DR. AVA MASTNY M.D.
NPI 1164868691
Hospitalist in Long Grove, IL

Active since May 10, 2013PECOS EnrolledAccepts Medicare Assignment
3880 SALEM LAKE DR, F, LONG GROVE, IL 60047(847) 719-2220(847) 719-2265 Get Directions Write a Review

NPPES record last updated: June 17, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jun 17, 2025, Mar 7, 2023, Dec 20, 2021 and 1 more (4 updates tracked since 2016).

About Dr. Ava Mastny M.d. NPPES

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

DR. AVA MASTNY M.D. (NPI 1164868691) is an individual hospitalist provider in Long Grove, Illinois, licensed in Illinois (036139860) and active in the NPI registry since May 2013. She is enrolled in Medicare PECOS, is affiliated with Advocate Christ Hospital & Medical Center, and is a graduate of Other (2012).

NPPES Registry Identity

NPI1164868691
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameDR. AVA MASTNYCredential: M.D.
Location Address3880 SALEM LAKE DR, FLong Grove, IL 60047-5292
Mailing Address3880 Salem Lake Dr, FLong Grove, IL 60047-5292 · (847) 719-2220 · Fax (847) 719-2265
Fax(847) 719-2265
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateMay 10, 2013
Last NPPES UpdateJune 17, 20254 updates tracked since enumeration
NPPES CertifiedJune 17, 2025
NPI 1164868691 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License Licensed in IL · 036139860
Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedInternal MedicineTaxonomy 207R00000X · License 036139860 (IL)
3880 SALEM LAKE DR, Long Grove, IL 60047

Other Identifiers 1

Medicaid1164868691IL

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. Ava Mastny 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 ID8325338874
PECOS Enrollment IDI20160613000713
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 5

Services this provider delivered to Medicare fee-for-service patients, from the 2024 & 2026 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.
420 services132 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
115 services109 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.
79 services77 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.
51 services33 patients
Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180
This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.
19 services19 patients

Hospital Affiliations CMS Care Compare

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

Advocate Christ Hospital & Medical Center

Acute Care Hospitals · Oak Lawn, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140208
Location4440 W 95th StreetOak Lawn, IL 60453 · Cook County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60047 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
$137.43 typical visit price
range $59.81 – $181.38
Typical copayment $34.35 (range $14.95 – $45.34)
Most-billed visit code 99204
Established Patient
$105.07 typical visit price
range $19.15 – $147.12
Typical copayment $26.26 (range $4.78 – $36.78)
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 2

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

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier19 claims19 services$13.08 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
1 supplier19 claims19 services$56.12 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 20

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

Internal Medicine
3880 SALEM LAKE DR, STE F
LONG GROVE, IL 60047
Internal Medicine
3880 SALEM LAKE DR, F
LONG GROVE, IL 60047
Physician Assistant (Medical)
3880 SALEM LAKE DR, F
LONG GROVE, IL 60047
Internal Medicine
3880 SALEM LAKE DR, STE F
LONG GROVE, IL 60047
Internal Medicine
3880 SALEM LAKE DR, F
LONG GROVE, IL 60047
Nurse Practitioner
3880 SALEM LAKE DR, STE F
LONG GROVE, IL 60047
Internal Medicine
3880 SALEM LAKE DR, STE F
LONG GROVE, IL 60047
Internal Medicine
3880 SALEM LAKE DR, STE F
LONG GROVE, IL 60047

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1164868691, enumerated as an "individual" on May 10, 2013.

The provider is located at 3880 SALEM LAKE DR F LONG GROVE, IL 60047 and the phone number is (847) 719-2220.

Hospitalist with taxonomy code 208M00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.

Ava Mastny is affiliated with: ADVOCATE CHRIST HOSPITAL & MEDICAL CENTER.