DR. ALLISON MICHELLE JOHNSEN M.D.
NPI 1730475252
Radiology - Diagnostic Radiology in Knoxville, TN

Active since June 22, 2011PECOS EnrolledAccepts Medicare Assignment
99.08/100
CMS Quality Rating
4820 OLD KINGSTON PIKE, KNOXVILLE, TN 37919(865) 558-9862(865) 584-3478 Get Directions Write a Review

NPPES record last updated: March 30, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Mar 30, 2026, Oct 21, 2022, Jul 21, 2022 and 1 more (4 updates tracked since 2017).

About Dr. Allison Michelle Johnsen M.d. NPPES

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

DR. ALLISON MICHELLE JOHNSEN M.D. (NPI 1730475252) is an individual diagnostic radiology provider in Knoxville, Tennessee, licensed in Tennessee (MD52135) and active in the NPI registry since June 2011. She is enrolled in Medicare PECOS, is affiliated with Lafollette Medical Center, and is a graduate of Other (2007).

NPPES Registry Identity

NPI1730475252
Entity TypeIndividualFemale
Primary Taxonomy2085R0202X
Provider Legal NameDR. ALLISON MICHELLE JOHNSENCredential: M.D.
Location Address4820 OLD KINGSTON PIKEKnoxville, TN 37919-6424
Mailing Address4820 Old Kingston PikeKnoxville, TN 37919-6424 · (865) 558-9862 · Fax (865) 558-9862
Fax(865) 584-3478
Sole ProprietorNo
Medical School CMSOtherGraduated 2007
Enumeration DateJune 22, 2011
Last NPPES UpdateMarch 30, 20264 updates tracked since enumeration
NPPES CertifiedMarch 30, 2026
NPI 1730475252 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
Licenses Licensed in TN · MD52135 Licensed in SC · LL33755
Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

4820 OLD KINGSTON PIKE, Knoxville, TN 37919

Other Names 1

Former Name (1)Allison Michelle Babelay

Other Identifiers 1

MedicaidQ022970TN

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Allison Michelle Johnsen 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 ID3173815495
PECOS Enrollment IDI20160707000742
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 69

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.

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967
Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.
5,630 services62 patients
Injection, gadoterate meglumine, 0.1 ml A9575
Gadoterate meglumine is a contrast agent used in MRI scans to help visualize certain areas of your body more clearly. It's injected into your bloodstream, typically through a vein in your arm, and helps doctors get more detailed images.
1,040 services11 patients
Injection, gadoteridol, (prohance multipack), per ml A9576
Gadoteridol, found in ProHance Multipack, is a contrast agent used in MRI scans. It's injected into your body to help highlight certain areas, making them easier to see. This can assist in diagnosing various health conditions. It's generally safe with few side effects.
360 services25 patients
Mri scan of brain without contrast 70551
An MRI scan of the brain without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your brain. It helps in detecting abnormalities like tumors, stroke, inflammation, or infection.
181 services87 patients
X-ray of chest, 1 view 71045
A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.
178 services171 patients
Screening mammography 77067
Screening mammography is a preventative measure that uses low-dose X-rays to take images of the chest area. It's a key tool in early detection of abnormalities, helping to identify issues before they become symptomatic. It is recommended annually for certain age groups.
132 services132 patients

Hospital Affiliations CMS Care Compare 5

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

Lafollette Medical Center

Acute Care Hospitals · La Follette, TN
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number440033
Location923 East Central AvenueLa Follette, TN 37766 · Campbell County
Emergency services

Tennova Healthcare-Jefferson Memorial Hospital

Acute Care Hospitals · Jefferson City, TN
2/5 CMS rating
OwnershipProprietary
CMS Certification Number440056
Location110 Hospital DriveJefferson City, TN 37760 · Jefferson County
Emergency services

Sweetwater Hospital Association

Acute Care Hospitals · Sweetwater, TN
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number440084
Location304 Wright StSweetwater, TN 37874 · Monroe County
Emergency services Birthing friendly

Physicians Regional Medical Center

Acute Care Hospitals · Powell, TN
2/5 CMS rating
OwnershipProprietary
CMS Certification Number440120
Location7565 Dannaher Way PowellPowell, TN 37849 · Knox County
Emergency services Birthing friendly

Tennova Healthcare - Newport Medical Center

Acute Care Hospitals · Newport, TN
3/5 CMS rating
OwnershipProprietary
CMS Certification Number440153
Location435 2nd StNewport, TN 37821 · Cocke County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37919 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
$81.53 typical visit price
range $52.64 – $160.89
Typical copayment $20.38 (range $13.16 – $40.22)
Most-billed visit code 99203
Established Patient
$66.01 typical visit price
range $16.72 – $131.41
Typical copayment $16.50 (range $4.18 – $32.85)
Most-billed visit code 99213
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.

99.08/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality98.92
Improvement Activities40

Reported Quality Measures

Appropriate Follow-up Imaging for Incidental Abdominal Lesions
Percentage of final reports for abdominal imaging studies for asymptomatic patients aged 18 years and older with one or more of the following noted incidentally with follow_up imaging recommended: - Liver lesion =< 0.5 cm - Cystic kidney lesion < 1.0 cm -…
Lower rates are better for this measure.
38%21 patients
Radiation Consideration for Adult CT: Utilization of Dose Lowering Techniques
Percentage of final reports for patients aged 18 years and older undergoing CT with documentation that one or more of the following dose reduction techniques were used: - Automated exposure control - Adjustment of the mA and/or kV according to patient size -…
100%630 patients
Radiology: Reminder System for Screening Mammograms
Percentage of patients undergoing a screening mammogram whose information is entered into a reminder system with a target due date for the next mammogram
100%141 patients
Radiology: Stenosis Measurement in Carotid Imaging Reports
Percentage of final reports for carotid imaging studies (neck magnetic resonance angiography [MRA], neck computed tomography angiography [CTA], neck duplex ultrasound, carotid angiogram) performed that include direct or indirect reference to measurements of…
90%59 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.

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.

Counselor (Professional)
4820 OLD KINGSTON PIKE
KNOXVILLE, TN 37919
Radiology (Diagnostic Radiology)
4820 OLD KINGSTON PIKE
KNOXVILLE, TN 37919
Radiology (Diagnostic Radiology)
4820 OLD KINGSTON PIKE
KNOXVILLE, TN 37919
Radiology (Diagnostic Radiology)
4820 OLD KINGSTON PIKE
KNOXVILLE, TN 37919
Radiology (Diagnostic Radiology)
4820 OLD KINGSTON PIKE
KNOXVILLE, TN 37919
Radiology (Diagnostic Radiology)
4820 OLD KINGSTON PIKE
KNOXVILLE, TN 37919
Radiology (Diagnostic Radiology)
4820 OLD KINGSTON PIKE
KNOXVILLE, TN 37919
Radiology (Diagnostic Radiology)
4820 OLD KINGSTON PIKE
KNOXVILLE, TN 37919

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 Allison Johnsen's NPI number?

The NPI number for Allison Johnsen is 1730475252. It was assigned to this individual provider in the NPPES registry on June 22, 2011. The provider is also known as Allison Michelle Babelay.

Where is Allison Johnsen located?

Allison Johnsen practices at 4820 Old Kingston Pike, Knoxville, TN 37919. The listed phone number is (865) 558-9862.

What is Allison Johnsen's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Allison Johnsen enrolled in Medicare?

Yes. Allison Johnsen 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.

What insurance does Allison Johnsen accept?

Health plans from Alliant Health Plans, Inc. list Allison Johnsen 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 Allison Johnsen affiliated with any hospitals?

According to CMS data, Allison Johnsen is affiliated with Lafollette Medical Center, Tennova Healthcare-Jefferson Memorial Hospital, Sweetwater Hospital Association, Physicians Regional Medical Center and Tennova Healthcare - Newport Medical Center.

When was this NPI record last updated?

The NPPES record for Allison Johnsen was last updated on March 30, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.