Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. John P Caster , MD

Internal Medicine โ€ข Springfield, MO

Active NPI 1902849854 Individual Practitioner Male Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

1001 E Primrose St
Springfield, MO 658075155

Call 4178753000 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

1001 E Primrose St

Springfield, MO 658075155

Telephone 4178753000
Fax 4178753096
Organization at the Same NPPES Address or Phone
Ferrell Duncan Clinic, Inc Facility NPI 1326099383

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Lester E Cox Medical Centers. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Saint Louis University School Of Medicine

Graduation Year

1995

Medicare patients

344 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider, 2024.

Medicare-allowed amount

About $168,899 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.

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 $137,088 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

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

22,848 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

$798,523 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

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: $1,105.23 across 67 records.

By nature of payment

  • Food and Beverage: $1,105.23 across 67 records.

Reporting-company totals (3 largest of 9)

  • Abbott Laboratories: $216.33 across 9 records.
  • AstraZeneca Pharmaceuticals LP: $168.41 across 11 records.
  • Novo Nordisk Inc: $161.01 across 10 records.

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.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

31 years (graduated 1995)

CMS Doctors and Clinicians data list 1995 as the year this clinician finished professional 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.

NPI first issued

2006

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.

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; Medicare.gov, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Caster 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.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Caster as eligible to order or refer durable medical equipment (DME) for people with Medicare.

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.

Guide: What ordering and referring status means

Compared with the same specialty in Springfield and Missouri

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Springfield, MO (2024, 88 clinicians with data). Median for this group: 770. Middle half: 517 to 1,570.

More Medicare Part B services than 95% of clinicians listed under Internal Medicine in Missouri (2024, 1,304 clinicians with data). Median for this group: 636. Middle half: 273 to 1,166.

Medicare-allowed amount

A higher Medicare-allowed amount than 85% of clinicians listed under Internal Medicine in Springfield, MO (2024, 88 clinicians with data). Median for this group: $72,715. Middle half: $45,214 to $117,125.

A higher Medicare-allowed amount than 90% of clinicians listed under Internal Medicine in Missouri (2024, 1,304 clinicians with data). Median for this group: $58,496. Middle half: $24,542 to $99,993.

Paid by Medicare

A higher Medicare payment amount than 90% of clinicians listed under Internal Medicine in Springfield, MO (2024, 88 clinicians with data). Median for this group: $56,145. Middle half: $34,918 to $89,759.

A higher Medicare payment amount than 90% of clinicians listed under Internal Medicine in Missouri (2024, 1,304 clinicians with data). Median for this group: $44,917. Middle half: $18,290 to $76,772.

Medicare Part D prescriptions

More Part D prescriptions than 75% of clinicians listed under Internal Medicine in Springfield, MO (2024, 96 clinicians with data). Median for this group: 326. Middle half: 97 to 9,546.

More Part D prescriptions than 80% of clinicians listed under Internal Medicine in Missouri (2024, 1,535 clinicians with data). Median for this group: 771. Middle half: 122 to 7,845.

Part D drug cost

A higher Part D drug cost than 70% of clinicians listed under Internal Medicine in Springfield, MO (2024, 96 clinicians with data). Median for this group: $25,510. Middle half: $1,571 to $799,440.

A higher Part D drug cost than 80% of clinicians listed under Internal Medicine in Missouri (2024, 1,535 clinicians with data). Median for this group: $59,863. Middle half: $2,451 to $575,890.

135 active clinicians are listed under Internal Medicine with a practice address in Springfield, MO (2,605 in Missouri).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Springfield

13.3% of these 135 clinicians have the CMS telehealth indicator.

69.6% of these 135 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, 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

Open Payments ยท Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 โ€“ December 31, 2025): 67 records totaling $1,105.23.

Manufacturer Payment Nature Product Type Amount ($)
Dexcom, Inc.
Food and Beverage
In-kind items and services
Dexcom G6 Transmitter General $26.24
Dexcom, Inc.
Food and Beverage
In-kind items and services
Dexcom G6 Transmitter General $25.23
Abbott Laboratories
Food and Beverage
In-kind items and services
FREESTYLE LIBRE General $24.89
Abbott Laboratories
Food and Beverage
In-kind items and services
FREESTYLE LIBRE General $24.64
Abbott Laboratories
Food and Beverage
In-kind items and services
FREESTYLE LIBRE General $24.63
Abbott Laboratories
Food and Beverage
In-kind items and services
FREESTYLE LIBRE General $24.47
Abbott Laboratories
Food and Beverage
In-kind items and services
FREESTYLE LIBRE General $24.39
Abbott Laboratories
Food and Beverage
In-kind items and services
FREESTYLE LIBRE General $24.39
Abbott Laboratories
Food and Beverage
In-kind items and services
FREESTYLE LIBRE General $24.39
Abbott Laboratories
Food and Beverage
In-kind items and services
FREESTYLE LIBRE General $24.25
Inspire Medical Systems, Inc.
Food and Beverage
In-kind items and services
INSPIRE General $24.14
Dexcom, Inc.
Food and Beverage
In-kind items and services
Dexcom G6 Transmitter General $23.59
Dexcom, Inc.
Food and Beverage
In-kind items and services
Dexcom G6 Transmitter General $23.58
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
โ€” General $23.09
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
BREZTRI General $21.82
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
FABRAZYME General $21.33
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
FABRAZYME General $20.97
Abbott Laboratories
Food and Beverage
In-kind items and services
FREESTYLE LIBRE General $20.28
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $18.74
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $18.71
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $18.64
Dexcom, Inc.
Food and Beverage
In-kind items and services
Dexcom G6 Transmitter General $18.01
Eli Lilly and Company
Food and Beverage
In-kind items and services
KISUNLA General $17.74
Novo Nordisk Inc
Food and Beverage
In-kind items and services
Ozempic General $17.67
GlaxoSmithKline, LLC.
Food and Beverage
In-kind items and services
AREXVY General $17.34

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B ยท Data Year 2024
Reporting Year:

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ€“2023 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, 2017โ€“2024; 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
622 303 $299.07 $117.72
36415 Insertion of needle into vein for collection of blood sample
568 314 $14.40 $8.65
80053 Blood test, comprehensive group of blood chemicals
519 312 $52.61 $10.34
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
486 303 $38.71 $7.60
80061 Blood test, lipids (cholesterol and triglycerides)
408 289 $66.93 $13.10
81001 Manual urinalysis test with examination using microscope, automated
400 283 $15.91 $3.11
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
287 287 $270.00 $119.36
83036 Hemoglobin a1c level
266 188 $48.45 $9.52
84443 Blood test, thyroid stimulating hormone (tsh)
216 166 $83.57 $16.42
84439 Thyroxine (thyroid chemical), free
162 120 $44.96 $8.81
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
116 94 $196.66 $81.58
82043 Urine microalbumin (protein) level
85 63 $28.70 $5.66
82570 Creatinine level to test for kidney function or muscle injury
85 63 $25.84 $5.08
82306 Vitamin d-3 level
77 64 $147.95 $29.01
82607 Cyanocobalamin (vitamin b-12) level
73 61 $75.25 $14.78
G0103 Prostate cancer screening; prostate specific antigen test (psa)
73 73 $91.72 $18.92
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
73 67 $52.80 $15.43
G0008 Administration of influenza virus vaccine
68 68 $40.34 $29.84
90653 Influenza vaccine, inactivated
64 64 $56.52 $55.39
84153 Psa (prostate specific antigen) measurement, total
30 28 $91.57 $18.02
84550 Uric acid level, blood
24 17 $22.53 $4.43
71046 X-ray of chest, 2 views
23 22 $65.43 $19.80
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
17 17 $683.76 $286.13
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
16 16 $68.24 $12.46
G0009 Administration of pneumococcal vaccine
16 16 $40.03 $29.84

(top 25 shown)

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.

CMS Part D ยท Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 591 45,720 $3,747.17 154
Amlodipine Besylate Amlodipine Besylate 524 39,028 $2,570.95 135
Levothyroxine Sodium Levothyroxine Sodium 495 33,101 $4,043.71 99
Lisinopril Lisinopril 487 40,076 $2,626.05 128
Omeprazole Omeprazole 365 27,349 $4,094.26 92
Gabapentin Gabapentin 336 16,376 $4,763.88 78
Losartan Potassium Losartan Potassium 267 20,295 $1,786.66 70
Trazodone Hcl Trazodone Hcl 245 13,020 $1,508.38 54
Metoprolol Succinate Metoprolol Succinate 233 18,596 $2,824.51 64
Simvastatin Simvastatin 227 16,934 $1,799.08 53
Hydrochlorothiazide Hydrochlorothiazide 210 17,206 $1,016.35 58
Rosuvastatin Calcium Rosuvastatin Calcium 210 16,948 $1,665.83 57
Eliquis Apixaban 202 8,443 $165,435.13 36
Sertraline Hcl Sertraline Hcl 188 11,653 $1,131.69 43
Metformin Hcl Er Metformin Hcl 179 12,501 $1,524.18 45
Carvedilol Carvedilol 175 12,186 $1,184.05 43
Tamsulosin Hcl Tamsulosin Hcl 168 10,920 $1,378.72 47
Tizanidine Hcl Tizanidine Hcl 168 5,679 $1,837.73 41
Potassium Chloride Potassium Chloride 166 9,847 $3,063.99 39
Duloxetine Hcl Duloxetine Hcl 164 10,274 $4,506.93 38
Metformin Hcl Metformin Hcl 159 11,842 $1,365.90 43
Allopurinol Allopurinol 140 10,313 $1,150.67 30
Fluticasone Propionate Fluticasone Propionate 135 7,550 $2,632.06 35
Alendronate Sodium Alendronate Sodium 131 7,512 $1,000.20 30
Pantoprazole Sodium Pantoprazole Sodium 129 9,320 $1,506.35 35

(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

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES MO 108915

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Missouri Board of Registration for the Healing Arts.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
209813815 (MO)
Other Identifier Blue Cross/blue Shield
113972

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20050822000031

Enrollment State Jurisdiction

MO

PECOS Control ID

8820028632

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Not Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Not Eligible
Power Mobility Devices (PMD) Eligible

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

Lester E Cox Medical Centers

1001 E Primrose, Springfield, MO 658075155

Phone: 4178753000

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

40 listed
Dr. Michael Albritton , MD

Radiology - Radiation Oncology

NPI 1548264971

Doctor of Medicine (M.D.)

Dr. Mark Anderson , MD

Internal Medicine - Interventional Cardiology

NPI 1073557922

Doctor of Medicine (M.D.)

NPI 1366814634

Doctor of Medicine (M.D.)

Dr. Hafiza Sobia Arshad , MD

Internal Medicine - Pulmonary Disease

NPI 1053667980

Doctor of Medicine (M.D.)

Brittany Bain , FNP-BC

Nurse Practitioner

NPI 1073182507

Family Nurse Practitioner (Board Certified)

Dr. Gigi Baker , MD

Internal Medicine

NPI 1184666117

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

11 Historical Events
โœ…
NPI Profile Active March 02, 2017

NPI status registered as active in NPPES database

๐Ÿ“
Updated Practice Location March 02, 2017

Registered at 1001 E PRIMROSE ST, SPRINGFIELD, MO 658075155 (Tel: 4178753000)

๐Ÿ“
Updated Business Mailing Address March 02, 2017

Registered at PO BOX 9007, SPRINGFIELD, MO 658089007 (Tel: 4178753000)

๐Ÿ‘ค
Provider Name / Credentials Updated March 02, 2017

Recorded as JOHN CASTER, MD

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) March 02, 2017

Internal Medicine (license number reported to NPPES: MO 108915)

โœ…
NPI Profile Active July 03, 2012

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) July 03, 2012

Registered at 1001 E PRIMROSE ST, SPRINGFIELD, MO 658075155 (Tel: 4178753000)

๐Ÿ“
Business Mailing Address (Initial Record) July 03, 2012

Registered at PO BOX 9007, SPRINGFIELD, MO 658089007 (Tel: 4178753000)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) July 03, 2012

Recorded as JOHN CASTER, MD

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) July 03, 2012

Internal Medicine (license number reported to NPPES: MO 108915)

๐ŸŸข
Initial NPI Registration & Enumeration June 14, 2006

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1902849854
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 14, 2006
Last Update: March 02, 2017
Sole Proprietor: No

Other Internal Medicine Providers in Springfield

All Internal Medicine Providers in Springfield

Mailing Address

Po Box 9007

Springfield, MO 658089007

Phone: 4178753000

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.