William Frederick Krooss, MD
Family Medicine Physician · Pearl, MS
William Frederick Krooss, MD is a family medicine physician with a practice address in Pearl, Mississippi, and NPI 1588653901, issued on Oct 18, 2005. Check the license (Mississippi 08839, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- William Frederick Krooss
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 08839 MS
Self-reported in NPPES; status is on the state search - Practice location
- 187 Doctors Dr, Pearl, MS 39208
- Phone
- (601) 939-8921
- Enumerated
- Oct 18, 2005
- Record last updated
- May 9, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (601) 932-5902
- Medicaid ID
- 00015628 MS
- Medicare enrollment
- Enrolled (PECOS I20230110001770); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 1976
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,165 in Mississippi → Look up another NPI →
Also registered at 187 Doctors Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kurt Johnson, MDFamily Medicine Physician1598754913
- Karen Seago, NPAdult Health Nurse Practitioner1164664348
Verify William Frederick Krooss in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 08839Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average family medicine physician in 2024
363 Medicare Part D claims for 141 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass28 claims
- Furosemide17 claims
- Clopidogrel16 claims
- Eliquis16 claims
- Pantoprazole Sodium15 claims
- Prednisone14 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: $38.11
2 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. 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.
Bills Medicare through 2 group practices
- Central Louisiana Physicians, LLCAlexandria, LA
- Hospital Physician Services - Southeast Professional CorporationZachary, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Frederick Krooss among 1,165 family medicine physician records in Mississippi
William Frederick Krooss, MD is one of 1,165 family medicine physician records with a practice address in Mississippi. 79% 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, 91% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1976 · median 2003 among the 748 with a school on file
- Record last updated2019 · 60% 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 Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 family medicine physician records list a practice address in Pearl
They are 8 of the 198 NPPES records with a practice address in Pearl, and 1,165 family medicine physician records in Mississippi.
All 1,165 in Mississippi → Every provider in Pearl → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Amos Belknap, MDPearl, MS 392081972527372
- Nancy Collins, MDPearl, MS 392081902829609
- Kurt Johnson, MDPearl, MS 392081598754913
- Teresa Mendenhall, M.D.Pearl, MS 392081275566697
- Jacob Morris, MDPearl, MS 392081386209500
- Melissa Sanders, DOPearl, MS 392081184156804
- Tina VillanuevaPearl, MS 392081710849195
- Patrick Bynum, MDJackson, MS 392091437179967
Common questions
What is William Frederick Krooss, MD's NPI number?
William Frederick Krooss, MD's National Provider Identifier (NPI) is 1588653901, issued on Oct 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Frederick Krooss, MD located?
The NPPES record lists a practice address at 187 Doctors Dr, Pearl, MS, 39208. Phone: (601) 939-8921. Providers update this record themselves, so call before visiting.
How can I verify William Frederick Krooss, MD's license?
NPPES lists Mississippi license number 08839, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Frederick Krooss, MD prescribe under Medicare Part D?
In 2024, William Frederick Krooss, MD had 363 Medicare Part D claims for 141 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.