What is Walter Gruber's specialty?

Walter Gruber (NPI 1164440277) is a Medicare-billing provider whose primary specialty is Internal Medicine in Midland, MI.

Where does Walter Gruber practice?

Walter Gruber practices in Midland, MI, based on the location reported in the CMS Medicare provider datasets for NPI 1164440277.

How much does Medicare pay Walter Gruber?

Walter Gruber (NPI 1164440277) received approximately $17K in total Medicare Part B payments, serving 128 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1164440277

Walter GruberM.D.

Internal MedicineMidland, MII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

246

Unique beneficiaries

—

Total services

261

Distinct HCPCS

Medicare payment

$13K

Peer benchmark

Total Medicare services vs. 3,459 Internal Medicine providers in MI — below median (cohort median 549).

PRESCRIBING · PART D · 2024

Total Rx claims

5,759

Beneficiaries

—

Total drug cost

$505K

Distinct drugs

106

Brand share

19.8%

Top prescribed drugs

Atorvastatin Calcium395 claims

Losartan Potassium318 claims

Amlodipine Besylate247 claims

Levothyroxine Sodium242 claims

Lisinopril232 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 Walter Gruber'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). 24 inbound referrers · 43 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
MYMICHIGAN MEDICAL CENTER MIDLAND	52	201
Christopher Nall Diagnostic Radiology · Ann Arbor, MI	49	168
Lindsay Zeeb Diagnostic Radiology · Ann Arbor, MI	40	86
Stephen Pavlock Diagnostic Radiology · Midland, MI	39	139
Robert Genovese Cardiology · Midland, MI	34	146
Vincent Dimerc Diagnostic Radiology · Midland, MI	31	67
MYMICHIGAN MEDICAL CENTER GLADWIN	25	117
Opesanmi Esan Clinical Cardiac Electrophysiology · Midland, MI	24	150
John Blamoun Pulmonary Disease · Midland, MI	21	98
Nps Associates, Llc Ambulatory Surgical Center · Midland, MI	20	38
QUEST DIAGNOSTICS INCORPORATED MI	19	63
REGENTS OF THE UNIVERSITY OF MICHIGAN	16	49

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
MYMICHIGAN MEDICAL CENTER MIDLAND	494	4,003
Lindsay Zeeb Diagnostic Radiology · Ann Arbor, MI	67	186
Gregory Parish Diagnostic Radiology · Eden Prairie, MN	63	207
MYMICHIGAN MEDICAL CENTER MIDLAND	60	222
HERMAN, JEFFREY	60	183
Susan Sallach Cardiology · Midland, MI	44	154
Timothy Berka Diagnostic Radiology · Midland, MI	36	107
Robert Genovese Cardiology · Midland, MI	34	145
MYMICHIGAN MEDICAL CENTER GLADWIN	33	202
Vincent Dimerc Diagnostic Radiology · Midland, MI	30	83
Christopher Nall Diagnostic Radiology · Ann Arbor, MI	30	69
Nps Associates, Llc Ambulatory Surgical Center · Midland, MI	26	54

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