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DR. WALTER J GRUBER M.D.
NPI 1164440277
Internal Medicine in Midland, MI

Active since July 17, 2006PECOS Enrolled
555 W WACKERLY STREET, SUITE 1500, MIDLAND, MI 48640(989) 631-8300(989) 839-8170 Get Directions Write a Review

NPPES record last updated: October 26, 2011. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Walter J Gruber M.d. NPPES

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

DR. WALTER J GRUBER M.D. (NPI 1164440277) is an individual internal medicine provider in Midland, Michigan, licensed in Michigan (WG038289) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1164440277
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WALTER J GRUBERCredential: M.D.
Location Address555 W WACKERLY STREET, SUITE 1500Midland, MI 48640-4712
Mailing Address555 W Wackerly St, Suite 1500Midland, MI 48640-4722 · (989) 631-8300 · Fax (989) 839-8170
Phone(989) 631-8300
Fax(989) 839-8170
Sole ProprietorYes
Enumeration DateJuly 17, 2006
Last NPPES UpdateOctober 26, 2011
✔ NPI 1164440277 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MI · WG038289
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
555 W WACKERLY STREET, Midland, MI 48640
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Other Identifiers 4

Other382209777MI · Tax Id Number
OtherWG038289MI · Bcr License Number
Medicaid2096083MI
Medicare ID-Type UnspecifiedB47172MI

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Walter J Gruber M.d. 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.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
78 services66 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
68 services68 patients
Annual depression screening, 5 to 15 minutes G0444
An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.
68 services68 patients
Hemoglobin a1c level, by device for home use 83037
A Hemoglobin A1c device for home use allows you to check your average blood sugar levels over the past 3 months. It's a simple, painless test that provides immediate results, helping you manage your diabetes more effectively.
28 services25 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
19 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48640 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
$126.15 typical visit price
range $54.34 – $166.68
Typical copayment $31.53 (range $13.58 – $41.67)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

Reported Quality Measures

Medication Reconciliation Post-Discharge
The percentage of discharges from any inpatient facility (e.g. hospital, skilled nursing facility, or rehabilitation facility) for patients 18 years and older of age seen within 30 days following discharge in the office by the physician, prescribing…
Patients 65+: 100% · 50 patients
100%50 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 11

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
14 suppliers65 claims152 services$5.17 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
10 suppliers24 claims28 services$1.00 avg. paid by Medicare
Pillow for use on nasal cannula type interface, replacement only, pair A7033
DME-Other DME · category DE001N
4 suppliers12 claims52 services$14.26 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
4 suppliers13 claims13 services$58.82 avg. paid by Medicare
Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
4 suppliers12 claims12 services$18.90 avg. paid by Medicare
Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
4 suppliers18 claims96 services$2.19 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Walter Gruber's NPI number?

The NPI number for Walter Gruber is 1164440277. It was assigned to this individual provider in the NPPES registry on July 17, 2006.

Where is Walter Gruber located?

Walter Gruber practices at 555 W Wackerly Street Suite 1500, Midland, MI 48640. The listed phone number is (989) 631-8300.

What is Walter Gruber's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Walter Gruber enrolled in Medicare?

Yes. Walter Gruber is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Walter Gruber was last updated on October 26, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years 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.