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

Q: 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.

Q: What is Maryann Deleon's specialty?

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

Q: 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 46 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.

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 25, 2026.

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

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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

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Other Identifiers 1

Other036098323IL · Il State Lic

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

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.

Medicare Billing Reassignment

Medicare enrollment records show Maryann Deleon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Swedish Covenant Management Services, Inc

15 mi

Emergency Medicine

5140 N CALIFORNIA AVE
Chicago, IL 60625

Reassigned Medicare billing, Illinois enrollment
350 clinicians in this Medicare group

NPI 1962049551 (847) 570-2040

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

Which organization bills Medicare for Maryann Deleon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Maryann Deleon reassigns Medicare benefits to Swedish Covenant Management Services, Inc (Chicago, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Maryann Deleon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

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 46 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.