Physician Profile
William R. Mains, M.D.
Unclaimed ProfileAbout Dr. Mains
William R. Mains, M.D. practices addiction psychiatry in Oakland, CA. William is a 1996 graduate of University of California, San Diego School of Medicine. According to Medicare claims data, the services billed most often include residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (510) 553-8500
- Email not available
Practice Locations
7200 BANCROFT AVE SUITE 133
Oakland, CA 94605
Conditions Commonly Evaluated or Treated
Within Psychiatry generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Anxiety, trauma, and obsessive-compulsive
Mood disorders
Psychotic disorders
Substance-related and addictive
Addiction & Substance Use
Cognitive and adjustment
Eating Disorders
Eating, sleep, and somatic
Mood & Depression
Neurodevelopmental and behavioral
Personality and dissociative
Sleep & Wakefulness
Procedures & services
Most searched procedures
- Anxiety and depression treatment
- Cognitive behavioral therapy
- Medication management
- Psychiatric evaluation
- Telepsychiatry
Assessment
Addiction care
Addiction Medicine
Assessments
Brain stimulation
Consultations
Diagnostics
Inpatient care
Interventional psychiatry
Psychotherapy
Sleep Medicine
Specialized care
Therapy
Therapy and care
Procedures Most Often Billed to Medicare
32 services · 12 patients · 1 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes | Office visit | 99348 |
32 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Class of 1996 at University of California, San Diego School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is William R. Mains?
William R. Mains is an addiction psychiatry in Oakland, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is William R. Mains's address?
William R. Mains is listed at 7200 Bancroft Ave Suite 133, Oakland, CA 94605. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with William R. Mains?
The number on file is (510) 553-8500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for William R. Mains?
William R. Mains's National Provider Identifier is 1477751741. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did William R. Mains train?
William R. Mains attended University of California, San Diego School of Medicine, graduating in 1996. This comes from the CMS National Downloadable File.
CMS public data
How much experience does William R. Mains have?
William R. Mains has 30 years experience. Calculated from a graduation year of 1996, reported in the CMS National Downloadable File.
CMS public data
What procedures does William R. Mains perform?
According to Medicare billing data, William R. Mains the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is William R. Mains's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by William R. Mains. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.