NPPES file of Aug 9, 2026

Karen M. Gross, ANP

Adult Health Nurse Practitioner · Washington, MO

Karen M. Gross, ANP is an adult health nurse practitioner with a practice address in Washington, Missouri, and NPI 1518170596, issued on May 7, 2007. Check the license (Missouri 100677, 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
1518170596
Name
Karen M. Gross
Credential
ANP
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License number
100677 MO
Self-reported in NPPES; status is on the state search
Practice location
901 Patients First Dr, Washington, MO 63090
Phone
(636) 239-7500
Enumerated
May 7, 2007
Record last updated
Nov 6, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(636) 239-2836
Medicaid IDs
1518170596 MO
429906803 MO
Medicare enrollment
Enrolled (PECOS I20070522000675); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 901 Patients First Dr

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

  1. Jeffery Armstrong, PA CPhysician Assistant1972597136
  2. Bryce Ayers, M.D.Internal Medicine Physician1689610446
  3. Tamara Bailey, FNP-CFamily Nurse Practitioner1184122327
  4. Kelly Bain, M.D.Family Medicine Physician1982645818
  5. Dilip Banerjee, M.D.Cardiovascular Disease Physician1902828742
  6. Kristy Bestgen, MSN, APRN, FNP-CFamily Nurse Practitioner1326487315

Verify Karen M. Gross 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 100677
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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4.2 times the Medicare Part D claims of the average adult health nurse practitioner in 2024

5,420 Medicare Part D claims for 1,156 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. 103 claims were for opioids.

  1. Karen Gross5,420
  2. Specialty average1,280

Most prescribed

  1. Atorvastatin Calcium200 claims
  2. Methylprednisolone184 claims
  3. Cefuroxime169 claims
  4. Rosuvastatin Calcium143 claims
  5. Duloxetine Hcl139 claims
  6. Levothyroxine Sodium131 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: $1,934.04

102 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 12,291 providers of this specialty with any payment received $946.40 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Karen Gross$1,934.04
  2. Specialty average$946.40

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

Bills Medicare through one group practice

  1. Mercy Clinic East CommunitiesSaint Louis, MO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Karen M. Gross among 794 adult health nurse practitioner records in Missouri

Karen M. Gross, ANP is one of 794 adult health nurse practitioner records with a practice address in Missouri. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 19% of them.

  • NPI issued2007 · 19% of these records are older, 72% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated1998 · median 2013 among the 399 with a school on file
  • Record last updated2014 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

9 adult health nurse practitioner records list a practice address in Washington

They are 9 of the 533 NPPES records with a practice address in Washington, and 794 adult health nurse practitioner records in Missouri.

The 8 adult health nurse practitioner records with the nearest ZIP codes

  1. Elizabeth Aholt, ANP-CWashington, MO 630901568168623
  2. Christina Blankenship, NPWashington, MO 630901609537562
  3. Jane Hancock, ANPWashington, MO 630901891969952
  4. Dena Kruse, NPWashington, MO 630901245503978
  5. Rhonda Pepmiller, ANP-BC,CWOCNWashington, MO 630901578824116
  6. Marie Sander, RN, ANP-BCWashington, MO 630901467792523
  7. Lisa Wilson, AGNPWashington, MO 630901710307889
  8. Victoria Yenzer, NPWashington, MO 630901043422488

Common questions

What is Karen M. Gross, ANP's NPI number?

Karen M. Gross, ANP's National Provider Identifier (NPI) is 1518170596, issued on May 7, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Karen M. Gross, ANP located?

The NPPES record lists a practice address at 901 Patients First Dr, Washington, MO, 63090. Phone: (636) 239-7500. Providers update this record themselves, so call before visiting.

How can I verify Karen M. Gross, ANP's license?

NPPES lists Missouri license number 100677, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity only.

How much does Karen M. Gross, ANP prescribe under Medicare Part D?

In 2024, Karen M. Gross, ANP had 5,420 Medicare Part D claims for 1,156 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. 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.