DR. KAREN M GREMMINGER M.D.
NPI 1174668404
Internal Medicine - Hematology & Oncology in Globe, AZ

Q: What is Karen Gremminger's NPI number?

The NPI number for Karen Gremminger is 1174668404. It was assigned to this individual provider in the NPPES registry on February 21, 2007.

Q: What is Karen Gremminger's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Karen Gremminger was last updated on June 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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 February 21, 2007PECOS EnrolledAccepts Medicare Assignment

5880 S HOSPITAL DR, GLOBE, AZ 85501(928) 425-3261 Get Directions Write a Review

NPPES record last updated: June 13, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 13, 2025, Feb 16, 2022, Jul 5, 2018 and 3 more (6 updates tracked since 2015).

On this page

About Dr. Karen M Gremminger M.d. NPPES

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

DR. KAREN M GREMMINGER M.D. (NPI 1174668404) is an individual hematology & oncology provider in Globe, Arizona, licensed in Arizona (64504) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Oshkosh, and is a graduate of Texas Tech University Health Science Center School Of Medicine (1991).

NPPES Registry Identity

NPI1174668404

Entity TypeIndividualFemale

Primary Taxonomy207RH0003X

Provider Legal NameDR. KAREN M GREMMINGERCredential: M.D.

Location Address5880 S HOSPITAL DRGlobe, AZ 85501-9447

Mailing Address122 E College AveAppleton, WI 54911-5794 · (920) 996-3264 · Fax (920) 830-5910

Phone(928) 425-3261

Sole ProprietorNo

Medical School CMSTexas Tech University Health Science Center School Of MedicineGraduated 1991

Enumeration DateFebruary 21, 2007

Last NPPES UpdateJune 13, 20256 updates tracked since enumeration

NPPES CertifiedJune 13, 2025

✔ NPI 1174668404 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

Licenses✔ Licensed in AZ · 64504✔ Licensed in WI · 38760

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

5880 S HOSPITAL DR, Globe, AZ 85501

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Secondary Practice Location 1

Location 1491 S Washburn StOshkosh, WI 54904-6733 · Phone (920) 292-5555

Other Identifiers 2

Medicaid098945AZ

Medicaid32367700WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter Health, Blue Cross Blue Shield of Arizona and more.Insurance ›

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

Dr. Karen M Gremminger M.d. 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 ID3678545902

PECOS Enrollment IDI20210909003593, I20211012002914

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 Reassignments

Medicare enrollment records show Karen Gremminger reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Cobre Valley Regional Medical Center

Same address

Rural Health

5880 S HOSPITAL DR
Globe, AZ 85501

Reassigned Medicare billing, Arizona enrollment
Also billed through NPI 1871566521 (Arizona)
94 clinicians in this Medicare group

NPI 1538315890 (928) 425-3247

San Carlos Apache Healthcare Corporation

23 mi

Critical Access Hospital

103 MEDICINE WAY ROAD
Peridot, AZ 85542

Reassigned Medicare billing, Texas enrollment
438 clinicians in this Medicare group

NPI 1265813075 (928) 475-1200

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

Areas of Expertise CMS Part B claims 6

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 moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

437 services135 patients

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.

110 services69 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

49 services49 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

37 services25 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

20 services20 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

15 services15 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 85501 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

$168.60 typical visit price

range $55.44 – $168.60

Typical copayment $42.15 (range $13.86 – $42.15)

Most-billed visit code 99205

Established Patient

$98.00 typical visit price

range $17.72 – $137.41

Typical copayment $24.50 (range $4.43 – $34.35)

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.

COBRE VALLEY REGIONAL MEDICAL CENTER

Clinical Medical Laboratory