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NATHANIEL I COSTIN MD
NPI 1598468530
Hospitalist in Chicago, IL

Active since March 27, 2023PECOS EnrolledAccepts Medicare Assignment
251 E HURON ST STE 16-738, CHICAGO, IL 60611(312) 926-5924(312) 926-6134 Get Directions Write a Review

NPPES record last updated: August 28, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 28, 2026, Mar 27, 2023 (2 updates tracked since 2023).

About Nathaniel I Costin Md NPPES

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

NATHANIEL I COSTIN MD (NPI 1598468530) is an individual hospitalist provider in Chicago, Illinois, licensed in Illinois (036180991) and active in the NPI registry since March 2023. He is enrolled in Medicare PECOS, maintains a secondary practice location in Hackensack, and is a graduate of Hackensack Meridian School Of Med At Seton Hall (2023).

NPPES Registry Identity

NPI1598468530
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameNATHANIEL I COSTINCredential: MD
Location Address251 E HURON ST STE 16-738Chicago, IL 60611-3055
Mailing Address30 Prospect AveHackensack, NJ 07601-1915
Phone(312) 926-5924
Fax(312) 926-6134
Sole ProprietorNo
Medical School CMSHackensack Meridian School Of Med At Seton HallGraduated 2023
Enumeration DateMarch 27, 2023
Last NPPES UpdateAugust 28, 20262 updates tracked since enumeration
NPPES CertifiedAugust 28, 2026
✔ NPI 1598468530 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 · 036180991
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 ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
251 E HURON ST STE 16-738, Chicago, IL 60611
Open in Google Maps ↗

Secondary Practice Location 1

Location 130 Prospect AveHackensack, NJ 07601-1915 · Phone (551) 996-2000

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Nathaniel I Costin Md 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 ID7618436924
PECOS Enrollment IDI20260827000997
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 Nathaniel Costin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Northwestern Medical Faculty Foundation
34 mi
Multi-Specialty
DEPT 5777
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 4,817 clinicians in this Medicare group
NPI 1346235314 (855) 694-2866

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 60611 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
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
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.

AISHA T AMUDA
Hospitalist
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
DR. PETER SOOHOON PARK MD
Hospitalist
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
JEFFREY MERZ M.D.
Hospitalist
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
RITIKA DHAWAN
Hospitalist
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
MRS. MARGARET CANTARA SCHIFFHAUER
Physician Assistant
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
JACK CARTER PA-C
Physician Assistant
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
DAVE U SONI MD
Hospitalist
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924
DR. JUAN P ALBAN MD
Internal Medicine (Hematology & Oncology)
251 E HURON ST STE 16-738
CHICAGO, IL 60611
Cook County (312) 926-5924

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 Nathaniel Costin's NPI number?

The NPI number for Nathaniel Costin is 1598468530. It was assigned to this individual provider in the NPPES registry on March 27, 2023.

Where is Nathaniel Costin located?

Nathaniel Costin practices at 251 E Huron St Ste 16-738, Chicago, IL 60611. The listed phone number is (312) 926-5924.

What is Nathaniel Costin's specialty?

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

Is Nathaniel Costin enrolled in Medicare?

Yes. Nathaniel Costin 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.

Which organization bills Medicare for Nathaniel Costin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel Costin reassigns Medicare benefits to Northwestern Medical Faculty Foundation (Carol Stream, 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 Nathaniel Costin'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 Nathaniel Costin was last updated on August 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 60 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.