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CARLA KHALAF MCSTAY MD
NPI 1396193983
Internal Medicine - Hospice and Palliative Medicine in Dallas, TX

Active since May 25, 2016PECOS EnrolledAccepts Medicare Assignment
74.59/100
CMS Quality Rating
6201 HARRY HINES BLVD, DALLAS, TX 75390(214) 633-5555 Get Directions Write a Review

NPPES record last updated: July 21, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 21, 2021, May 24, 2021, Mar 16, 2021 and 2 more (5 updates tracked since 2016).

About Carla Khalaf Mcstay Md NPPES

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

CARLA KHALAF MCSTAY MD (NPI 1396193983) is an individual hospice and palliative medicine provider in Dallas, Texas, licensed in Texas (T0255) and active in the NPI registry since May 2016. She is enrolled in Medicare PECOS, is affiliated with Ut Southwestern University Hospital - William P. Clements Jr., and is a graduate of Texas Tech University Health Science Center School Of Medicine (2016).

NPPES Registry Identity

NPI1396193983
Entity TypeIndividualFemale
Primary Taxonomy207RH0002X
Provider Legal NameCARLA KHALAF MCSTAYCredential: MD
Location Address6201 HARRY HINES BLVDDallas, TX 75390-3410
Mailing AddressPo Box 845347Dallas, TX 75284-7208
Phone(214) 633-5555
Sole ProprietorNo
Medical School CMSTexas Tech University Health Science Center School Of MedicineGraduated 2016
Enumeration DateMay 25, 2016
Last NPPES UpdateJuly 21, 20215 updates tracked since enumeration
NPPES CertifiedJuly 21, 2021
✔ NPI 1396193983 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RH0002X
License✔ Licensed in TX · T0255
Definition
An internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License MD470242 (PA)
6201 HARRY HINES BLVD, Dallas, TX 75390
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.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

Carla Khalaf Mcstay 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.

PECOS PAC ID6305127291
PECOS Enrollment IDI20210629000180
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 Reassignments

2

Medicare enrollment records show Carla Khalaf Mcstay reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

University Of Texas Southwestern Medical Center At Dallas
0.2 mi
Rehabilitation
6011 HARRY HINES BLVD
Dallas, TX 75235
  • Reassigned Medicare billing, Texas enrollment
  • 5,299 clinicians in this Medicare group
NPI 1043418205 (214) 645-0624
University Of Pittsburgh Physicians
1,048 mi
Neurological Surgery
425 W FIFTH ST, EAST LIVERPOOL CITY HOSPITAL
East Liverpool, OH 43920
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 7,114 clinicians in this Medicare group
NPI 1811945793 (330) 386-3195

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 5

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.
47 services27 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
28 services28 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
21 services14 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
15 services11 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.
13 services11 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

5/5 CMS rating
OwnershipGovernment - State
CMS Certification Number450044
Location6201 Harry Hines BlvdDallas, TX 75390 · Dallas County
Emergency services Birthing friendly

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.

74.59/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality56.12
Promoting Interoperability100
Improvement Activities40
Cost59.2

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.

ALVIN A CHANDRA M.D.
Internal Medicine (Cardiovascular Disease)
6201 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 633-5555
MR. JONATHAN DEVRIES D.O.
Psychiatry & Neurology (Psychiatry)
6201 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 633-0580
ABDULLAH SHOAIB M.D.
Psychiatry & Neurology (Neurology with Special Qualifications in Child Neurology)
6201 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 648-3916
DR. SITARAM BARATH MD
Radiology (Vascular & Interventional Radiology)
6201 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 645-1717
BRITNEY WEBSTER APRN, NNP-BC
Nurse Practitioner (Neonatal, Critical Care)
6201 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 633-0599
DR. HELEN LYNNE KING M.D.
Internal Medicine (Infectious Disease)
6201 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 633-5555
MURTAZA AHMED MD
Hospitalist
6201 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (214) 645-3597
LULU LIU TENORIO MD
Radiology (Diagnostic Radiology)
6201 HARRY HINES BLVD
DALLAS, TX 75390
Dallas County (469) 207-3563

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 Carla Khalaf Mcstay's NPI number?

The NPI number for Carla Khalaf Mcstay is 1396193983. It was assigned to this individual provider in the NPPES registry on May 25, 2016.

Where is Carla Khalaf Mcstay located?

Carla Khalaf Mcstay practices at 6201 Harry Hines Blvd, Dallas, TX 75390. The listed phone number is (214) 633-5555.

What is Carla Khalaf Mcstay's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207RH0002X.

Is Carla Khalaf Mcstay enrolled in Medicare?

Yes. Carla Khalaf Mcstay 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 Carla Khalaf Mcstay's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Carla Khalaf Mcstay reassigns Medicare benefits to 2 organizations: University Of Texas Southwestern Medical Center At Dallas (Dallas, TX) and University Of Pittsburgh Physicians (East Liverpool, OH). 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 Carla Khalaf Mcstay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Carla Khalaf Mcstay accept?

Health plans from Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 1 other insurer list Carla Khalaf Mcstay 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.

Is Carla Khalaf Mcstay affiliated with any hospitals?

According to CMS data, Carla Khalaf Mcstay is affiliated with Ut Southwestern University Hospital - William P. Clements Jr..

When was this NPI record last updated?

The NPPES record for Carla Khalaf Mcstay was last updated on July 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.