Evan M. Williams, MD
Neurology Physician · Roseville, CA
Evan M. Williams, MD is a neurology physician with a practice address in Roseville, California, and NPI 1225297492, issued on Jun 3, 2008. Check the license (California C172182, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Evan M. Williams
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- C172182 CA
56776 MN
Self-reported in NPPES; status is on the state search - Practice location
- 2 Medical Plaza Dr Ste 205, Roseville, CA 95661
- Phone
- (916) 773-8711
- Enumerated
- Jun 3, 2008
- Record last updated
- Aug 19, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210826002451); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2008
- 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 2 Medical Plaza Dr Ste 205
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wendy Brown, M.D.Neurology Physician1285780718
- Andres Calderon, FNPFamily Nurse Practitioner1184541773
- Jingjing ChenNeurology Physician1255837068
- Benjamin Ferguson, DONeurology Physician1871973677
- Marc Fierro, P.A.Medical Physician Assistant1861552556
- Erin Kight, LCSWClinical Social Worker1285126169
Verify Evan M. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C172182Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average neurology physician in 2024
874 Medicare Part D claims for 192 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Pyridostigmine Bromide90 claims
- Donepezil Hcl78 claims
- Mycophenolate Mofetil66 claims
- Gabapentin56 claims
- Sertraline Hcl43 claims
- Pregabalin37 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: $76.05
4 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
- Sutter Valley Medical FoundationRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Evan M. Williams among 2,339 neurology physician records in California
Evan M. Williams, 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 2008, is newer than 52% of them.
- NPI issued2008 · 52% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2008 · 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 Roseville → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Wendy Brown, M.D.Roseville, CA 956611285780718
- Erica Byrd, M.D.Roseville, CA 956611598080053
- Kauroon Darya, D.ORoseville, CA 956611922414796
- Elizabeth Ekpo, M.D.Roseville, CA 956611811321557
- Marc Lenaerts, MDRoseville, CA 956611780652586
- Nicole Lopez-Seminario, M.D.Roseville, CA 956611063493567
- Mohammad Mahmood, MDRoseville, CA 956611396799508
- George Palma, MDRoseville, CA 956611760560437
Common questions
What is Evan M. Williams, MD's NPI number?
Evan M. Williams, MD's National Provider Identifier (NPI) is 1225297492, issued on Jun 3, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Evan M. Williams, MD located?
The NPPES record lists a practice address at 2 Medical Plaza Dr Ste 205, Roseville, CA, 95661. Phone: (916) 773-8711. Providers update this record themselves, so call before visiting.
How can I verify Evan M. Williams, MD's license?
NPPES lists California license number C172182, 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 Evan M. Williams, MD prescribe under Medicare Part D?
In 2024, Evan M. Williams, MD had 874 Medicare Part D claims for 192 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.