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DR. CASSIE TOMINNA KONJA D.O.
NPI 1629204797
Internal Medicine in Warren, MI

Active since June 03, 2009PECOS EnrolledAccepts Medicare Assignment
90.09/100
CMS Quality Rating
12000 E 12 MILE RD, WARREN, MI 48093(586) 576-4140(586) 576-4146 Get Directions Write a Review

NPPES record last updated: August 27, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Cassie Tominna Konja D.o. NPPES

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

DR. CASSIE TOMINNA KONJA D.O. (NPI 1629204797) is an individual internal medicine provider in Warren, Michigan, licensed in Michigan (5101018206) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS, is affiliated with Ascension Macomb Oakland Hosp-warren Campus, and is a graduate of Other (2009).

NPPES Registry Identity

NPI1629204797
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. CASSIE TOMINNA KONJACredential: D.O.
Location Address12000 E 12 MILE RDWarren, MI 48093-3570
Mailing Address4967 Crooks Rd, Ste 130Troy, MI 48098-5801 · (248) 952-1601 · Fax (248) 952-1614
Phone(586) 576-4140
Fax(586) 576-4146
Sole ProprietorYes
Medical School CMSOtherGraduated 2009
Enumeration DateJune 3, 2009
Last NPPES UpdateAugust 27, 2015
✔ NPI 1629204797 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 · 5101018206
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.
12000 E 12 MILE RD, Warren, MI 48093
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health 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. Cassie Tominna Konja D.o. 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 ID8729216163
PECOS Enrollment IDI20140110001376
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

2

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

Henry Ford Health Macomb-Oakland Hospital
0.1 mi
Family Medicine
11800 E 12 MILE RD
Warren, MI 48093
  • Reassigned Medicare billing, Michigan enrollment
  • 161 clinicians in this Medicare group
NPI 1134176472 (586) 573-5000
Inpatient Consultants Of Michigan PC
22 mi
Hospitalist
36123 SCHOOLCRAFT RD
Livonia, MI 48150
  • Reassigned Medicare billing, Michigan enrollment
  • 177 clinicians in this Medicare group
NPI 1861442824 (734) 793-6140

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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
188 services69 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
142 services60 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
86 services81 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
46 services41 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ascension Macomb Oakland Hosp-Warren Campus

Acute Care Hospitals · Warren, MI
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230195
Location11800 East Twelve Mile RoadWarren, MI 48093 · Macomb County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48093 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
$134.28 typical visit price
range $58.04 – $177.36
Typical copayment $33.57 (range $14.51 – $44.34)
Most-billed visit code 99204
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
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.

90.09/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality79.56
Promoting Interoperability100
Improvement Activities40
Cost54.6

Reported Quality Measures

Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
100%27 patients5/55-star benchmark: 100%
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.

Other Providers at the Same Location NPPES 18

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RACHEL BANADOS
Occupational Therapist
12000 E 12 MILE RD
WARREN, MI 48093
Macomb County (586) 573-5731
DR. ANA JANIC DDS
Dentist (Periodontics)
12000 E 12 MILE RD
WARREN, MI 48093
Macomb County (586) 576-4140
MANSUR ROY DDS
Dentist (Periodontics)
12000 E 12 MILE RD
WARREN, MI 48093
Macomb County (586) 576-4140
JARED LUTSIC DO
Orthopaedic Surgery
12000 E 12 MILE RD
WARREN, MI 48093
Macomb County (586) 759-7300
RUXANDRA ROSCA MD
Student in an Organized Health Care Education/Training Program
12000 E 12 MILE RD
WARREN, MI 48093
Macomb County (248) 978-9609
JORDIN SHELLEY RODEN-FOREMAN DO
Student in an Organized Health Care Education/Training Program
12000 E 12 MILE RD
WARREN, MI 48093
Macomb County (248) 546-2600
JOHN DOMINIC MONTEROSSO
Student in an Organized Health Care Education/Training Program
12000 E 12 MILE RD
WARREN, MI 48093
Macomb County (586) 582-7550
DR. RYAN MICHAEL SMITH D.O.
Family Medicine
12000 E 12 MILE RD
WARREN, MI 48093
Macomb County (586) 573-5000

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 Cassie Konja's NPI number?

The NPI number for Cassie Konja is 1629204797. It was assigned to this individual provider in the NPPES registry on June 3, 2009.

Where is Cassie Konja located?

Cassie Konja practices at 12000 E 12 Mile Rd, Warren, MI 48093. The listed phone number is (586) 576-4140.

What is Cassie Konja's specialty?

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

Is Cassie Konja enrolled in Medicare?

Yes. Cassie Konja 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 organizations bill Medicare for Cassie Konja's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cassie Konja reassigns Medicare benefits to 2 organizations: Henry Ford Health Macomb-Oakland Hospital (Warren, MI) and Inpatient Consultants Of Michigan PC (Livonia, MI). Each 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 Cassie Konja's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Cassie Konja accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and Priority Health list Cassie Konja as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Cassie Konja affiliated with any hospitals?

According to CMS data, Cassie Konja is affiliated with Ascension Macomb Oakland Hosp-Warren Campus.

When was this NPI record last updated?

The NPPES record for Cassie Konja was last updated on August 27, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.