KAREN ROSA NUNEZ-WALLACE MD
NPI 1811121197
Psychiatry & Neurology - Neurology in Huntington Beach, CA

NPI Status: Active since May 14, 2009

Contact Information

19066 MAGNOLIA ST
HUNTINGTON BEACH, CA
ZIP 92646
Phone: (714) 968-0068

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  • Individual
  • Female
  • Years of Experience 18
  • Psychiatry & Neurology
  • Neurology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About KAREN NUNEZ-WALLACE

This page provides the complete NPI Profile along with additional information for Karen Nunez-wallace, a provider established in Huntington Beach, California with a medical specialization in Psychiatry & Neurology, focusing in neurology and more than 18 years of experience. She graduated from Texas Tech University Health Science Center School Of Medicine in 2009. The healthcare provider is registered in the NPI registry with number 1811121197 assigned on May 2009. The practitioner's primary taxonomy code is 2084N0400X with license number C163965 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1811121197
Provider Name
KAREN ROSA NUNEZ-WALLACE MD
Gender
Female
Entity Type
Individual
Location Address
19066 MAGNOLIA ST HUNTINGTON BEACH, CA 92646
Location Phone
(714) 968-0068
Mailing Address
PO BOX 35380 LAS VEGAS, NV 89133
Medical School Name
TEXAS TECH UNIVERSITY HEALTH SCIENCE CENTER SCHOOL OF MEDICINE
Graduation Year
2009
Is Sole Proprietor?
No
Enumeration Date
05-14-2009
Last Update Date
01-04-2026
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Location Map

Secondary Locations

  • 1 Baylor Plz Baylor College of Medicine - Department of Neurology
    Houston, TX 77030
    (713) 798-6151

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Psychiatry & Neurology Neurology

Taxonomy Code
2084N0400X
Type
Allopathic & Osteopathic Physicians
License No.
C163965
License State
CA
Taxonomy Description
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
12084N0400XAllopathic & Osteopathic Physicians

Psychiatry & Neurology
Neurology

BP10034902 (TX)

Medicare Participation & PECOS Enrollment Status

Karen Nunez-wallace is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Karen Nunez-wallace is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 9436379393

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20200406001421

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Established patient office or other outpatient visit, 20-29 minutes

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.

This service was performed 20 times for 17 patients

Established patient office or other outpatient visit, 30-39 minutes

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.

This service was performed 26 times for 18 patients

New patient office or other outpatient visit, 45-59 minutes

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.

This service was performed 12 times for 12 patients

Telephone medical discussion with physician, 11-20 minutes

This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.

This service was performed 33 times for 20 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $35.59 for a new patient copayment and $27.49 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 92646 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $142.39
  • Minimum New Patient Price $62.96
  • Maximum New Patient Price $187.6
  • Average New Patient Copayment $35.59
  • Minimum New Patient Copayment $15.74
  • Maximum New Patient Copayment $46.9

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $109.96
  • Minimum Established Patient Price $20.84
  • Maximum Established Patient Price $153.61
  • Average Established Patient Copayment $27.49
  • Minimum Established Patient Copayment $5.21
  • Maximum Established Patient Copayment $38.4

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Reviews for KAREN ROSA NUNEZ-WALLACE MD

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1811121197, we treat the final digit (7) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
8
Unchanged
Pos 3
1
Doubled → 2
Pos 4
1
Unchanged
Pos 5
1
Doubled → 2
Pos 6
2
Unchanged
Pos 7
1
Doubled → 2
Pos 8
1
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
7
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 1 → 2 1 → 2 1 → 2 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 8 + 2 + 1 + 2 + 2 + 2 + 1 + 1 + 8 + 24 = 53

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1811121197.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Clinical Pharmacology
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Social Worker (Clinical)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Nurse Practitioner (Family)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Internal Medicine
19066 MAGNOLIA ST, HEALTHCARE PARTNERS
HUNTINGTON BEACH, CA 92646
Urology
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Clinic/Center (Radiology)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Orthopaedic Surgery (Sports Medicine)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Physical Therapy Assistant
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Internal Medicine
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Nurse Practitioner (Gerontology)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Specialist/Technologist, Other (EEG)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Physician Assistant (Medical)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Internal Medicine
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Physician Assistant
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Audiologist
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Physical Medicine & Rehabilitation (Pain Medicine)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Physical Therapist
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Nurse Practitioner (Family)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Physical Medicine & Rehabilitation (Sports Medicine)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646
Physical Medicine & Rehabilitation (Sports Medicine)
19066 MAGNOLIA ST
HUNTINGTON BEACH, CA 92646

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1811121197, enumerated as an "individual" on May 14, 2009.

The provider is located at 19066 MAGNOLIA ST HUNTINGTON BEACH, CA 92646 and the phone number is (714) 968-0068.

Psychiatry & Neurology with taxonomy code 2084N0400X and a focus in Neurology.