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DR. LESLIE E. MEZEI M.D.
NPI 1992800429
Internal Medicine - Cardiovascular Disease in Saint Louis, MO

Active since September 13, 2006PECOS EnrolledAccepts Medicare Assignment
56.77/100
CMS Quality Rating
139 N CENTRAL AVE APT D, SAINT LOUIS, MO 63105(314) 486-1396(314) 485-3520 Get Directions Write a Review

NPPES record last updated: October 20, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Leslie E. Mezei M.d. NPPES

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

DR. LESLIE E. MEZEI M.D. (NPI 1992800429) is an individual cardiovascular disease provider in Saint Louis, Missouri, licensed in Missouri (R3E74) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and is a graduate of Other (1982).

NPPES Registry Identity

NPI1992800429
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. LESLIE E. MEZEICredential: M.D.
Location Address139 N CENTRAL AVE APT DSaint Louis, MO 63105-3800
Mailing Address139 N Central Ave Apt DSaint Louis, MO 63105-3800 · (314) 486-1396 · Fax (314) 485-3520
Phone(314) 486-1396
Fax(314) 485-3520
Sole ProprietorNo
Medical School CMSOtherGraduated 1982
Enumeration DateSeptember 13, 2006
Last NPPES UpdateOctober 20, 2021
NPPES CertifiedOctober 20, 2021
✔ NPI 1992800429 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in MO · R3E74
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
139 N CENTRAL AVE APT D, Saint Louis, MO 63105
Open in Google Maps ↗

Other Identifiers 10

Other4061166MO · Aetna
OtherSTL2500039MO · United Healthcare
Other254499MO · Healthlink
OtherSTM2500039MO · Uhc Medicare Complete
Other161200MO · Blue Shield
Medicaid202528048MO
Other060069533MO · Railroad Medicare
Other125578MO · Group Health Plan
Other161200MO · Blue Choice
OtherA13364MO · Mercy Health Plan

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. Leslie E. Mezei 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 ID840344107
PECOS Enrollment IDI20091103000404
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 2

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 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.
3,340 services313 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.
372 services312 patients

Hospital Affiliations CMS Care Compare 5

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

Mercy Hospital St Louis

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260020
Location615 New Ballas RoadSaint Louis, MO 63141 · St. Louis County
Emergency services Birthing friendly

Barnes Jewish Hospital

Acute Care Hospitals · Saint Louis, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number260032
LocationOne Barnes-Jewish Hospital PlazaSaint Louis, MO 63110 · St. Louis City County
Emergency services Birthing friendly

Mercy Hospital South

Acute Care Hospitals · Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260077
Location10010 Kennerly RoadSaint Louis, MO 63128 · St. Louis County
Emergency services

Missouri Baptist Medical Center

Acute Care Hospitals · Town And Country, MO
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260108
Location3015 N Ballas RdTown And Country, MO 63131 · St. Louis County
Emergency services Birthing friendly

St Lukes Hospital

Acute Care Hospitals · Chesterfield, MO
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260179
Location232 S Woods Mill RdChesterfield, MO 63017 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63105 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
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
Most-billed visit code 99213
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.

56.77/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality82.04
Improvement Activities0
Cost63.17

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 Leslie Mezei's NPI number?

The NPI number for Leslie Mezei is 1992800429. It was assigned to this individual provider in the NPPES registry on September 13, 2006.

Where is Leslie Mezei located?

Leslie Mezei practices at 139 N Central Ave Apt D, Saint Louis, MO 63105. The listed phone number is (314) 486-1396.

What is Leslie Mezei's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Leslie Mezei enrolled in Medicare?

Yes. Leslie Mezei 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.

Is Leslie Mezei affiliated with any hospitals?

According to CMS data, Leslie Mezei is affiliated with Mercy Hospital St Louis, Barnes Jewish Hospital, Mercy Hospital South, Missouri Baptist Medical Center and St Lukes Hospital.

When was this NPI record last updated?

The NPPES record for Leslie Mezei was last updated on October 20, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.