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Dr. Sandra L. Shefrin, MD
NPI1083665335PAC ID0547272965
- Medicare services, 2024
- 303
- Medicare patients, 2024
- 151
- Part D claims, 2024
- 492
- Publications
- 4
- Hospital affiliations
- 1
- Practice address
- 250 Bon Air Road, Greenbrae, CA 94904
- Practice phone
- Call (415) 925-7900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Sandra L. Shefrin is a neurologist in Greenbrae, California
Dr. Shefrin practices at MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District.
Dr. Shefrin's NPI, 1083665335, was assigned on May 12, 2006. Dr. Shefrin graduated from University of Manitoba in 1978. Dr. Shefrin holds California license G51116.
NPI and contact details
- NPI
- 1083665335NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0547272965
- NPI enumeration date
- May 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (415) 925-7900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sandra L. Shefrin practices at MarinHealth Medical Center in Greenbrae, California
Dr. Shefrin's primary practice is MarinHealth Medical Center, at 250 Bon Air Road, Greenbrae, CA 94904 in Marin County. The practice phone is (415) 925-7900.
- MarinHealth Medical Center250 Bon Air Road, Greenbrae, CA 94904 · Marin CountyPhone(415) 925-7900
Source: Dmand AI Affiliation Data
Dr. Sandra L. Shefrin is affiliated with 1 site of care
Dr. Shefrin's primary practice is MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sandra L. Shefrin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shefrin practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MarinHealth Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Sandra L. Shefrin is one of 2,207 neurologists in California
Neurology is Dr. Shefrin's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Shefrin is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Shefrin's licenses on file in 2 states: California and Florida.
Specialties and state licenses
- Neurology, CaliforniaPrimary
- Florida license
Clinical focus
Dmand AI lists carpal tunnel syndrome, cerebrovascular disease, epilepsy, hereditary polyneuropathy, lower back pain, migraine and chronic headache, neuropathy and parkinson's disease among the conditions Dr. Shefrin treats.
Neurologists near Dr. Shefrin
Counts of neurologists with a Dmand AI profile, by place and practice. Each opens the list.
2,207neurologists in California
3neurologists in Greenbrae
3neurologists at MarinHealth Medical CenterSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Sandra L. Shefrin billed Medicare for 303 services in 2024
CMS data shows 303 Medicare services from Dr. Shefrin across 6 procedure codes in 2024, for 151 Medicare patients. Medicare paid $41,718 for them. Every service was in an office.
Medicare services, 2024303
Medicare patients151
Paid by Medicare$41,718
Procedure codes6
Dr. Shefrin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3972024: 28428%
- Other services
- 2023: 182024: 196%
Dr. Shefrin compared with the California median for neurologists, 2024
- Dr. Shefrin
- California median
- Medicare services
- 303vs 40425% below
- Medicare patients
- 151vs 19021% below
- Part D claims
- 312vs 324Close to median
Medians across 1,995 neurologists in California with Dmand AI profiles that report each measure.
Dr. Shefrin's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Shefrin and other neurologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Sandra L. Shefrin treated 151 Medicare patients in 2024, average age 79
CMS counts 151 Medicare patients who saw Dr. Shefrin in 2024. The largest group is 75 to 84, with 86 patients. 75% of them have high cholesterol, and 70% have high blood pressure. Their average risk score is 1.25, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Shefrin's median patient age at 77, with 58% women.
Medicare patients, 2024151
Average age79
Average risk score1.25
Dr. Shefrin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Shefrin's Medicare patients by sex, 2024
- Women7751%
- Men7449%
Chronic conditions among Dr. Shefrin's Medicare patients, 2024
- High cholesterol75%
- High blood pressure70%
- Arthritis56%
- Mood disorders37%
- Depression36%
- Anxiety35%
- Ischemic heart disease32%
- Parkinson's disease30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Shefrin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women58%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sandra L. Shefrin wrote 492 Medicare Part D claims in 2024
In 2024, Dr. Shefrin wrote 492 Medicare Part D claims for 102 patients. 94% of them were for generic drugs. CMS names the drug for 312 of them, across 10 drugs with 11 or more claims each, at $10,220 in total drug cost. In 2023, CMS named 496 claims across 18 drugs.
Part D claims, 2024492
Drugs named by CMS10
Total drug cost$10,220
Part D patients102
Dr. Shefrin's Part D claims by kind of drug, 2024
- Generic462 claims94%
- Brand-name and other30 claims6%
Dr. Shefrin's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Shefrin's Part D claims, 2024
- Antipsychotics, patients 65 and over4%22 of 492 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4962024: 31237%
Drugs named by CMS: 10 in 2024, 18 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Sandra L. Shefrin offers telehealth to Medicare patients
Dr. Shefrin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Shefrin as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Sandra L. Shefrin has 4 publications on record
Dmand AI links 4 papers to Dr. Shefrin. The most frequent topics are Blindness, Evoked Potentials, Visual and Hemianopsia. Dr. Shefrin's most frequent co-authors are Michael J. Aminoff, MD and Douglas Sproul Goodin.
Papers4
Topics Dr. Shefrin writes about most
- Blindness
- Evoked Potentials, Visual
- Hemianopsia
- Reaction Time
- Visual Fields
Dr. Shefrin's most frequent co-authors
- Michael J. Aminoff, MD3 shared papers
- Douglas Sproul Goodin3 shared papers
Recent publications by Dr. Shefrin
BlindnessBrainEvoked Potentials, Visual
Electroencephalogr Clin Neurophysiol Suppl
BlindnessEvoked Potentials, VisualHemianopsia
See who Dr. Shefrin researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Shefrin works with, so you can find a warm path to the right neurologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Sandra L. Shefrin received $53 in industry payments from 2017 to 2023
CMS Open Payments shows 3 general payments to Dr. Shefrin from 2 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 74% of the total. Abbvie Inc. paid the most, $39.
General payments to Dr. Shefrin by program year, 2017 to 2023
General payments to Dr. Shefrin by kind, 2017 to 2023
$53in total
- Food and beverage$3974%
- Speaker and faculty fees$1426%
Companies that paid Dr. Shefrin the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sandra L. Shefrin has 5 awards and honors on record
Dmand AI lists 5 awards for Dr. Shefrin, most recently 2021 Best Young Adult Fiction in 2021.
Awards and honors for Dr. Shefrin
- 2021
- 2021 Best Young Adult Fiction
- 2020
- Marin Magazine: Top Neurologist in 415 area code
- 1974
- Dean’s Honor List
- 1972
- University of Manitoba Alumni Association Gold Medal for Excellence
- Undated
- Bay Area Consumers’ Checkbook: Top Neurologist in the Bay Area
Source: Dmand AI Professional Profile Data
Dr. Sandra L. Shefrin graduated from University of Manitoba
Dr. Shefrin graduated from University of Manitoba in 1978. Dr. Shefrin is a member of AAN.
- Medical school
- Board certified in internal medicine
- Board certified in diplomate, american board of medical examiners
- Board certified in neurology
- Board certified in fellow of the royal college of physicians and surgeons in neurology
Source: Dmand AI Professional Profile Data
Dr. Sandra L. Shefrin accepts plans from 8 insurance carriers
Dr. Shefrin is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Humana
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Shefrin accepts, by number of carriers
- Medicare8
- PPO7
- HMO4
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Sandra L. Shefrin's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Sandra L. Shefrin
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Sandra L. Shefrin's NPI number?
Dr. Sandra L. Shefrin's NPI number is 1083665335. It was assigned on May 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Sandra L. Shefrin?
Dr. Sandra L. Shefrin is a neurologist in Greenbrae, California. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Sandra L. Shefrin practice?
Dr. Shefrin practices at 250 Bon Air Road, Greenbrae, CA 94904. Dr. Shefrin's primary practice is MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District.
What is Dr. Sandra L. Shefrin's office phone number?
The practice phone on file for Dr. Shefrin is (415) 925-7900.
What is Dr. Sandra L. Shefrin's medical license number?
Dr. Shefrin holds California license G51116, one of the licenses on file in 2 states.
Which states has Dr. Sandra L. Shefrin been licensed in?
Dmand AI has state licenses on file for Dr. Shefrin in California (1983 to 2027) and Florida (2019 to 2021).
Which hospitals is Dr. Sandra L. Shefrin affiliated with?
Dr. Shefrin practices at MarinHealth Medical Center in Greenbrae, California.
Does Dr. Sandra L. Shefrin accept Medicare?
Yes. CMS data shows Dr. Shefrin billed Medicare for 303 services in 2024, and Dr. Shefrin accepts Medicare assignment.
Does Dr. Sandra L. Shefrin offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Shefrin as offering telehealth services.
How many Medicare patients does Dr. Sandra L. Shefrin see?
CMS counts 151 Medicare patients who saw Dr. Shefrin in 2024, with an average age of 79.
Show 9 more questionsShow fewer questions
Is Dr. Sandra L. Shefrin board certified?
Yes. Dr. Shefrin is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Sandra L. Shefrin bill to Medicare?
In 2024, Dr. Shefrin's most billed Medicare services were office visit, established patient (99215), office visit, new patient (99205) and care management and other visits (99415).
Where did Dr. Sandra L. Shefrin go to medical school?
Dr. Shefrin graduated from University of Manitoba in 1978.
What drugs does Dr. Sandra L. Shefrin prescribe most?
In 2024 Medicare Part D data, Dr. Shefrin's most prescribed drugs by claims were Carbidopa-Levodopa, Donepezil HCl and Gabapentin.
Has Dr. Sandra L. Shefrin received payments from drug or device companies?
CMS Open Payments shows $53 in general payments to Dr. Shefrin from 2 companies from 2017 to 2023. The largest total came from Abbvie Inc.
How long has Dr. Sandra L. Shefrin been practicing?
Dr. Shefrin graduated from medical school in 1978, 48 years ago.
Does Dr. Sandra L. Shefrin do research?
Dmand AI links 4 publications to Dr. Shefrin.
Who does Dr. Sandra L. Shefrin publish with?
Dr. Shefrin's most frequent co-authors are Michael J. Aminoff, MD (3 shared papers) and Douglas Sproul Goodin (3 shared papers).
What insurance does Dr. Sandra L. Shefrin accept?
Dr. Shefrin is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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