DR. ZACHARY BERG M.D.
NPI 1255741278
Internal Medicine - Pulmonary Disease in O Fallon, IL

Q: What is Zachary Berg's NPI number?

The NPI number for Zachary Berg is 1255741278. It was assigned to this individual provider in the NPPES registry on April 29, 2014.

Q: What is Zachary Berg'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 Zachary Berg was last updated on July 1, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since April 29, 2014PECOS EnrolledAccepts Medicare Assignment

94.61/100

CMS Quality Rating

3 SAINT ELIZABETH BLVD STE 5000, O FALLON, IL 62269(618) 641-5803 Get Directions Write a Review

NPPES record last updated: July 1, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 1, 2020, May 7, 2020 (2 updates tracked since 2020).

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About Dr. Zachary Berg M.d. NPPES

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

DR. ZACHARY BERG M.D. (NPI 1255741278) is an individual pulmonary disease provider in O Fallon, Illinois, licensed in Illinois (036150902) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with St Johns Hospital, and is a graduate of University Of Missouri, Columbia School Of Medicine (2014).

NPPES Registry Identity

NPI1255741278

Entity TypeIndividualMale

Primary Taxonomy207RP1001X

Provider Legal NameDR. ZACHARY BERGCredential: M.D.

Location Address3 SAINT ELIZABETH BLVD STE 5000O Fallon, IL 62269-1282

Mailing Address3 Saint Elizabeth Blvd Ste 5000O Fallon, IL 62269-1282 · (618) 641-5803

Phone(618) 641-5803

Sole ProprietorNo

Medical School CMSUniversity Of Missouri, Columbia School Of MedicineGraduated 2014

Enumeration DateApril 29, 2014

Last NPPES UpdateJuly 1, 20202 updates tracked since enumeration

NPPES CertifiedJuly 1, 2020

✔ NPI 1255741278 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RP1001X

License✔ Licensed in IL · 036150902

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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

3 SAINT ELIZABETH BLVD STE 5000, O Fallon, IL 62269

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Zachary Berg 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 ID3375762198

PECOS Enrollment IDI20200512003680

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.

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.

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.

508 services350 patients

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.

220 services80 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.

157 services156 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.

156 services155 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.

155 services154 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.

92 services50 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.

78 services77 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.

77 services75 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.

74 services74 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.

70 services62 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.

43 services38 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.

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.

St Johns Hospital

Acute Care Hospitals · Springfield, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140053

Location800 E Carpenter StSpringfield, IL 62769 · Sangamon County

Emergency services Birthing friendly

Hshs Holy Family Hospital Inc

Acute Care Hospitals · Greenville, IL

OwnershipVoluntary non-profit - Church

CMS Certification Number140137

Location200 Health Care DrGreenville, IL 62246 · Bond County

Emergency services

St Josephs Hospital

Acute Care Hospitals · Breese, IL

OwnershipVoluntary non-profit - Church

CMS Certification Number140145

Location9515 Holy Cross LnBreese, IL 62230 · Clinton County

Emergency services Birthing friendly

Memorial Hospital

Acute Care Hospitals · Belleville, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140185

Location4500 Memorial DriveBelleville, IL 62226 · St. Clair County

Emergency services Birthing friendly

Hshs St Elizabeth's Hospital

Acute Care Hospitals · O Fallon, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140187

LocationOne St Elizabeth BoulevardO Fallon, IL 62269 · St. Clair County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62269 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

$131.14 typical visit price

range $56.28 – $173.35

Typical copayment $32.78 (range $14.07 – $43.33)

Most-billed visit code 99204

Established Patient

$99.71 typical visit price

range $17.51 – $139.99

Typical copayment $24.92 (range $4.37 – $34.99)

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.

94.61/100

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

Scored through an Alternative Payment Model

Quality

85.17

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 25

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

5 suppliers189 claims189 services$33.21 avg. paid by Medicare

Full face mask used with positive airway pressure device, each A7030

DME-Other DME · category DE001N

8 suppliers178 claims178 services$78.86 avg. paid by Medicare

Face mask interface, replacement for full face mask, each A7031

DME-Other DME · category DE001N

8 suppliers159 claims438 services$29.57 avg. paid by Medicare

Cushion for use on nasal mask interface, replacement only, each A7032

DME-Other DME · category DE001N

5 suppliers64 claims349 services$16.46 avg. paid by Medicare

Pillow for use on nasal cannula type interface, replacement only, pair A7033

DME-Other DME · category DE001N

7 suppliers66 claims378 services$12.78 avg. paid by Medicare

Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034

DME-Other DME · category DE001N

7 suppliers145 claims145 services$48.14 avg. paid by Medicare

Headgear used with positive airway pressure device A7035

DME-Other DME · category DE001N

9 suppliers181 claims181 services$15.24 avg. paid by Medicare

Chinstrap used with positive airway pressure device A7036

DME-Other DME · category DE001N

3 suppliers22 claims22 services$8.33 avg. paid by Medicare

Tubing used with positive airway pressure device A7037

DME-Other DME · category DE001N

8 suppliers116 claims116 services$10.67 avg. paid by Medicare

Filter, disposable, used with positive airway pressure device A7038

DME-Other DME · category DE001N

10 suppliers265 claims1,501 services$1.79 avg. paid by Medicare

Filter, non disposable, used with positive airway pressure device A7039

DME-Other DME · category DE001N

4 suppliers28 claims28 services$5.22 avg. paid by Medicare

Water chamber for humidifier, used with positive airway pressure device, replacement, each A7046

DME-Other DME · category DE001N

7 suppliers118 claims118 services$11.21 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

4 suppliers78 claims78 services$15.13 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 suppliers13 claims13 services$529.64 avg. paid by Medicare

Respiratory assist device, bi-level pressure capability, without backup rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0470

DME-Other DME · category DE001N

3 suppliers32 claims32 services$68.75 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

5 suppliers49 claims49 services$111.80 avg. paid by Medicare

Humidifier, heated, used with positive airway pressure device E0562

DME-Other DME · category DE001N

4 suppliers53 claims55 services$9.94 avg. paid by Medicare

Nebulizer, with compressor E0570

DME-Other DME · category DE000N

4 suppliers30 claims30 services$3.25 avg. paid by Medicare

Continuous positive airway pressure (cpap) device E0601

DME-Other DME · category DE001N

7 suppliers443 claims446 services$28.10 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

6 suppliers194 claims194 services$67.50 avg. paid by Medicare

Portable oxygen concentrator, rental E1392

DME-Oxygen and Supplies · category DC002N

6 suppliers56 claims56 services$30.15 avg. paid by Medicare

Albuterol, inhalation solution, fda-approved final product, non-compounded, administered through dme, unit dose, 1 mg J7613

DME-Drugs Administered Through DME · category DG006N

5 suppliers20 claims4,588 services$0.03 avg. paid by Medicare

Albuterol, up to 2.5 mg and ipratropium bromide, up to 0.5 mg, fda-approved final product, non-compounded, administered through dme J7620

DME-Drugs Administered Through DME · category DG006N

2 suppliers11 claims1,020 services$0.09 avg. paid by Medicare

Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing K0738

DME-Oxygen and Supplies · category DC000N

2 suppliers56 claims56 services$31.72 avg. paid by Medicare

Pharmacy dispensing fee for inhalation drug(s); per 30 days Q0513

DME-Other DME · category DE000N

6 suppliers31 claims31 services$24.36 avg. paid by Medicare

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

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Other Providers at the Same Location NPPES 11

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

MS. ANGELA N CROESSMAN-MARSHALL AGNP-C

Nurse Practitioner (Adult Health)

3 SAINT ELIZABETH BLVD STE 5000
O FALLON, IL 62269

St. Clair County (618) 641-5803

ROULA AL-DAHHAK M.D.

Psychiatry & Neurology (Neurology)

3 SAINT ELIZABETH BLVD STE 5000
O FALLON, IL 62269

St. Clair County (618) 641-5803

ELAYNA LEAH TEMARES FNP-BC

Nurse Practitioner

3 SAINT ELIZABETH BLVD STE 5000
O FALLON, IL 62269

St. Clair County (618) 641-5803

JENNIFER SCHAEFER APN

Nurse Practitioner (Family)

3 SAINT ELIZABETH BLVD STE 5000
O FALLON, IL 62269

St. Clair County (618) 641-5803

SPENCER PHILIP SHOLL

Physician Assistant

3 SAINT ELIZABETH BLVD STE 5000
O FALLON, IL 62269

St. Clair County (618) 641-5803

ADAKU MENNWA UZO-OKEREKE M.D.

Psychiatry & Neurology (Neurology)

3 SAINT ELIZABETH BLVD STE 5000
O FALLON, IL 62269

St. Clair County (618) 641-5803

RANDALL E DOOLEY MD

Urology

3 SAINT ELIZABETH BLVD STE 5000
O FALLON, IL 62269

St. Clair County (618) 641-5803

DR. BASSIM ASSIOUN M.D.

Internal Medicine (Nephrology)

3 SAINT ELIZABETH BLVD STE 5000
O FALLON, IL 62269

St. Clair County (618) 641-5803

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 Zachary Berg's NPI number?

The NPI number for Zachary Berg is 1255741278. It was assigned to this individual provider in the NPPES registry on April 29, 2014.

Where is Zachary Berg located?

Zachary Berg practices at 3 Saint Elizabeth Blvd Ste 5000, O Fallon, IL 62269. The listed phone number is (618) 641-5803.

What is Zachary Berg's specialty?

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

Is Zachary Berg enrolled in Medicare?

Yes. Zachary Berg 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.

What insurance does Zachary Berg accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health and UnitedHealthcare list Zachary Berg 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 Zachary Berg affiliated with any hospitals?

According to CMS data, Zachary Berg is affiliated with St Johns Hospital, Hshs Holy Family Hospital Inc, St Josephs Hospital, Memorial Hospital and Hshs St Elizabeth's Hospital.

When was this NPI record last updated?

The NPPES record for Zachary Berg was last updated on July 1, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.