills, including refills.
- Amlodipine Besylate โ 113 prescription fills, including refills.
- Metformin Hcl โ 112 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 68 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 95% of clinicians listed under Internal Medicine in Missouri (2024, 1,294 clinicians with data). Median for this group: 637. Middle half: 275 to 1,158.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 323 in 2020 to 45 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
2305 South 65 Highway
Marshall, MO 653403702
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: John Fitzgibbon Memorial Hospital Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2004
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
50 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $3,233 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $2,448 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
30-day fills
4,183 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$162,093 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $60.09 across 2 records.
By nature of payment
- Food and Beverage: $60.09 across 2 records.
Reporting-company totals
- Titan Surgical Group, LLC: $42.50 across 1 record.
- Exact Sciences Corporation: $17.59 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
22 years (graduated 2004)
CMS Doctors and Clinicians data list 2004 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Howerton has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Howerton as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Marshall and Missouri
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 95% of clinicians listed under Internal Medicine in Missouri (2024, 1,294 clinicians with data). Median for this group: 637. Middle half: 275 to 1,158.
Too few clinicians listed under Internal Medicine in Marshall have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
A lower Medicare-allowed amount than 95% of clinicians listed under Internal Medicine in Missouri (2024, 1,294 clinicians with data). Median for this group: $58,536. Middle half: $24,607 to $99,608.
Too few clinicians listed under Internal Medicine in Marshall have Medicare Part B data for 2024 to compare.
Paid by Medicare
A lower Medicare payment amount than 95% of clinicians listed under Internal Medicine in Missouri (2024, 1,294 clinicians with data). Median for this group: $44,917. Middle half: $18,506 to $76,405.
Too few clinicians listed under Internal Medicine in Marshall have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Internal Medicine in Missouri (2024, 1,528 clinicians with data). Median for this group: 770. Middle half: 122 to 7,867.
Too few clinicians listed under Internal Medicine in Marshall have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Internal Medicine in Missouri (2024, 1,528 clinicians with data). Median for this group: $59,831. Middle half: $2,284 to $576,450.
Too few clinicians listed under Internal Medicine in Marshall have Medicare Part D data for 2024 to compare.
5 active clinicians are listed under Internal Medicine with a practice address in Marshall, MO (2,588 in Missouri).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 86% from 323 in 2020 to 45 in 2024.
- 2020: 323
- 2021: 250
- 2022: 13
- 2023: 11
- 2024: 45
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Medicare-allowed amount
Medicare-allowed amount decreased 90% from $33,490 in 2020 to $3,233 in 2024.
- 2020: $33,490
- 2021: $26,063
- 2022: $2,205
- 2023: $759
- 2024: $3,233
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Paid by Medicare
Paid by Medicare decreased 91% from $27,626 in 2020 to $2,448 in 2024.
- 2020: $27,626
- 2021: $21,128
- 2022: $2,205
- 2023: $493
- 2024: $2,448
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Medicare Part D prescriptions
Medicare Part D prescriptions varied from year to year: 1,939 in 2020 and 2,109 in 2024.
- 2020: 1,939
- 2021: 3,445
- 2022: 4,146
- 2023: 2,435
- 2024: 2,109
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30-day fills
30-day fills increased 95% from 2,143 in 2020 to 4,183 in 2024.
- 2020: 2,143
- 2021: 3,931
- 2022: 5,770
- 2023: 4,353
- 2024: 4,183
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Part D drug cost
Part D drug cost increased 69% from $95,702 in 2020 to $162,093 in 2024.
- 2020: $95,702
- 2021: $174,075
- 2022: $291,082
- 2023: $166,573
- 2024: $162,093
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $14.92 in 2021 to $60.09 in 2025.
- 2021: $14.92
- 2023: $59.42
- 2024: $13.80
- 2025: $60.09
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $60.09.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Titan Surgical Group, LLC |
Food and Beverage
In-kind items and services
|
โ | General | $42.50 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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Cologuard Collection Kit | General | $17.59 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99308
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more
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25 | 13 | $63.98 | $62.96 |
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99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
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20 | 20 | $84.18 | $82.96 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Lisinopril | Lisinopril | 113 | 7,522 | $628.75 | 30 |
| Amlodipine Besylate | Amlodipine Besylate | 113 | 8,310 | $508.55 | 28 |
| Metformin Hcl | Metformin Hcl | 112 | 8,380 | $661.73 | 29 |
| Atorvastatin Calcium | Atorvastatin Calcium | 109 | 7,706 | $916.67 | 32 |
| Simvastatin | Simvastatin | 98 | 5,940 | $488.92 | 24 |
| Levothyroxine Sodium | Levothyroxine Sodium | 79 | 6,217 | $601.63 | 25 |
| Losartan Potassium | Losartan Potassium | 75 | 5,640 | $354.14 | 20 |
| Gabapentin | Gabapentin | 62 | 3,383 | $1,171.62 | 18 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 58 | 2,338 | $1,535.78 | 19 |
| Carvedilol | Carvedilol | 51 | 3,744 | $377.36 | 15 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 49 | 3,760 | $472.97 | 13 |
| Potassium Chloride | Potassium Chloride | 47 | 2,552 | $702.66 | 14 |
| Tamsulosin Hcl | Tamsulosin Hcl | 44 | 2,580 | $421.70 | 12 |
| Omeprazole | Omeprazole | 42 | 2,917 | $868.75 | 11 |
| Furosemide | Furosemide | 41 | 1,758 | $193.88 | 13 |
| Metoprolol Succinate | Metoprolol Succinate | 41 | 3,067 | $357.37 | 14 |
| Hydrochlorothiazide | Hydrochlorothiazide | 40 | 2,343 | $101.57 | 14 |
| Fluoxetine Hcl | Fluoxetine Hcl | 39 | 1,087 | $844.69 | โ |
| Sertraline Hcl | Sertraline Hcl | 35 | 2,280 | $237.68 | โ |
| Dextroamphetamine-Amphetamine | Dextroamphetamine/Amphetamine | 35 | 1,050 | $1,420.28 | โ |
| Pantoprazole Sodium | Pantoprazole Sodium | 33 | 2,366 | $519.60 | โ |
| Metoprolol Tartrate | Metoprolol Tartrate | 30 | 1,376 | $165.19 | โ |
| Trazodone Hcl | Trazodone Hcl | 30 | 1,860 | $137.04 | โ |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 28 | 2,400 | $136.26 | โ |
| Tizanidine Hcl | Tizanidine Hcl | 26 | 705 | $241.23 | โ |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2024-03-05NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
NUCC Taxonomy Code: 2083A0100X
Aerospace medicine focuses on the clinical care, research, and operational support of the health, safety, and performance of crewmembers and passengers of air and space vehicles, together with the support personnel who assist operation of such vehicles. This population often works and lives in remote, isolated, extreme, or enclosed environments under conditions of physical and psychological stress. Practitioners strive for an optimal human-machine match in occupational settings rich with environmental hazards and engineering countermeasures.
NUCC Taxonomy Code: 207P00000X
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - EMERGENCY MEDICINE
I20070530000385
MO
6406954395
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
John Fitzgibbon Memorial Hospital Inc
2305 S Hwy 65, Marshall, MO 653403702
Phone: 6608313730
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Clinical Nurse Specialist - Adult Health
Registered Nurse, Master of Science in Nursing, ACNSBC
Emergency Medicine
Doctor of Medicine (M.D.)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Nurse Practitioner - Family
Family Nurse Practitioner
Emergency Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Preventive Medicine (license number reported to NPPES: MO 2005029307)
NPI status registered as active in NPPES database
Registered at 2305 SOUTH 65 HIGHWAY, MARSHALL, MO 653403702 (Tel: 6608867431)
Registered at 2305 SOUTH 65 HIGHWAY, MARSHALL, MO 653403702 (Tel: 6608867431)
Recorded as PRESTON HOWERTON, DO
Emergency Medicine (license number reported to NPPES: MO 2005029307)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Marshall
More public profiles in Missouri
Directory navigation, in NPI number order.
- Leann Mclaughlin, DNP Nurse Practitioner - Family ยท Columbia
- Teresa Ficken, APRN, FNP-BC Nurse Practitioner ยท Sedalia
- Todd Brueckner, DDS Dentist - General Practice ยท Joplin
- Aubrie Evans, DDS Dentist - General Practice ยท Marshall
- Johnathan Miller, MD General Practice ยท Saint Louis
- Scott Wilson-Flewelling, MD Radiology - Diagnostic Radiology ยท Saint Louis
- Brittany Witt, PT, DPT Physical Therapist ยท Independence
- Jeffrey Hackworth, DO Internal Medicine ยท Kirksville
- Jeanine Weinkauf, AGNP Nurse Practitioner - Adult Health ยท Saint Louis
- Mehdia Amini, MD Internal Medicine ยท Saint Louis
- Chelsea Garnett, CRNA Nurse Anesthetist, Certified Registered ยท North Kansas City
- Spencer Ng, MD PHD Dermatology ยท Saint Louis
Mailing Address
2305 South 65 Highway
Marshall, MO 653403702
Phone: 6608867431