Sandra Shefrin, M.D.
NPI 1083665335 · Neurology Physician · Mill Valley, CA
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sandra Shefrin, M.D. is a Neurology Physician provider in Mill Valley, CA (NPI 1083665335).
Provider details
- NPI number
- 1083665335
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- License
- G51116 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
303 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 174 | $214 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 61 | $259 |
| Extended Office Or Other Outpatient Service By Clinical Staff, First Hour99415 | 23 | $28 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 19 | $18 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 15 | $106 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carbidopa/Levodopabrand: Carbidopa-Levodopa | 121 | 34 |
| Donepezil Hcl | 38 | 15 |
| Gabapentin | 37 | — |
| Lamotrigine | 33 | — |
| Levetiracetam | 18 | — |
| Carbidopa/Levodopabrand: Carbidopa-Levodopa Er | 14 | — |
| Pramipexole Di-Hclbrand: Pramipexole Dihydrochloride | 14 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Sandra Shefrin's NPI number?
- Sandra Shefrin's National Provider Identifier (NPI) is 1083665335, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sandra Shefrin's specialty?
- Sandra Shefrin is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Sandra Shefrin located?
- Sandra Shefrin's practice location on file with NPPES is 279 Miller Ave, Mill Valley, CA 94941-2832.
- What is Sandra Shefrin's phone number?
- The practice phone number listed in the NPPES registry for Sandra Shefrin is (415) 380-1950.
- Does Sandra Shefrin accept Medicare?
- Sandra Shefrin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sandra Shefrin's NPI active?
- Yes — Sandra Shefrin's NPI (1083665335) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.