CALIXTO ANTONIO ROMERO III MD
NPI 1326507187
Internal Medicine - Critical Care Medicine in Little Rock, AR
About Calixto Antonio Romero Iii Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CALIXTO ANTONIO ROMERO III MD (NPI 1326507187) is an individual critical care medicine provider in Little Rock, Arkansas, licensed in Arkansas (E-17772) and active in the NPI registry since March 2019. He is enrolled in Medicare PECOS, maintains a secondary practice location in Lebanon, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Calixto Antonio Romero Iii Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show Calixto Romero reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Little Rock, AR 72205
- Reassigned Medicare billing, Arkansas enrollment
- 2,038 clinicians in this Medicare group
Little Rock, AR 72205
- Reassigned Medicare billing, Arkansas enrollment
- 140 clinicians in this Medicare group
Little Rock, AR 72205
- Reassigned Medicare billing, Arkansas enrollment
- 166 clinicians in this Medicare group
Charlestown, NH 03603
- Reassigned Medicare billing, New Hampshire enrollment
- 77 clinicians in this Medicare group
Brunswick, ME 04011
- Reassigned Medicare billing, Maine and New Hampshire enrollments
- 170 clinicians in this Medicare group
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.
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.
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.
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.
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
LITTLE ROCK, AR 72205
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 Calixto Romero's NPI number?
The NPI number for Calixto Romero is 1326507187. It was assigned to this individual provider in the NPPES registry on March 19, 2019.
Where is Calixto Romero located?
Calixto Romero practices at 4301 W Markham St # 584, Little Rock, AR 72205. The listed phone number is (501) 526-2085.
What is Calixto Romero's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Calixto Romero enrolled in Medicare?
Yes. Calixto Romero is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Calixto Romero's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Calixto Romero reassigns Medicare benefits to 5 organizations: University Of Arkansas For Medical Sciences (Little Rock, AR), Arkansas Health Group (Little Rock, AR), Baptist Medcare, Inc (Little Rock, AR), Valley Regional Hospital, Inc (Charlestown, NH) and Bluewater Emergency Partners Of Brunswick, LLC (Brunswick, ME). Each 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 Calixto Romero's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Calixto Romero accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 6 other insurers list Calixto Romero 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 Calixto Romero was last updated on August 6, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Calixto Antonio Romero III, MD · NPI 1326507187
Critical Care Medicine physician in Little Rock, Arkansas. Individual provider, active in the CMS NPPES registry since March 19, 2019.
## Identity
- **NPI:** 1326507187 (Entity type: Individual)
- **Enumerated:** March 19, 2019
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** E-17772 (Arkansas)
- **Sole proprietor:** No
## Practice location
- **Address:** 4301 W MARKHAM ST # 584, Little Rock, AR 72205-7101
- **Phone:** (501) 526-2085 · **Fax:** (501) 526-2059
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): University Of Arkansas For Medical Sciences (NPI 1043372220, Little Rock, AR); Arkansas Health Group (NPI 1639615925, Little Rock, AR); Baptist Medcare, Inc (NPI 1699868323, Little Rock, AR); Valley Regional Hospital, Inc (NPI 1720480619, Charlestown, NH); Bluewater Emergency Partners Of Brunswick, LLC (NPI 1043640204, Brunswick, ME) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** August 6, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1326507187) · Data from the CMS NPPES public registry.