PENNY ROUMANIS JOHNSON MD
NPI 1497942106
Radiology - Diagnostic Radiology in Downey, CA

Q: What is Penny Johnson's NPI number?

The NPI number for Penny Johnson is 1497942106. It was assigned to this individual provider in the NPPES registry on September 26, 2007.

Q: What is Penny Johnson's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Penny Johnson was last updated on June 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since September 26, 2007PECOS EnrolledAccepts Medicare Assignment

83/100

CMS Quality Rating

11411 BROOKSHIRE AVE STE 101, DOWNEY, CA 90241(562) 869-9192 Get Directions Write a Review

NPPES record last updated: June 1, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 1, 2023, Jun 10, 2022 (2 updates tracked since 2022).

On this page

About Penny Roumanis Johnson Md NPPES

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

PENNY ROUMANIS JOHNSON MD (NPI 1497942106) is an individual diagnostic radiology provider in Downey, California, licensed in California (A121083) and active in the NPI registry since September 2007. She is enrolled in Medicare PECOS and is a graduate of Northeastern Ohio University College Of Medicine (2007).

NPPES Registry Identity

NPI1497942106

Entity TypeIndividualFemale

Primary Taxonomy2085R0202X

Provider Legal NamePENNY ROUMANIS JOHNSONCredential: MD

Location Address11411 BROOKSHIRE AVE STE 101Downey, CA 90241-5008

Mailing Address1762 Westwood Blvd Ste 230Los Angeles, CA 90024-5648 · (310) 943-8400 · Fax (310) 923-9912

Phone(562) 869-9192

Sole ProprietorNo

Medical School CMSNortheastern Ohio University College Of MedicineGraduated 2007

Enumeration DateSeptember 26, 2007

Last NPPES UpdateJune 1, 20232 updates tracked since enumeration

NPPES CertifiedMay 4, 2023

✔ NPI 1497942106 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in CA · A121083

Definition

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

11411 BROOKSHIRE AVE STE 101, Downey, CA 90241

Open in Google Maps ↗

Other Identifiers 1

OtherA121083CA · California Medical Board

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare, Cigna HealthCare of Florida, Inc., Sendero Health Plans, Local Nonprofit.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

Penny Roumanis Johnson Md 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 ID3577716372

PECOS Enrollment IDI20130103000167

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 Penny Johnson reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

United Medical Imaging Healthcare, Inc.

Same address

Radiology

11411 BROOKSHIRE AVE, SUITE 101
Downey, CA 90241

Reassigned Medicare billing, California enrollment
92 clinicians in this Medicare group

NPI 1760572036 (562) 923-5521

Singleton Associates PA

1,353 mi

Diagnostic Radiology

9250 PINECROFT DR
Shenandoah, TX 77380

Reassigned Medicare billing, California enrollment
89 clinicians in this Medicare group

NPI 1538107875 (915) 264-3174

Imaging Associates Of Indiana, PC

1,805 mi

Diagnostic Radiology

2001 W 86TH ST
Indianapolis, IN 46260

Reassigned Medicare billing, California enrollment
49 clinicians in this Medicare group

NPI 1699072611 (219) 767-6320

Imaging Associates Of Michigan PLLC

1,826 mi

Diagnostic Radiology

850 W BARAGA AVE
Marquette, MI 49855

Reassigned Medicare billing, California enrollment
42 clinicians in this Medicare group

NPI 1164943007 (906) 214-2900

Hurley Medical Center

1,938 mi

Urgent Care

8759 MONROE RD
Durand, MI 48429

Reassigned Medicare billing, Michigan enrollment
467 clinicians in this Medicare group

NPI 1962937425 (810) 262-2710

Mori Bean And Brooks Inc

2,146 mi

Diagnostic Radiology

1 TAMPA GENERAL CIR
Tampa, FL 33606

Reassigned Medicare billing, California enrollment
73 clinicians in this Medicare group

NPI 1093782070 (904) 236-5884

Coastal Radiology Associates, PLLC

2,326 mi

Diagnostic Radiology

722 NEWMAN RD
New Bern, NC 28562

Reassigned Medicare billing, California enrollment
37 clinicians in this Medicare group

NPI 1144270307 (888) 592-8646

Radiology Affiliates Of Central New Jersey PC

2,416 mi

Diagnostic Radiology

2501 KUSER RD
Hamilton, NJ 08691

Reassigned Medicare billing, California and New Jersey enrollments
31 clinicians in this Medicare group

NPI 1811994791 (609) 585-8800

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 16

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.

Injection, gadolinium-based magnetic resonance contrast agent, not otherwise specified (nos), per ml A9579

This is an MRI procedure where a gadolinium-based contrast agent is injected into your body. The agent enhances the images, making it easier to detect abnormalities. It's safe and side effects are rare. It's administered per milliliter as needed.

480 services21 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.

299 services299 patients

Complete ultrasound scan of 1 breast 76641

A complete ultrasound scan of one breast is a non-invasive imaging test that uses sound waves to create detailed images of the inside of your breast. It helps in detecting any abnormalities or changes, ensuring your breast health.

104 services100 patients

Complete ultrasound scan of abdomen 76700

A complete ultrasound scan of the abdomen is a non-invasive imaging procedure. It uses sound waves to produce images of the organs in your abdomen, such as the liver, gallbladder, spleen, pancreas, and kidneys. It helps in diagnosing, monitoring, and planning treatments.

91 services89 patients

Mri scan of leg joint without contrast 73721

An MRI scan of your leg joint is a non-invasive procedure that uses magnetic fields and radio waves to create detailed images of the structures within your leg. This helps doctors diagnose or monitor conditions without using contrast dye.

60 services52 patients

Mri scan of lower spinal canal without contrast 72148

An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.

52 services52 patients

X-ray of chest, 2 views 71046

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

45 services44 patients

Diagnostic mammography of both breasts 77066

Diagnostic mammography involves using special imaging technology to capture detailed images of both breasts. This procedure helps in identifying any unusual changes or abnormalities. It's a crucial step in ensuring breast health and early detection of potential issues.

44 services44 patients

Diagnostic mammography of 1 breast 77065

Diagnostic mammography of 1 breast is a detailed imaging test that allows doctors to closely examine a specific area in the breast. It's often used when a routine screening reveals an abnormality. This test can help identify any unusual changes or issues.

40 services39 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.

39 services38 patients

Complete ultrasound scan behind abdominal cavity 76770

A complete ultrasound scan behind the abdominal cavity is a non-invasive imaging procedure. It uses sound waves to create pictures of the structures and organs located at the back of your abdomen. It helps in diagnosing health conditions and monitoring ongoing treatments.

31 services31 patients

Mri scan of upper spinal canal without contrast 72141

An MRI scan of the upper spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to create detailed images of your upper spine. This helps doctors identify issues such as injuries, infections or diseases. No dye is used.

27 services27 patients

Mri scan of arm joint without contrast 73221

An MRI scan of the arm joint is a non-invasive imaging procedure that uses magnetic fields and radio waves to create detailed images of the structures within your arm joint. No contrast dye is used in this process. It helps to diagnose or monitor conditions like arthritis, injuries, or infections.

27 services25 patients

Mri scan of brain before and after contrast 70553

An MRI scan of the brain, both before and after contrast, helps visualize different brain structures. Initially, images are taken without a contrast agent. Then, a safe dye is injected which helps highlight certain areas, providing clearer, more detailed images.

15 services14 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

14 services14 patients

Complete ultrasound scan of pelvis 76856

A complete ultrasound scan of the pelvis is a safe, non-invasive imaging procedure. It uses sound waves to create pictures of your lower abdomen area, helping doctors to evaluate and diagnose any potential issues. It's painless and usually takes about 30 minutes.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90241 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

$96.36 typical visit price

range $62.96 – $187.60

Typical copayment $24.09 (range $15.74 – $46.90)

Most-billed visit code 99203

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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.

83/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

Improvement Activities

Other Providers at the Same Location NPPES 2

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

UNITED MEDICAL IMAGING HEALTHCARE, INC.

Clinic/Center (Radiology)

11411 BROOKSHIRE AVE STE 101
DOWNEY, CA 90241

Los Angeles County (310) 943-5400

KATHERINE WEI MD

Radiology (Diagnostic Radiology)

11411 BROOKSHIRE AVE STE 101
DOWNEY, CA 90241

Los Angeles County (562) 869-9192

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 Penny Johnson's NPI number?

The NPI number for Penny Johnson is 1497942106. It was assigned to this individual provider in the NPPES registry on September 26, 2007.

Where is Penny Johnson located?

Penny Johnson practices at 11411 Brookshire Ave Ste 101, Downey, CA 90241. The listed phone number is (562) 869-9192.

What is Penny Johnson's specialty?

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

Is Penny Johnson enrolled in Medicare?

Yes. Penny Johnson 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 Penny Johnson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Penny Johnson reassigns Medicare benefits to 8 organizations: United Medical Imaging Healthcare, Inc. (Downey, CA), Singleton Associates PA (Shenandoah, TX), Imaging Associates Of Indiana, PC (Indianapolis, IN), Imaging Associates Of Michigan PLLC (Marquette, MI), Hurley Medical Center (Durand, MI) and 3 more organizations, listed in the Medicare section above. 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 Penny Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Penny Johnson accept?

Health plans from Cigna HealthCare of Florida, Inc., Cigna Healthcare and Sendero Health Plans, Local Nonprofit list Penny Johnson 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.

When was this NPI record last updated?

The NPPES record for Penny Johnson was last updated on June 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.