William Cruikshank, M.D.
Internal Medicine Physician · Oak Lawn, IL
William Cruikshank, M.D. is an internal medicine physician with a practice address in Oak Lawn, Illinois, and NPI 1639104052, issued on Jul 12, 2006. Check the license (Illinois 036-081634, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- William Cruikshank
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-081634 IL
Self-reported in NPPES; status is on the state search - Practice location
- 6101 W 95TH St, Oak Lawn, IL 60453
- Phone
- (708) 261-0831
- Enumerated
- Jul 12, 2006
- Entity
- Type 1 · individual
Also registered at 6101 W 95TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Samira GhaniwalaFamily Medicine Physician1699161943
- Hina Iqbal, MDStudent in an Organized Health Care Education/Training Program1548586845
Verify William Cruikshank 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 036-081634Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
12 Medicare Part D claims, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
178 internal medicine physician records list a Oak Lawn practice address
They are 178 of the 2,993 NPPES records with a Oak Lawn practice address, and 8,522 internal medicine physician records in Illinois.
All 178 in Oak Lawn → All 8,522 in Illinois → Every provider in Oak Lawn →
Other internal medicine physician records in Illinois
- Peter Abadeer, D.O.Bloomington, IL1760469522
- Pamela Abadi, D.O.Winfield, IL1588820179
- 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
- Misha Abbasi, MDChicago, IL1770111635
Common questions
What is William Cruikshank, M.D.'s NPI number?
William Cruikshank, M.D.'s National Provider Identifier (NPI) is 1639104052, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Cruikshank, M.D. located?
The NPPES record lists a practice address at 6101 W 95TH St, Oak Lawn, IL, 60453. Phone: (708) 261-0831. Providers update this record themselves, so call before visiting.
How can I verify William Cruikshank, M.D.'s license?
NPPES lists Illinois license number 036-081634, 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 William Cruikshank, M.D. prescribe under Medicare Part D?
In 2024, William Cruikshank, M.D. had 12 Medicare Part D claims; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.