What is Katherine Granberry's specialty?

Katherine Granberry (NPI 1881612471) is a Medicare-billing provider whose primary specialty is Internal Medicine in Chicago, IL.

Where does Katherine Granberry practice?

Katherine Granberry practices in Chicago, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1881612471.

How much does Medicare pay Katherine Granberry?

Katherine Granberry (NPI 1881612471) received approximately $32K in total Medicare Part B payments, serving 236 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1881612471

Katherine GranberryM.D.

PRACTICEADVOCATE HEALTHCARE SYSTEMS INCSee all providers at this practice →

Internal MedicineChicago, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

422

Unique beneficiaries

—

Total services

435

Distinct HCPCS

Medicare payment

$32K

Peer benchmark

Total Medicare services vs. 3,790 Internal Medicine providers in IL — below median (cohort median 760).

PRESCRIBING · PART D · 2024

Total Rx claims

614

Beneficiaries

—

Total drug cost

$17K

Distinct drugs

Brand share

7.2%

Top prescribed drugs

Azithromycin118 claims

Prednisone110 claims

Meloxicam101 claims

Cephalexin85 claims

Amoxicillin44 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Katherine Granberry's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 9 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Robert Grossett Diagnostic Radiology · Saint Paul, MN	41	101
WEBB, KENT	35	91
MEYERS, CAROL	17	51
Grace Lee Diagnostic Radiology · Chicago, IL	17	46
Laura Mcintyre Family Practice · Chicago, IL	15	29
Angel Castaner Cardiology · Harvey, IL	13	26
Shana Landau Diagnostic Radiology · Duarte, CA	13	35
Brian Ruiz De Luzuriaga Diagnostic Radiology · Kankakee, IL	12	31
Dilip Shah Internal Medicine · Homewood, IL	12	31

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events