William L. Koontz, MD
Maternal & Fetal Medicine Physician · Louisville, KY
William L. Koontz, MD is a maternal & fetal medicine physician with a practice address in Louisville, Kentucky, and NPI 1699777268, issued on Aug 12, 2005. Check the license (Kentucky 22633, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- William L. Koontz
- Credential
- MD
- Primary taxonomy
- Maternal & Fetal Medicine Physician 207VM0101X
- License number
- 22633 KY
Self-reported in NPPES; status is on the state search - Practice location
- 4121 Dutchmans LN, Louisville, KY 40207
- Phone
- (502) 899-6755
- Enumerated
- Aug 12, 2005
- Record last updated
- Apr 23, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (502) 899-6753
- Medicaid ID
- 64226335 KY
- Entity
- Type 1 · individual
8 nearest maternal & fetal medicine physician records → All 42 in Kentucky → Look up another NPI →
Also registered at 4121 Dutchmans LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Allen, MDSurgery Physician1174502728
- Mary Becker, APRNNurse Practitioner1952305807
- Sylvia Beimfohr, MDGynecology Physician1174521157
- Thomas Benninger, M.D.Gynecology Physician1619979382
- Tony Brosky, PTPhysical Therapist1316083967
- Cynthia Canter, NPObstetrics & Gynecology Nurse Practitioner1669772109
Verify William L. Koontz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKentucky Board of Medical Licensure
Search for license 22633Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average maternal & fetal medicine physician in 2024
12 Medicare Part D claims, against an average of 41 among the 353 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.
William L. Koontz among 42 maternal & fetal medicine physician records in Kentucky
William L. Koontz, MD is one of 42 maternal & fetal medicine physician records with a practice address in Kentucky. 88% 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, 90% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileNo · 76% of these records are
- Record last updated2012 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VM0101X and a Kentucky practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Maternal & Fetal Medicine Physician providers in Kentucky
There are 42 maternal & fetal medicine physician records in Kentucky.
All 42 in Kentucky → Every provider in Louisville → Maternal & Fetal Medicine Physician nationwide →
The 8 maternal & fetal medicine physician records with the nearest ZIP codes
- Agatha Critchfield, MDLouisville, KY 402071639336019
- Larry Griffin, M.D.Louisville, KY 402071972508133
- Helen How, M.D.Louisville, KY 402071912932203
- Whitney Jamie, M.D.Louisville, KY 402071467418103
- Stacey Stivers, MDLouisville, KY 402071629506563
- Jonathan Weeks, MDLouisville, KY 402071376509018
- Vernon Cook, Jr., M.D.Louisville, KY 402021487672663
- Jamil El-Farra, MDLouisville, KY 402021912225665
Common questions
What is William L. Koontz, MD's NPI number?
William L. Koontz, MD's National Provider Identifier (NPI) is 1699777268, issued on Aug 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William L. Koontz, MD located?
The NPPES record lists a practice address at 4121 Dutchmans LN, Louisville, KY, 40207. Phone: (502) 899-6755. Providers update this record themselves, so call before visiting.
How can I verify William L. Koontz, MD's license?
NPPES lists Kentucky license number 22633, as entered by the provider. Search the Kentucky Board of Medical Licensure at https://web1.ky.gov/GenSearch/LicenseSearch.aspx?AGY=5. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William L. Koontz, MD prescribe under Medicare Part D?
In 2024, William L. Koontz, MD had 12 Medicare Part D claims; the average among maternal & fetal medicine physician prescribers was 41. 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.