NPPES file of Aug 9, 2026

Penny Kaye Grechus, MSN, RN, PMHNP-BC

Psychiatric/Mental Health Nurse Practitioner · Potosi, MO

Penny Kaye Grechus, MSN, RN, PMHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Potosi, Missouri, and NPI 1124648423, issued on Apr 16, 2020. Check the license (Missouri 089120, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1124648423
Name
Penny Kaye Grechus
Credential
MSN, RN, PMHNP-BC
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License number
089120 MO
Self-reported in NPPES; status is on the state search
Practice location
1 Southtowne Dr, Potosi, MO 63664
Phone
(573) 438-7892
Enumerated
Apr 16, 2020
Record last updated
Apr 16, 2020 (not updated in 6 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest psychiatric/mental health nurse practitioner records → All 765 in Missouri → Look up another NPI →

Also registered at 1 Southtowne Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Steffany Ahlheim, FNPFamily Nurse Practitioner1639931355
  2. Bethany Aubuchon, LCSWClinical Social Worker1689275992
  3. Timothy Bass, M.D.Family Medicine Physician1760914980
  4. Melissa Benson, LMSWClinical Social Worker1164206868
  5. Ronnie BuckinghamFamily Nurse Practitioner1609726504
  6. Jason Butler, FNPFamily Nurse Practitioner1417073297

Verify Penny Kaye Grechus in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Missouri board licenses this profession
    Search for license 089120    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Missouri license search

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91% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

83 Medicare Part D claims, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.

  1. Penny Grechus83
  2. Specialty average906

Most prescribed

  1. Duloxetine Hcl16 claims
  2. Aripiprazole13 claims
  3. Desvenlafaxine Succinate Er13 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: $248.61

18 payments; by number, the most common kind was food and beverage; the largest payer was Axsome Therapeutics, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Penny Grechus$248.61
  2. Specialty average$1,027.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Penny Kaye Grechus among 765 psychiatric/mental health nurse practitioner records in Missouri

Penny Kaye Grechus, MSN, RN, PMHNP-BC is one of 765 psychiatric/mental health nurse practitioner records with a practice address in Missouri. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 41% of them.

  • NPI issued2020 · 41% of these records are older, 54% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileNo · 65% of these records are
  • Record last updated2020 · 20% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

3 psychiatric/mental health nurse practitioner records list a practice address in Potosi

They are 3 of the 111 NPPES records with a practice address in Potosi, and 765 psychiatric/mental health nurse practitioner records in Missouri.

All 765 in Missouri → Every provider in Potosi → Psychiatric/Mental Health Nurse Practitioner nationwide →

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Jennifer Gillam, PMHNP-BCPotosi, MO 636641952277741
  2. Nancy McNail, PMHNPPotosi, MO 636641811256720
  3. Jared Arnett, PMHNPSte Genevieve, MO 636701053703488
  4. Sarah Mueller, PMHNP-BCFredericktown, MO 636451851025696
  5. Tammy Christopher, LPNFarmington, MO 636401770672495
  6. Andrea Crawford, PMHNPFarmington, MO 636401376042069
  7. Gabriel CrawfordFarmington, MO 636401730546243
  8. Amy Graham, MSN, PMHNP-BCFarmington, MO 636401851936736

Common questions

What is Penny Kaye Grechus, MSN, RN, PMHNP-BC's NPI number?

Penny Kaye Grechus, MSN, RN, PMHNP-BC's National Provider Identifier (NPI) is 1124648423, issued on Apr 16, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Penny Kaye Grechus, MSN, RN, PMHNP-BC located?

The NPPES record lists a practice address at 1 Southtowne Dr, Potosi, MO, 63664. Phone: (573) 438-7892. Providers update this record themselves, so call before visiting.

How can I verify Penny Kaye Grechus, MSN, RN, PMHNP-BC's license?

NPPES lists Missouri license number 089120, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.

How much does Penny Kaye Grechus, MSN, RN, PMHNP-BC prescribe under Medicare Part D?

In 2024, Penny Kaye Grechus, MSN, RN, PMHNP-BC had 83 Medicare Part D claims; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.