Joseph S. Grasso, D.O.
Family Medicine Physician · South Barrington, IL
Joseph S. Grasso, D.O. is a family medicine physician with a practice address in South Barrington, Illinois, and NPI 1548383805, issued on Apr 9, 2007. Check the license (Illinois 036-108340, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Joseph S. Grasso
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 036-108340 IL
10618 NH
Self-reported in NPPES; status is on the state search - Practice location
- 33 West Higgins Road, South Barrington, IL 60010
- Phone
- (847) 426-9000
- Enumerated
- Apr 9, 2007
- Record last updated
- May 5, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (847) 426-9050
- Medicare enrollment
- Enrolled (PECOS I20081107000795); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 33 West Higgins Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph S. Grasso 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 036-108340Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
29 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Joseph S. Grasso among 6,215 family medicine physician records in Illinois
Joseph S. Grasso, D.O. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 50% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1991 · median 2006 among the 3,714 with a school on file
- Record last updated2010 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 family medicine physician records list a practice address in South Barrington
They are 3 of the 110 NPPES records with a practice address in South Barrington, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in South Barrington → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Nader Aziz, M.D.Lake Barrington, IL 600101396829727
- Orazio Bartolomeo, MDBarrington, IL 600101558368803
- Brenda Brak, MDBarrington, IL 600101215925193
- Jeanene Caccopola, D.O.Barrington, IL 600101093704439
- Lisa Derken, MDBarrington, IL 600101336137207
- Ahmed Farrag, MDBarrington, IL 600101255547220
- Celeste Galizia, DOSouth Barrington, IL 600101508850819
- Reinhold Llerena, MDBarrington, IL 600101053349720
Common questions
What is Joseph S. Grasso, D.O.'s NPI number?
Joseph S. Grasso, D.O.'s National Provider Identifier (NPI) is 1548383805, issued on Apr 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joseph S. Grasso, D.O. located?
The NPPES record lists a practice address at 33 West Higgins Road, South Barrington, IL, 60010. Phone: (847) 426-9000. Providers update this record themselves, so call before visiting.
How can I verify Joseph S. Grasso, D.O.'s license?
NPPES lists Illinois license number 036-108340, 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 Joseph S. Grasso, D.O. prescribe under Medicare Part D?
In 2024, Joseph S. Grasso, D.O. had 29 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.