Oscar Mauricio Sanchez, M.D.
Internal Medicine Physician · McHenry, IL
Oscar Mauricio Sanchez, M.D. is an internal medicine physician with a practice address in McHenry, Illinois, and NPI 1164426094, issued on Jun 9, 2005. Check the license (Illinois 36095395, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Oscar Mauricio Sanchez
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 36095395 IL
036095395 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5435 Bull Valley RD, McHenry, IL 60050
- Phone
- (815) 578-0224
- Enumerated
- Jun 9, 2005
- Record last updated
- Sep 14, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (815) 578-0525
- Medicaid ID
- 036095395 IL
- Medicare enrollment
- Enrolled (PECOS I20050510000596); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 5435 Bull Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Oscar Mauricio Sanchez 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 36095395Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average internal medicine physician in 2024
3,455 Medicare Part D claims for 173 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 48 claims were for opioids.
Most prescribed
- Atorvastatin Calcium178 claims
- Gabapentin134 claims
- Amlodipine Besylate111 claims
- Alprazolam85 claims
- Losartan Potassium80 claims
- Omeprazole70 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.
Industry payments in 2024: $340.39
17 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. 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.
Oscar Mauricio Sanchez among 7,238 internal medicine physician records in Illinois
Oscar Mauricio Sanchez, M.D. is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1985 · median 2003 among the 3,580 with a school on file
- Record last updated2011 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
71 internal medicine physician records list a practice address in McHenry
They are 71 of the 1,852 NPPES records with a practice address in McHenry, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in McHenry → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Parag Amin, DOMcHenry, IL 600501639107667
- Iqbal Bhwani, MDMcHenry, IL 600501245282045
- Joseph Fojtik, MDMcHenry, IL 600501801971171
- Velislava Lozeva, DOMcHenry, IL 600501831455021
- Sanjukta Mitra, MDMcHenry, IL 600501255407805
- Deepak Mitra, MDMcHenry, IL 600501114068467
- James Mowery, M.D.McHenry, IL 600501225086143
- Parmod Narang, MDMcHenry, IL 600501023029717
Common questions
What is Oscar Mauricio Sanchez, M.D.'s NPI number?
Oscar Mauricio Sanchez, M.D.'s National Provider Identifier (NPI) is 1164426094, issued on Jun 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Oscar Mauricio Sanchez, M.D. located?
The NPPES record lists a practice address at 5435 Bull Valley RD, McHenry, IL, 60050. Phone: (815) 578-0224. Providers update this record themselves, so call before visiting.
How can I verify Oscar Mauricio Sanchez, M.D.'s license?
NPPES lists Illinois license number 36095395, 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 Oscar Mauricio Sanchez, M.D. prescribe under Medicare Part D?
In 2024, Oscar Mauricio Sanchez, M.D. had 3,455 Medicare Part D claims for 173 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.