Karen Rosa Nunez-Wallace, MD
Neurology Physician · Huntington Beach, CA
Karen Rosa Nunez-Wallace, MD is a neurology physician with a practice address in Huntington Beach, California, and NPI 1811121197, issued on May 14, 2009. Check the license (California C163965, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Rosa Nunez-Wallace
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- C163965 CA
Self-reported in NPPES; status is on the state search - Practice location
- 19066 Magnolia St, Huntington Beach, CA 92646
- Phone
- (714) 968-0068
- Enumerated
- May 14, 2009
- Record last updated
- Jul 7, 2026
- Medicare enrollment
- Enrolled (PECOS I20200406001421); accepts Medicare assignment
- Medical or professional school
- Texas Tech University Health Science Center School Of Medicine, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 19066 Magnolia St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicole Byrnes, BS, R.EEG T.EEG Specialist/Technologist1962072173
- Karen Carter, LCSWClinical Social Worker1598988370
- Kathleen Coffman, PAMedical Physician Assistant1013912575
- Tracy DriverRheumatology Physician1982048112
- Tiffany Erickson, PT, DPTPhysical Therapist1073079059
- Mark Fredrick, MDInternal Medicine Physician1518964998
Verify Karen Rosa Nunez-Wallace in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C163965Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% more Medicare Part D claims than the average neurology physician in 2024
2,402 Medicare Part D claims for 410 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Memantine Hcl288 claims
- Donepezil Hcl210 claims
- Levetiracetam166 claims
- Gabapentin136 claims
- Carbidopa-Levodopa120 claims
- Quetiapine Fumarate94 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $226.68
2 payments; by number, the most common kind was food and beverage; the largest payer was Teva Pharmaceuticals USA, Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Healthcare Partners Affiliates Medical GroupHuntington Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Rosa Nunez-Wallace among 2,339 neurology physician records in California
Karen Rosa Nunez-Wallace, MD is one of 2,339 neurology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 58% of them.
- NPI issued2009 · 58% of these records are older, 39% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2009 · median 2006 among the 1,628 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in Huntington Beach → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Duk Kim, M.D.Huntington Beach, CA 926461760423354
- James Park, D.O.Huntington Beach, CA 926471306871421
- Zhanna Rapoport Md, M.D.Huntington Beach, CA 926471346267382
- Farzin Pedouim, M.D.Huntington Beach, CA 926481649567165
- Kaveh Saremi, M.D.Huntington Beach, CA 926481447437769
- Ravi Singh, MDHuntington Beach, CA 926481417108317
- Karen Cheng, M.D.Laguna Hills, CA 926531518163161
- Caroline Choan, MDLaguna Hills, CA 926531255352498
Common questions
What is Karen Rosa Nunez-Wallace, MD's NPI number?
Karen Rosa Nunez-Wallace, MD's National Provider Identifier (NPI) is 1811121197, issued on May 14, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Karen Rosa Nunez-Wallace, MD located?
The NPPES record lists a practice address at 19066 Magnolia St, Huntington Beach, CA, 92646. Phone: (714) 968-0068. Providers update this record themselves, so call before visiting.
How can I verify Karen Rosa Nunez-Wallace, MD's license?
NPPES lists California license number C163965, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen Rosa Nunez-Wallace, MD prescribe under Medicare Part D?
In 2024, Karen Rosa Nunez-Wallace, MD had 2,402 Medicare Part D claims for 410 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.