DR. CHRISTOPHER LEIGH JOHN MD
NPI 1619974599
Internal Medicine - Critical Care Medicine in Little Rock, AR

Q: What is Christopher John's NPI number?

The NPI number for Christopher John is 1619974599. It was assigned to this individual provider in the NPPES registry on July 7, 2005.

Q: What is Christopher John's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.

Q: When was this NPI record last updated?

The NPPES record for Christopher John was last updated on July 20, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.

Active since July 07, 2005PECOS Enrolled

60.14/100

CMS Quality Rating

11321 INTERSTATE 30, STE 306, LITTLE ROCK, AR 72209(501) 407-0200(501) 407-0220 Get Directions Write a Review

NPPES record last updated: July 20, 2010. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Christopher Leigh John Md NPPES

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

DR. CHRISTOPHER LEIGH JOHN MD (NPI 1619974599) is an individual critical care medicine provider in Little Rock, Arkansas, licensed in Arkansas (E2644) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1619974599

Entity TypeIndividualMale

Primary Taxonomy207RC0200X

Provider Legal NameDR. CHRISTOPHER LEIGH JOHNCredential: MD

Location Address11321 INTERSTATE 30, STE 306Little Rock, AR 72209-7067

Mailing Address11321 Interstate 30, Ste 306Little Rock, AR 72209-7067 · (501) 407-0200 · Fax (501) 407-0220

Phone(501) 407-0200

Fax(501) 407-0220

Sole ProprietorYes

Enumeration DateJuly 7, 2005

Last NPPES UpdateJuly 20, 2010

✔ NPI 1619974599 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Critical Care MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207RC0200X

Licenses✔ Licensed in AR · E2644✔ Licensed in AR · E6244

Definition

An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.

Also ListedInternal MedicineTaxonomy 207R00000X · License E2644 (AR)

11321 INTERSTATE 30, Little Rock, AR 72209

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Other Identifiers 6

Medicaid140774001AK

Medicare ID-Type Unspecified5L554

Other4823006United Hc

Other110209691Railroad Mc

Medicare UPINF93680

Other4548106Actna

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan 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 (PECOS)

Dr. Christopher Leigh John 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 Christopher John reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Christopher L. John

Same address

Specialist

11321 INTERSTATE 30, SUITE 306
Little Rock, AR 72209

Reassigned Medicare billing, Arkansas enrollment
2 clinicians in this Medicare group

NPI 1841472149 (501) 407-0200

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 14

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.

Methacholine chloride administered as inhalation solution through a nebulizer, per 1 mg J7674

Methacholine chloride is a medication given through a nebulizer as an inhalation solution. It's used to check how responsive or sensitive your lungs are, often to diagnose conditions like asthma. You'll inhale it, and your lung function will be monitored.

1,200 services12 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.

750 services436 patients

Test to measure expiratory airflow and volume changes before and after medication administration 94060

This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.

703 services446 patients

Test to examine how well the lungs exchange gases 94729

This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.

365 services323 patients

Test to determine lung volumes using sensors 94726

This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.

322 services289 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.

211 services175 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

205 services178 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.

109 services109 patients

Test to measure expiratory airflow and volume 94010

This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.

89 services81 patients

Test for exercise-induced heart and lung stress 94621

This is a test to evaluate how your heart and lungs respond to physical exertion. You'll exercise on a treadmill or a stationary bike, while your heart rate, breathing, blood pressure, and fatigue levels are monitored. This helps identify any abnormal responses to physical activity.

45 services45 patients

Test for exercise-induced lung stress 94618

An exercise-induced lung stress test assesses how your lungs respond to physical activity. During the test, you'll exercise on a treadmill or stationary bike while your heart rate, breathing, blood pressure, and oxygen levels are monitored. This helps identify any abnormal lung responses to exercise.

23 services22 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

21 services21 patients

X-ray of paranasal sinus, 1-2 views 70210

An X-ray of the paranasal sinus is a safe, quick imaging procedure. It uses a small amount of radiation to create images of the sinus cavities in your face. This helps doctors diagnose conditions such as sinusitis or other sinus problems. The 1-2 views mean images from one or two different angles will be taken.

11 services11 patients

Test to measure lung airway sensitivity 94070

This procedure, called a Bronchial Challenge Test, evaluates how sensitive your lungs are to substances that may cause asthma symptoms. You'll inhale a certain substance, and then your lung function is measured. It aids in diagnosing and managing asthma.

11 services11 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 72209 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

$119.36 typical visit price

range $51.36 – $157.74

Typical copayment $29.84 (range $12.84 – $39.43)

Most-billed visit code 99204

Established Patient

$91.63 typical visit price

range $16.16 – $128.77

Typical copayment $22.90 (range $4.04 – $32.19)

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.

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.

60.14/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

Improvement Activities

Cost

62.35

Referred Medical Equipment & Supplies CMS DME claims 18

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

Administration set, with small volume nonfiltered pneumatic nebulizer, disposable A7003

DME-Other DME · category DE000N

6 suppliers53 claims104 services$1.32 avg. paid by Medicare

Administration set, with small volume nonfiltered pneumatic nebulizer, non-disposable A7005

DME-Other DME · category DE000N

8 suppliers18 claims18 services$13.01 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

11 suppliers205 claims212 services$15.00 avg. paid by Medicare

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

DME-Oxygen and Supplies · category DC000N

4 suppliers31 claims31 services$44.53 avg. paid by Medicare

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

DME-Other DME · category DE005N

2 suppliers22 claims22 services$900.28 avg. paid by Medicare

High frequency chest wall oscillation system, with full anterior and/or posterior thoracic region receiving simultaneous external oscillation, includes all accessories and supplies, each E0483

DME-Other DME · category DE000N

2 suppliers16 claims16 services$912.10 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

6 suppliers121 claims121 services$4.16 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

24 suppliers737 claims744 services$71.65 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

8 suppliers207 claims207 services$32.86 avg. paid by Medicare

Arformoterol, inhalation solution, fda approved final product, non-compounded, administered through dme, unit dose form, 15 micrograms J7605