Melissa A. McKenzie, DO
Neurology Physician · Eureka, CA
Melissa A. McKenzie, DO is a neurology physician with a practice address in Eureka, California, and NPI 1861450876, issued on May 2, 2006. Check the license (California 20A8768, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Melissa A. McKenzie
- Credential
- DO
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 20A8768 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2828 Oneil Lane, Eureka, CA 95503
- Phone
- (707) 443-9385
- Enumerated
- May 2, 2006
- Record last updated
- Nov 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (707) 443-0258
- Medicaid ID
- 00AX87680 CA
- Medicare enrollment
- Enrolled (PECOS I20040607001585); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 1999
- 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 2828 Oneil Lane
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Donald Iverson, MDNeurology Physician1356309728
Verify Melissa A. McKenzie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A8768Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% more Medicare Part D claims than the average neurology physician in 2024
2,415 Medicare Part D claims for 289 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D.
Most prescribed
- Levetiracetam225 claims
- Carbidopa-Levodopa192 claims
- Memantine Hcl Er181 claims
- Donepezil Hcl161 claims
- Lamotrigine150 claims
- Oxcarbazepine103 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: $84.55
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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
- Providence Medical FoundationSanta Rosa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Melissa A. McKenzie among 2,339 neurology physician records in California
Melissa A. McKenzie, DO 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1999 · median 2006 among the 1,628 with a school on file
- Record last updated2021 · 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 Eureka → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- John Gambin, MDEureka, CA 955031588622955
- Donald Iverson, MDEureka, CA 955031356309728
- Thomas Krenek, MDEureka, CA 955011558329920
- Walid MassarwehUkiah, CA 954821396867412
- David Greenberg, M.D.Sonoma, CA 954761336481225
- Allan Bernstein, MDSebastopol, CA 954721992889067
- Camille Keene, M.D.Lakeport, CA 954531780896951
- Krithika Umesh Peshwe, MDClearlake, CA 954221093342628
Common questions
What is Melissa A. McKenzie, DO's NPI number?
Melissa A. McKenzie, DO's National Provider Identifier (NPI) is 1861450876, issued on May 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Melissa A. McKenzie, DO located?
The NPPES record lists a practice address at 2828 Oneil Lane, Eureka, CA, 95503. Phone: (707) 443-9385. Providers update this record themselves, so call before visiting.
How can I verify Melissa A. McKenzie, DO's license?
NPPES lists California license number 20A8768, 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 Melissa A. McKenzie, DO prescribe under Medicare Part D?
In 2024, Melissa A. McKenzie, DO had 2,415 Medicare Part D claims for 289 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.