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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARYANN DELEON MD
NPI 1982786091
Hospitalist in Highland Park, IL

Active since October 19, 2006PECOS Enrolled
777 PARK AVE W, HIGHLAND PARK, IL 60035(847) 926-5840(847) 926-5835 Get Directions Write a Review

NPPES record last updated: September 14, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Sep 14, 2026, Mar 31, 2021 (2 updates tracked since 2021).

About Maryann Deleon Md NPPES

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

MARYANN DELEON MD (NPI 1982786091) is an individual hospitalist provider in Highland Park, Illinois, licensed in Illinois (036098323) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1982786091
Entity TypeIndividualFemale
Primary Taxonomy208M00000X
Provider Legal NameMARYANN DELEONCredential: MD
Location Address777 PARK AVE WHighland Park, IL 60035-2433
Mailing Address2650 Ridge Ave Ste 1223Evanston, IL 60201-1700 · (847) 570-2040 · Fax (847) 733-5315
Phone(847) 926-5840
Fax(847) 926-5835
Sole ProprietorNo
Enumeration DateOctober 19, 2006
Last NPPES UpdateSeptember 14, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 14, 2026
✔ NPI 1982786091 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 · 036098323
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 ListedPediatricsTaxonomy 208000000X · License 036098323 (IL)
777 PARK AVE W, Highland Park, IL 60035
Open in Google Maps ↗

Other Identifiers 1

Other036098323IL · Il State Lic

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Maryann Deleon 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60035 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.

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.

RUBY G. GUBAT CNS
Clinical Nurse Specialist
777 PARK AVE W, EP LAB, RM 1111
HIGHLAND PARK, IL 60035
Lake County (847) 480-2641
MRS. JENNIFER B RIFIS-MENG OTR/L
Occupational Therapist (Hand)
777 PARK AVE W
HIGHLAND PARK, IL 60035
Lake County (847) 480-3920
LAURA ANN CUMBY MA CCC-SLP
Speech-Language Pathologist
777 PARK AVE W, ROOM 2102
HIGHLAND PARK, IL 60035
Lake County (847) 480-3920
OLIVIA KATHRYN MASON PA-C
Physician Assistant (Surgical)
777 PARK AVE W
HIGHLAND PARK, IL 60035
Lake County (847) 432-9000
REBECCA F NISHIMOTO PA-C
Physician Assistant (Surgical)
777 PARK AVE W
HIGHLAND PARK, IL 60035
Lake County (847) 926-5844
MS. IRIS NUNAG PA-C
Physician Assistant
777 PARK AVE W, DEPARTMENT OF SURGERY
HIGHLAND PARK, IL 60035
Lake County (847) 926-5844
EMILY ANNE KOHLER PA-C
Physician Assistant
777 PARK AVE W
HIGHLAND PARK, IL 60035
Lake County (847) 432-8000
ANGELA MARIE PECORA PA-C
Physician Assistant (Surgical)
777 PARK AVE W
HIGHLAND PARK, IL 60035
Lake County (847) 432-8000

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 Maryann Deleon's NPI number?

The NPI number for Maryann Deleon is 1982786091. It was assigned to this individual provider in the NPPES registry on October 19, 2006.

Where is Maryann Deleon located?

Maryann Deleon practices at 777 Park Ave W, Highland Park, IL 60035. The listed phone number is (847) 926-5840.

What is Maryann Deleon's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Maryann Deleon enrolled in Medicare?

Yes. Maryann Deleon is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Maryann Deleon was last updated on September 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days 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.