DR. ROBERT C. HOLLADAY M.D.
NPI 1124023668
Internal Medicine - Pulmonary Disease in Shreveport, LA

Q: What is Robert Holladay's NPI number?

The NPI number for Robert Holladay is 1124023668. It was assigned to this individual provider in the NPPES registry on June 20, 2005.

Q: What is Robert Holladay's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Q: When was this NPI record last updated?

The NPPES record for Robert Holladay was last updated on February 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.

Active since June 20, 2005PECOS EnrolledAccepts Medicare Assignment

850 OLIVE ST, STE A, SHREVEPORT, LA 71104(318) 222-3662(318) 222-0034 Get Directions Write a Review

NPPES record last updated: February 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Robert C. Holladay M.d. NPPES

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

DR. ROBERT C. HOLLADAY M.D. (NPI 1124023668) is an individual pulmonary disease provider in Shreveport, Louisiana, licensed in Louisiana (020136) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS, is affiliated with Natchitoches Regional Medical Center, and maintains a secondary practice location in Shreveport.

NPPES Registry Identity

NPI1124023668

Entity TypeIndividualMale

Primary Taxonomy207RP1001X

Provider Legal NameDR. ROBERT C. HOLLADAYCredential: M.D.

Location Address850 OLIVE ST, STE AShreveport, LA 71104-2162

Mailing Address850 Olive St, Ste AShreveport, LA 71104-2162 · (318) 222-3662 · Fax (318) 222-0034

Phone(318) 222-3662

Fax(318) 222-0034

Sole ProprietorNo

Medical School CMSLouisiana State University School Of Medicine In ShreveportGraduated 1988

Enumeration DateJune 20, 2005

Last NPPES UpdateFebruary 12, 2025

NPPES CertifiedFebruary 12, 2025

✔ NPI 1124023668 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in LA · 020136

Definition

An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

Also ListedInternal MedicineTaxonomy 207R00000X · License MD.020136 (LA)

Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License MD.020136 (LA)

850 OLIVE ST, Shreveport, LA 71104

Open in Google Maps ↗

Secondary Practice Location 1

Location 11541 Kings HwyShreveport, LA 71103-4228 · Phone (318) 626-0000

Other Identifiers 1

Medicaid1987115LA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Louisiana, CHRISTUS Health Plan, HMO Louisiana.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

Dr. Robert C. Holladay M.d. 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 ID2769571371

PECOS Enrollment IDI20090225000709

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

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

Lsu Health Sciences Center Shreveport Faculty Group Practice

1.1 mi

Family Medicine

1541 KINGS HWY
Shreveport, LA 71103

Reassigned Medicare billing, Louisiana enrollment
1,167 clinicians in this Medicare group

NPI 1013374222 (318) 626-0000

Nrmc Physician Ipa Inc

64 mi

Radiation Oncology

211 MEDICAL DR
Natchitoches, LA 71457

Reassigned Medicare billing, Louisiana enrollment
41 clinicians in this Medicare group

NPI 1003484114 (318) 238-3322

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 12

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.

308 services69 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.

126 services39 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

111 services75 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

56 services27 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

52 services39 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.

33 services32 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

29 services28 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

26 services23 patients

Test to measure rate of airflow 94375

This test, known as spirometry, measures how much air you can breathe in and out, and how quickly you can do so. It helps assess your lung function and can be used to diagnose or monitor conditions like asthma or COPD.

15 services15 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

15 services15 patients

Irrigation and suction of lung airways to obtain cells using an endoscope 31624

This is a procedure where a thin, flexible tube called an endoscope is inserted through your mouth into the lungs. A small amount of saline is then introduced to wash the airways. The fluid, along with cells from the lung, is suctioned back for analysis.

13 services13 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

13 services13 patients

Hospital Affiliations CMS Care Compare 5

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

Natchitoches Regional Medical Center

Acute Care Hospitals · Natchitoches, LA

3/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number190007

Location501 Keyser AveNatchitoches, LA 71457 · Natchitoches County

Emergency services Birthing friendly

Ochsner Lsu Health Monroe

Acute Care Hospitals · Monroe, LA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number190011

Location4864 Jackson StreetMonroe, LA 71202 · Ouachita County

Emergency services Birthing friendly

Ochsner Lsu Health Shreveport

Acute Care Hospitals · Shreveport, LA

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number190098

Location1541 Kings HighwayShreveport, LA 71103 · Caddo County

Emergency services Birthing friendly

Willis Knighton Medical Center

Acute Care Hospitals · Shreveport, LA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number190111

Location2600 Greenwood RoadShreveport, LA 71103 · Caddo County

Emergency services Birthing friendly

Ochsner Lsu Health Shreveport-St Mary Medical Cent

Acute Care Hospitals · Shreveport, LA

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number190317

Location911 Margaret PlaceShreveport, LA 71101 · Caddo County

Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 71104 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

$124.60 typical visit price

range $53.43 – $164.73

Typical copayment $31.15 (range $13.35 – $41.18)

Most-billed visit code 99204

Established Patient

$95.09 typical visit price

range $16.64 – $133.62

Typical copayment $23.77 (range $4.16 – $33.40)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 14

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tubing with integrated heating element for use with positive airway pressure device A4604

DME-Other DME · category DE001N

2 suppliers11 claims11 services$41.35 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

4 suppliers11 claims11 services$20.66 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

4 suppliers16 claims93 services$2.62 avg. paid by Medicare

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

7 suppliers84 claims85 services$16.27 avg. paid by Medicare

Portable oxygen contents, gaseous, 1 month's supply = 1 unit E0443

DME-Oxygen and Supplies · category DC000N

1 supplier17 claims17 services$40.64 avg. paid by Medicare

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466

DME-Other DME · category DE005N

1 supplier24 claims24 services$815.49 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

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

IOANNIS A. MOISSIDIS MD

Allergy & Immunology

850 OLIVE ST, SUITE B
SHREVEPORT, LA 71104

Caddo Parish (318) 221-3584

PULMONARY MEDICINE ASSOCIATES

Internal Medicine (Pulmonary Disease)

850 OLIVE ST, SUITE A
SHREVEPORT, LA 71104

Caddo Parish (318) 222-3662

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 Robert Holladay's NPI number?

The NPI number for Robert Holladay is 1124023668. It was assigned to this individual provider in the NPPES registry on June 20, 2005.

Where is Robert Holladay located?

Robert Holladay practices at 850 Olive St Ste A, Shreveport, LA 71104. The listed phone number is (318) 222-3662.

What is Robert Holladay's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Robert Holladay enrolled in Medicare?

Yes. Robert Holladay 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 Robert Holladay's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robert Holladay reassigns Medicare benefits to 2 organizations: Lsu Health Sciences Center Shreveport Faculty Group Practice (Shreveport, LA) and Nrmc Physician Ipa Inc (Natchitoches, LA). 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 Robert Holladay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Robert Holladay accept?

Health plans from Blue Cross and Blue Shield of Louisiana, CHRISTUS Health Plan and HMO Louisiana list Robert Holladay 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 Robert Holladay affiliated with any hospitals?

According to CMS data, Robert Holladay is affiliated with Natchitoches Regional Medical Center, Ochsner Lsu Health Monroe, Ochsner Lsu Health Shreveport, Willis Knighton Medical Center and Ochsner Lsu Health Shreveport-St Mary Medical Cent.

When was this NPI record last updated?

The NPPES record for Robert Holladay was last updated on February 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.