Keith I. Block, MD
Hematology & Oncology Physician · Skokie, IL
Keith I. Block, MD is a hematology & oncology physician with a practice address in Skokie, Illinois, and NPI 1538208764, issued on Feb 5, 2007. Check the license (Illinois 036061051, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Keith I. Block
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 036061051 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5230 Old Orchard RD, Skokie, IL 60077
- Phone
- (847) 492-3040
- Enumerated
- Feb 5, 2007
- Record last updated
- Jun 29, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (847) 492-3045
- Medicare enrollment
- Enrolled (PECOS I20050820000041); accepts Medicare assignment
- Medical or professional school
- University Of Miami, Lm Miller School Of Medicine, 1979
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 666 in Illinois → Look up another NPI →
Also registered at 5230 Old Orchard RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jennifer Ellis, PAMedical Physician Assistant1255470431
- Jacqueline Glew, RDRegistered Dietitian1780723585
- Lizabeth Gold, RDRegistered Dietitian1174069397
- Brian Kamuda, APN-BCAdult Health Nurse Practitioner1720328925
- Katie O'Keefe, RDRegistered Dietitian1881062693
- Eric Sharer, MPH, RD, LDNRegistered Dietitian1710220280
Verify Keith I. Block 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 036061051Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
161 Medicare Part D claims for 33 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
Most prescribed
- Metformin Hcl41 claims
- Propranolol Hcl16 claims
- Lovastatin14 claims
- Desloratadine13 claims
- Alprazolam11 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: $865.19
39 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 8,560 providers of this specialty with any payment received $7,481.41 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.
Bills Medicare through one group practice
- North Shore Infusion LtdSkokie, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Keith I. Block among 666 hematology & oncology physician records in Illinois
Keith I. Block, MD is one of 666 hematology & oncology physician records with a practice address in Illinois. 84% 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 43% of them.
- NPI issued2007 · 43% of these records are older, 48% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1979 · median 2003 among the 461 with a school on file
- Record last updated2016 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Illinois
There are 666 hematology & oncology physician records in Illinois.
All 666 in Illinois → Every provider in Skokie → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ira Oliff, MDSkokie, IL 600771336138726
- Stacey Ban, MDSkokie, IL 600761154334159
- Sabree Abedrabo, MDPark Ridge, IL 600681790344471
- Taha Alrifai, MDPark Ridge, IL 600681023463932
- Harrah Chiang, DOPark Ridge, IL 600681467102640
- Ari Hakimian, DOPark Ridge, IL 600681447888276
- Umar Hussain, DOPark Ridge, IL 600681639756117
- Michael JacobsPark Ridge, IL 600681558854745
Common questions
What is Keith I. Block, MD's NPI number?
Keith I. Block, MD's National Provider Identifier (NPI) is 1538208764, issued on Feb 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Keith I. Block, MD located?
The NPPES record lists a practice address at 5230 Old Orchard RD, Skokie, IL, 60077. Phone: (847) 492-3040. Providers update this record themselves, so call before visiting.
How can I verify Keith I. Block, MD's license?
NPPES lists Illinois license number 036061051, 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 Keith I. Block, MD prescribe under Medicare Part D?
In 2024, Keith I. Block, MD had 161 Medicare Part D claims for 33 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.