Physician Profile
Ronnie I. Mimran, MD is a healthcare provider in Castro Valley, CA specializing in neurological surgery. According to Medicare claims data, Ronnie cared for 69 Medicare patients across 78 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, and initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
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.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
20055 LAKE CHABOT RD #110
Castro Valley, CA 94546
Within Neurological Surgery generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Brain & spine conditions
Brain conditions
Brain disorders
Brain injury
Brain tumors
Movement disorders
Nerve disorders
Pain
Pediatric conditions
Spine & back
Spine conditions
Spine deformity
Trauma & injury
Most searched procedures
Brain & spine surgery
Brain procedures
Brain surgery
Cranial reconstruction
Diagnostic & therapeutic
Endovascular procedures
Functional neurosurgery
Monitoring & trauma
Nerve procedures
Nerve surgery
Pain procedures
Pediatric neurosurgery
Radiation & radiosurgery
Radiation surgery
Skull base surgery
Spasticity treatment
Spine procedures
Spine surgery
Vascular neurosurgery
78 services · 69 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
40 | As often as other peers in Neurological Surgery |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
24 | |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
14 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Mimran is a neurosurgeon in Castro Valley, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Neurological Surgery”.
NPI registry
Dr. Mimran is listed at 20055 Lake Chabot Rd #110, Castro Valley, CA 94546. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (510) 886-3138. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Mimran's National Provider Identifier is 1821043498. 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
Dr. Mimran has 20+ years experience. Registered with an NPI since 2006. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
According to Medicare billing data, Dr. Mimran 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
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mimran. 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.