Dr. William R Yu , MD
Internal Medicine • Springfield, IL
2901 Old Jacksonville Rd
Springfield, IL 627047437
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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NPI assigned on October 10, 2006; this date does not establish years in practice.
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Published CMS data list 949 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 99214 — Established patient outpatient office visit: 342 service units.
- 36415 — Insertion of needle into vein for collection of blood sample: 329 service units.
- 99213 — Established patient outpatient office visit: 130 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2021 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2022). CPT notice
See all 10 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 52 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Myrbetriq (Mirabegron) — 52 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 85% of clinicians listed under Internal Medicine in Springfield, IL (2024, 85 clinicians with data). Median for this group: 342. Middle half: 80 to 2,561.
Fewer Part D prescriptions than 80% of clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: 1,030. Middle half: 99 to 4,658.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,380 in 2018 to 949 in 2022.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018–2022.
Practice Location & Contact Primary Location
2901 Old Jacksonville Rd
Springfield, IL 627047437
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $62,751 in 2022
The total amount Medicare approved for these services in 2022. 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 – by Provider and Service, 2022.
Paid by Medicare
About $39,582 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, 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 – by Provider and Service, 2022.
30-day fills
52 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
$6,084 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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2021
All general payments: $26.88 across 2 records.
By nature of payment
- Food and Beverage: $26.88 across 2 records.
Reporting-company totals
- Amarin Pharma Inc.: $26.88 across 2 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.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2021 (published June 30, 2026).
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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, “Does your provider accept Medicare as full payment?”
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.
Compared with the same specialty in Springfield and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 85% of clinicians listed under Internal Medicine in Springfield, IL (2024, 85 clinicians with data). Median for this group: 342. Middle half: 80 to 2,561.
Fewer Part D prescriptions than 80% of clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: 1,030. Middle half: 99 to 4,658.
Part D drug cost
A lower Part D drug cost than 60% of clinicians listed under Internal Medicine in Springfield, IL (2024, 85 clinicians with data). Median for this group: $10,337. Middle half: $678 to $312,248.
A lower Part D drug cost than 70% of clinicians listed under Internal Medicine in Illinois (2024, 3,755 clinicians with data). Median for this group: $78,716. Middle half: $2,604 to $371,507.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Yu are from 2022.
196 active clinicians are listed under Internal Medicine with a practice address in Springfield, IL (7,245 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Springfield
5.1% of these 196 clinicians have the CMS telehealth indicator.
38.8% of these 196 clinicians are listed by CMS as accepting Medicare assignment.
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 31% from 1,380 in 2018 to 949 in 2022.
- 2018: 1,380
- 2019: 833
- 2020: 1,619
- 2021: 1,217
- 2022: 949
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Medicare-allowed amount
Medicare-allowed amount decreased 14% from $72,750 in 2018 to $62,751 in 2022.
- 2018: $72,750
- 2019: $40,344
- 2020: $73,015
- 2021: $81,986
- 2022: $62,751
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Paid by Medicare
Paid by Medicare decreased 17% from $47,458 in 2018 to $39,582 in 2022.
- 2018: $47,458
- 2019: $30,063
- 2020: $49,557
- 2021: $56,403
- 2022: $39,582
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 99% from 8,473 in 2020 to 52 in 2024.
- 2020: 8,473
- 2021: 9,121
- 2022: 8,685
- 2023: 782
- 2024: 52
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30-day fills
30-day fills decreased 100% from 18,078 in 2020 to 52 in 2024.
- 2020: 18,078
- 2021: 19,994
- 2022: 19,889
- 2023: 1,956
- 2024: 52
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Part D drug cost
Part D drug cost decreased 99% from $573,251 in 2020 to $6,084 in 2024.
- 2020: $573,251
- 2021: $643,419
- 2022: $610,754
- 2023: $48,919
- 2024: $6,084
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Industry payments (Open Payments)
Industry payments (Open Payments) decreased 98% from $1,094.67 in 2019 to $26.88 in 2021.
- 2019: $1,094.67
- 2020: $1,475.31
- 2021: $26.88
Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · 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 2021 (payments made January 1 – December 31, 2021): fewer than 11 records totaling $26.88.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Amarin Pharma Inc. |
Food and Beverage
In-kind items and services
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Vascepa | General | $14.21 |
| Amarin Pharma Inc. |
Food and Beverage
In-kind items and services
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Vascepa | General | $12.67 |
Source: CMS Open Payments, program year 2021, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2021 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 – by Provider and Service data, 2017–2022; 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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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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342 | 185 | $201.00 | $125.49 |
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36415
Insertion of needle into vein for collection of blood sample
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329 | 166 | $20.00 | $2.95 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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130 | 89 | $135.00 | $89.13 |
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G0008
Administration of influenza virus vaccine
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37 | 37 | $37.00 | $28.02 |
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90662
Influenza vaccine split virus, preservative free
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35 | 35 | $51.00 | $50.04 |
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93000
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
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19 | 19 | $50.00 | $13.98 |
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96372
Injection of drug or substance under skin or into muscle
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19 | 13 | $25.00 | $13.89 |
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G0009
Administration of pneumococcal vaccine
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14 | 14 | $37.00 | $28.27 |
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99495
Transitional care management services for problem of at least moderate complexity
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13 | 12 | $315.00 | $202.87 |
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99497
Advance care planning, first 30 minutes
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11 | 11 | $148.00 | $84.07 |
Source: CMS Part B by Provider and Service, 2022; 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 |
|---|---|---|---|---|---|
| Myrbetriq | Mirabegron | 52 | 364 | $6,083.56 | — |
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: 2021-12-30NUCC 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.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner
Nurse Practitioner
Family Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner
Nurse Practitioner - Family
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 2901 OLD JACKSONVILLE RD, SPRINGFIELD, IL 627047437 (Tel: 2176989722)
NPI status registered as active in NPPES database
Registered at 1836 SOUTH MACARTHUR BLVD, SPRINGFIELD, IL 62704 (Tel: 2177891403)
Registered at 1836 SOUTH MACARTHUR BLVD, SPRINGFIELD, IL 62704 (Tel: 2177891403)
Recorded as WILLIAM YU, MD
Internal Medicine (license number reported to NPPES: IL 36061621)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Springfield
- Dr. Zachariah Gurnsey, MD
- Dr. Elizabeth Tatum, MD
- Dr. Ryan Mccarty, MD
- Dr. Nitin Saini, MD
- Dr. Praveen Kandula, MD
- Dr. Martha Hlafka, MD
More public profiles in Illinois
Directory navigation, in NPI number order.
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- Sanjana Soni, DO Family Medicine · Orland Park
- Alexandra Andes Obstetrics & Gynecology · Chicago
- Savan Shah Surgery · Chicago
- Yashika Cook-Hill, NP Nurse Practitioner - Family · Chicago
Mailing Address
1836 South Macarthur Blvd
Springfield, IL 62704
Phone: 2177891403