Reginald Lafate Spears, M.D.
Internal Medicine Physician · Long Grove, IL
Reginald Lafate Spears, M.D. is an internal medicine physician with a practice address in Long Grove, Illinois, and NPI 1861485153, issued on Aug 23, 2005. Check the license (Illinois 036-091992, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Reginald Lafate Spears
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-091992 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4160 Route 83, Long Grove, IL 60047
- Phone
- (847) 415-2127
- Enumerated
- Aug 23, 2005
- Record last updated
- Dec 9, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20031209000504); accepts Medicare assignment
- Medical or professional school
- Southern Illinois University School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 4160 Route 83
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Reginald Lafate Spears 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 036-091992Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% more Medicare Part D claims than the average internal medicine physician in 2024
4,841 Medicare Part D claims for 291 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. 54 claims were for opioids.
Most prescribed
- Atorvastatin Calcium341 claims
- Amlodipine Besylate333 claims
- Levothyroxine Sodium165 claims
- Carvedilol162 claims
- Rosuvastatin Calcium151 claims
- Lisinopril140 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.
Reginald Lafate Spears among 7,238 internal medicine physician records in Illinois
Reginald Lafate Spears, 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
- Graduated1993 · median 2003 among the 3,580 with a school on file
- Record last updated2009 · 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).
43 internal medicine physician records list a practice address in Long Grove
They are 43 of the 190 NPPES records with a practice address in Long Grove, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Long Grove → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nancy Awadallah, M.D.Long Grove, IL 600471952337172
- Marek Filipiuk, M.D.Long Grove, IL 600471013981778
- Lisa Gulcher, M.D.Lake Zurich, IL 600471992728885
- Khola Hai, MDLong Grove, IL 600471275544009
- Vishnu Jindal, M.D.Long Grove, IL 600471851344766
- David Kanarek, M.D.Long Grove, IL 600471437189842
- Rajeev Kapoor, M.D., M.P.HLake Zurich, IL 600471760445654
- Jeffry Kreamer, D.O.Long Grove, IL 600471225084916
Common questions
What is Reginald Lafate Spears, M.D.'s NPI number?
Reginald Lafate Spears, M.D.'s National Provider Identifier (NPI) is 1861485153, issued on Aug 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Reginald Lafate Spears, M.D. located?
The NPPES record lists a practice address at 4160 Route 83, Long Grove, IL, 60047. Phone: (847) 415-2127. Providers update this record themselves, so call before visiting.
How can I verify Reginald Lafate Spears, M.D.'s license?
NPPES lists Illinois license number 036-091992, 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 Reginald Lafate Spears, M.D. prescribe under Medicare Part D?
In 2024, Reginald Lafate Spears, M.D. had 4,841 Medicare Part D claims for 291 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.