Richard Do Nguyen, M.D.
Internal Medicine Physician · Mattoon, IL
Richard Do Nguyen, M.D. is an internal medicine physician with a practice address in Mattoon, Illinois, and NPI 1053793174, issued on Jun 25, 2015. Check the license (Illinois 036.147563, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Richard Do Nguyen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 036.147563 IL
036-147563 IL
4301108106 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Health Center Dr, Mattoon, IL 61938
- Phone
- (217) 235-4325
- Enumerated
- Jun 25, 2015
- Record last updated
- Oct 25, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (217) 238-4290
- Medicare enrollment
- Enrolled (PECOS I20181115000892); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1000 Health Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arnold Agapito, MDInternal Medicine Physician1467421677
- Aziz Ahmed, MDDiagnostic Radiology Physician1790976918
- Erika AitkenCertified Registered Nurse Anesthetist1568159127
- Mohammad Al-Akchar, MDCardiovascular Disease Physician1730561903
- Babatunde Alao, M.D.Hospitalist Physician1477714053
- Maria Althoff, CRNACertified Registered Nurse Anesthetist1922393305
Verify Richard Do Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.147563Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average internal medicine physician in 2024
273 Medicare Part D claims for 101 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 20 claims were for opioids.
Most prescribed
- Prednisone17 claims
- Doxycycline Hyclate14 claims
- Pantoprazole Sodium14 claims
- Amlodipine Besylate13 claims
- Eliquis13 claims
- Levofloxacin12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 91.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $51.41
3 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Sarah Bush Lincoln Health CenterMattoon, IL · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
22 internal medicine physician records list a practice address in Mattoon
They are 22 of the 803 NPPES records with a practice address in Mattoon, and 7,238 internal medicine physician records in Illinois.
All 22 in Mattoon → All 7,238 in Illinois → Every provider in Mattoon →
Other internal medicine physician records in Illinois
- Peter Abadeer, D.O.Bloomington, IL1760469522
- Motaz Abas, MDPeoria, IL1215510201
- Elias Abate, M.D.Chicago, IL1336712199
- Maliha Abbas, D.O.Chicago, IL1174963920
- Zareena Abbas, MDChicago, IL1427078872
- Abu Abbasi, MDChicago, IL1083243877
- Ayesha Abbasi, MDChicago, IL1376216705
- Khalda Abbasi, MDNaperville, IL1487705240
- Elmer Abbo, MDBurr Ridge, IL1710048541
- Paul Abbo, M.D.River Forest, IL1083693378
Common questions
What is Richard Do Nguyen, M.D.'s NPI number?
Richard Do Nguyen, M.D.'s National Provider Identifier (NPI) is 1053793174, issued on Jun 25, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Richard Do Nguyen, M.D. located?
The NPPES record lists a practice address at 1000 Health Center Dr, Mattoon, IL, 61938. Phone: (217) 235-4325. Providers update this record themselves, so call before visiting.
How can I verify Richard Do Nguyen, M.D.'s license?
NPPES lists Illinois license number 036.147563, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Richard Do Nguyen, M.D. prescribe under Medicare Part D?
In 2024, Richard Do Nguyen, M.D. had 273 Medicare Part D claims for 101 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Richard Do Nguyen, M.D.'s MIPS final score?
The 2023 MIPS final score is 91.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.