Deirdra Greathouse-Williams, MD
Family Medicine Physician · New Lenox, IL
Deirdra Greathouse-Williams, MD is a family medicine physician with a practice address in New Lenox, Illinois, and NPI 1871549238, issued on May 26, 2006. Check the license (Illinois 036114405, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Deirdra Greathouse-Williams
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 036114405 IL
01061341A IN
Self-reported in NPPES; status is on the state search - Practice location
- 1890 Silver Cross Blvd, New Lenox, IL 60451
- Phone
- (815) 463-3700
- Enumerated
- May 26, 2006
- Record last updated
- Feb 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (815) 463-3701
- Medicaid ID
- 036114405 IL
- Medicare enrollment
- Enrolled (PECOS I20051115001029); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 1890 Silver Cross Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Deirdra Greathouse-Williams 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 036114405Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% more Medicare Part D claims than the average family medicine physician in 2024
3,836 Medicare Part D claims for 293 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 48 claims were for opioids.
Most prescribed
- Amlodipine Besylate233 claims
- Levothyroxine Sodium174 claims
- Pantoprazole Sodium150 claims
- Levocetirizine Dihydrochloride138 claims
- Metformin Hcl119 claims
- Atorvastatin Calcium116 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: $15.55
1 payment: food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 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.
Deirdra Greathouse-Williams among 6,215 family medicine physician records in Illinois
Deirdra Greathouse-Williams, MD 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2002 · median 2006 among the 3,714 with a school on file
- Record last updated2013 · 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).
16 family medicine physician records list a practice address in New Lenox
They are 16 of the 760 NPPES records with a practice address in New Lenox, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in New Lenox → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- David Calimag, D.O.New Lenox, IL 604511922112184
- Mark Christensen, D.O.New Lenox, IL 604511942314257
- Joan Covault, DONew Lenox, IL 604511346346236
- Jerome Daly, D.O.New Lenox, IL 604511891883773
- Tiffany Groen, D.O.New Lenox, IL 604511609019538
- Delaney Koehler, M.D.New Lenox, IL 604511649464652
- Rajasekhar Kolla, MDNew Lenox, IL 604511720160179
- Thomas Lee, M.D.New Lenox, IL 604511174588628
Common questions
What is Deirdra Greathouse-Williams, MD's NPI number?
Deirdra Greathouse-Williams, MD's National Provider Identifier (NPI) is 1871549238, issued on May 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Deirdra Greathouse-Williams, MD located?
The NPPES record lists a practice address at 1890 Silver Cross Blvd, New Lenox, IL, 60451. Phone: (815) 463-3700. Providers update this record themselves, so call before visiting.
How can I verify Deirdra Greathouse-Williams, MD's license?
NPPES lists Illinois license number 036114405, 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 Deirdra Greathouse-Williams, MD prescribe under Medicare Part D?
In 2024, Deirdra Greathouse-Williams, MD had 3,836 Medicare Part D claims for 293 beneficiaries; 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.