Katherine Ross Flynn, PMHNP-BC
Psychiatric/Mental Health Nurse Practitioner · Brookhaven, MS
Katherine Ross Flynn, PMHNP-BC is a psychiatric/mental health nurse practitioner with a practice address in Brookhaven, Mississippi, and NPI 1639654171, issued on Oct 1, 2018. Check the license (Mississippi 902967, as entered in NPPES) with the Mississippi board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Ross Flynn
- Credential
- PMHNP-BC
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- 902967 MS
Self-reported in NPPES; status is on the state search - Practice location
- 439 N Jackson St, Brookhaven, MS 39601
- Phone
- (601) 835-9499
- Enumerated
- Oct 1, 2018
- Record last updated
- Oct 25, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20181120003037); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 624 in Mississippi → Look up another NPI →
Verify Katherine Ross Flynn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Mississippi board licenses this profession
Search for license 902967Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
339 Medicare Part D claims for 29 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Buspirone Hcl53 claims
- Bupropion Xl33 claims
- Duloxetine Hcl32 claims
- Trazodone Hcl31 claims
- Escitalopram Oxalate20 claims
- Desvenlafaxine Succinate Er19 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.
The MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $346.60
18 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
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
- Kdmc Physician Clinics LLCBrookhaven, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Ross Flynn among 624 psychiatric/mental health nurse practitioner records in Mississippi
Katherine Ross Flynn, PMHNP-BC is one of 624 psychiatric/mental health nurse practitioner records with a practice address in Mississippi. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 33% of them.
- NPI issued2018 · 33% of these records are older, 62% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2018 · median 2020 among the 366 with a school on file
- Record last updated2018 · 30% 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 Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 psychiatric/mental health nurse practitioner records list a practice address in Brookhaven
They are 6 of the 309 NPPES records with a practice address in Brookhaven, and 624 psychiatric/mental health nurse practitioner records in Mississippi.
All 624 in Mississippi → Every provider in Brookhaven → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Yolanda Bridges, PMHMPBrookhaven, MS 396011922924455
- Charles Burns, RN, MSNBrookhaven, MS 396011497614952
- Mary LumleyBrookhaven, MS 396011093329633
- William Rushing, PMHNP-BCBrookhaven, MS 396011952083370
- David Smith, MSN, PMHNP-BCBrookhaven, MS 396011396106456
- Michael Baker, NPPascagoula, MS 395811891354114
- Tiffany Dennis, APRN, PMHNPPascagoula, MS 395811124914981
- Lacondra Malcom, PMHNPPascagoula, MS 395811487012043
Common questions
What is Katherine Ross Flynn, PMHNP-BC's NPI number?
Katherine Ross Flynn, PMHNP-BC's National Provider Identifier (NPI) is 1639654171, issued on Oct 1, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Ross Flynn, PMHNP-BC located?
The NPPES record lists a practice address at 439 N Jackson St, Brookhaven, MS, 39601. Phone: (601) 835-9499. Providers update this record themselves, so call before visiting.
How can I verify Katherine Ross Flynn, PMHNP-BC's license?
NPPES lists Mississippi license number 902967, as entered by the provider. Search the Mississippi board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Ross Flynn, PMHNP-BC prescribe under Medicare Part D?
In 2024, Katherine Ross Flynn, PMHNP-BC had 339 Medicare Part D claims for 29 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions only.
What is Katherine Ross Flynn, PMHNP-BC's MIPS final score?
The 2023 MIPS final score is 93.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.