1. Home
  2. Directory
  3. Arkansas
  4. Little Rock
  5. Psychiatry Neurology
  6. NPI Profile

CATHERINE ALICIA NIX MD
NPI 1548721723
Psychiatry & Neurology - Psychiatry in Little Rock, AR

Active since March 28, 2019PECOS Enrolled
100/100
CMS Quality Rating
4301 W MARKHAM ST # 520, LITTLE ROCK, AR 72205(501) 686-6627 Get Directions Write a Review

NPPES record last updated: August 30, 2023. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Aug 30, 2023, Dec 3, 2021 (2 updates tracked since 2021).

About Catherine Alicia Nix Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CATHERINE ALICIA NIX MD (NPI 1548721723) is an individual psychiatry provider in Little Rock, Arkansas, licensed in North Carolina (2023-02403) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1548721723
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameCATHERINE ALICIA NIXCredential: MD
Location Address4301 W MARKHAM ST # 520Little Rock, AR 72205-7101
Mailing Address428 Biltmore AveAsheville, NC 28801-4502
Phone(501) 686-6627
Sole ProprietorYes
Enumeration DateMarch 28, 2019
Last NPPES UpdateAugust 30, 20232 updates tracked since enumeration
NPPES CertifiedAugust 30, 2023
✔ NPI 1548721723 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in NC · 2023-02403
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
4301 W MARKHAM ST # 520, Little Rock, AR 72205
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11 Childrens Way # 520Little Rock, AR 72202-3500 · Phone (501) 686-6627
Location 2428 Biltmore AveAsheville, NC 28801-4502 · Phone (000) 000-0000

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include AmeriHealth Caritas Next, Oscar Health Plan of North Carolina, Inc.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Catherine Alicia Nix Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Catherine Nix reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mission Community Anesthesiology Specialists LLC
546 mi
Pain Medicine
89 HOSPITAL DR STE C
Brevard, NC 28712
  • Reassigned Medicare billing, North Carolina enrollment
  • Medicare enrollment name: Mission Health Community Multispecialty Providers LLC
  • 824 clinicians in this Medicare group
NPI 1598235830 (828) 213-1740

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
85 services30 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
53 services19 patients
Psychiatric diagnostic evaluation with medical services 90792
A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.
23 services21 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
14 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 72205 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$157.74 typical visit price
range $51.36 – $157.74
Typical copayment $39.43 (range $12.84 – $39.43)
Most-billed visit code 99205
Established Patient
$64.56 typical visit price
range $16.16 – $128.77
Typical copayment $16.14 (range $4.04 – $32.19)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SANDRA MINERVA GARCIA OSOGOBIO MD
Colon & Rectal Surgery
4301 W MARKHAM ST # 520
LITTLE ROCK, AR 72205
Pulaski County (501) 686-8000
MISS MARINNA RAEF TADROS MD
Student in an Organized Health Care Education/Training Program
4301 W MARKHAM ST # 520
LITTLE ROCK, AR 72205
Pulaski County (501) 626-6627
MADELINE NACHTIGAL DO
Student in an Organized Health Care Education/Training Program
4301 W MARKHAM ST # 520
LITTLE ROCK, AR 72205
Pulaski County (501) 686-5205
LAUREN JOHNSON
Student in an Organized Health Care Education/Training Program
4301 W MARKHAM ST # 520
LITTLE ROCK, AR 72205
Pulaski County (501) 686-6912
ALEXANDRA GRACE OTWELL MD
Student in an Organized Health Care Education/Training Program
4301 W MARKHAM ST # 520
LITTLE ROCK, AR 72205
Pulaski County (501) 686-6627
DR. LEVI DANIEL WATSON MD
Student in an Organized Health Care Education/Training Program
4301 W MARKHAM ST # 520
LITTLE ROCK, AR 72205
Pulaski County (501) 686-6627
DR. GREGORY TYLER RIVES MD
Surgery
4301 W MARKHAM ST # 520
LITTLE ROCK, AR 72205
Pulaski County (501) 686-8000
JOSEPH DELOACH
Student in an Organized Health Care Education/Training Program
4301 W MARKHAM ST # 520
LITTLE ROCK, AR 72205
Pulaski County (501) 686-6627

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Catherine Nix's NPI number?

The NPI number for Catherine Nix is 1548721723. It was assigned to this individual provider in the NPPES registry on March 28, 2019.

Where is Catherine Nix located?

Catherine Nix practices at 4301 W Markham St # 520, Little Rock, AR 72205. The listed phone number is (501) 686-6627.

What is Catherine Nix's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Catherine Nix enrolled in Medicare?

Yes. Catherine Nix is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Catherine Nix's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Nix reassigns Medicare benefits to Mission Community Anesthesiology Specialists LLC (Brevard, NC). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Catherine Nix's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Catherine Nix accept?

Health plans from AmeriHealth Caritas Next and Oscar Health Plan of North Carolina, Inc list Catherine Nix as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Catherine Nix was last updated on August 30, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.