Heather Diann Knowles, APN-BC ACNP
Acute Care Nurse Practitioner · Mount Vernon, IL
Heather Diann Knowles, APN-BC ACNP is an acute care nurse practitioner with a practice address in Mount Vernon, Illinois, and NPI 1922244045, issued on Dec 18, 2008. Check the license (Illinois 209007400, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Heather Diann Knowles
- Credential
- APN-BC ACNP
- Primary taxonomy
- Acute Care Nurse Practitioner 363LA2100X
- License number
- 209007400 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4109 S Water Tower PL, Mount Vernon, IL 62864
- Phone
- (618) 244-4060
- Enumerated
- Dec 18, 2008
- Record last updated
- Mar 12, 2026
- Fax
- (618) 242-1350
- Medicare enrollment
- Enrolled (PECOS I20090123000448); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest acute care nurse practitioner records → All 639 in Illinois → Look up another NPI →
Also registered at 4109 S Water Tower PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Knowles, MDUrology Physician1881699908
Verify Heather Diann Knowles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209007400Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.6 times the Medicare Part D claims of the average acute care nurse practitioner in 2024
2,149 Medicare Part D claims for 490 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Tamsulosin Hcl397 claims
- Finasteride287 claims
- Solifenacin Succinate231 claims
- Cephalexin192 claims
- Gemtesa154 claims
- Estradiol105 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $945.02
52 payments; by number, the most common kind was food and beverage; the largest payer was Sumitomo Pharma America, Inc. The 10,984 providers of this specialty with any payment received $647.94 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
- Advanced Urologic Surgeons PCMount Vernon, IL
- Washington County Hospital DistrictNashville, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Heather Diann Knowles among 639 acute care nurse practitioner records in Illinois
Heather Diann Knowles, APN-BC ACNP is one of 639 acute care nurse practitioner records with a practice address in Illinois. 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 2008, is newer than 10% of them.
- NPI issued2008 · 10% of these records are older, 85% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2005 · median 2017 among the 434 with a school on file
- Record last updated2026 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Acute Care Nurse Practitioner providers in Illinois
There are 639 acute care nurse practitioner records in Illinois.
All 639 in Illinois → Every provider in Mount Vernon → Acute Care Nurse Practitioner nationwide →
The 8 acute care nurse practitioner records with the nearest ZIP codes
- Diane Destefano, APRNMount Carmel, IL 628631063797314
- Sarah Pinkston, NPMount Carmel, IL 628631861918559
- Heather JohnsonMc Leansboro, IL 628591841661287
- Catherine Durbin, APNSalem, IL 628811548664170
- Stephen Welty, NURSE PRACTITIONERFairfield, IL 628371811640105
- Katherine Laird, NPDu Quoin, IL 628321154690980
- Kaile EggemeyerCarbondale, IL 629011588264493
- Cary Bailey, MSN, ACNP-BCCarterville, IL 629181871870394
Common questions
What is Heather Diann Knowles, APN-BC ACNP's NPI number?
Heather Diann Knowles, APN-BC ACNP's National Provider Identifier (NPI) is 1922244045, issued on Dec 18, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Heather Diann Knowles, APN-BC ACNP located?
The NPPES record lists a practice address at 4109 S Water Tower PL, Mount Vernon, IL, 62864. Phone: (618) 244-4060. Providers update this record themselves, so call before visiting.
How can I verify Heather Diann Knowles, APN-BC ACNP's license?
NPPES lists Illinois license number 209007400, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Heather Diann Knowles, APN-BC ACNP prescribe under Medicare Part D?
In 2024, Heather Diann Knowles, APN-BC ACNP had 2,149 Medicare Part D claims for 490 beneficiaries; the average among acute care nurse practitioner prescribers was 594. Part D covers Medicare prescriptions only.
What is Heather Diann Knowles, APN-BC ACNP's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.