Ruby E. Koshy, M.D.
Neurology Physician · Palo Alto, CA
Ruby E. Koshy, M.D. is a neurology physician with a practice address in Palo Alto, California, and NPI 1578741369, issued on Feb 5, 2008. Check the license (California A105884, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ruby E. Koshy
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- A105884 CA
Self-reported in NPPES; status is on the state search - Practice location
- 795 EL Camino Real, Palo Alto, CA 94301
- Phone
- (650) 853-2975
- Enumerated
- Feb 5, 2008
- Record last updated
- May 15, 2026
- Medicare enrollment
- Enrolled (PECOS I20100914000318); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 795 EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nana Efua Adabie, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1437647732
- Amy Adams, M.D.Dermatology Physician1679643928
- William Adams, DPMFoot & Ankle Surgery Podiatrist1447487830
Verify Ruby E. Koshy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A105884Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average neurology physician in 2024
78 Medicare Part D claims for 19 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Topiramate21 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $141.08
5 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 2 group practices
- Faculty Physicians And Surgeons OF LlusmLoma Linda, CA
- Sutter Bay Medical FoundationSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ruby E. Koshy among 2,339 neurology physician records in California
Ruby E. Koshy, M.D. 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
- Graduated1993 · median 2006 among the 1,628 with a school on file
- Record last updated2026 · 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 Palo Alto → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Norifusa Anegawa, M.D., PH.D.Palo Alto, CA 943011922171099
- Minal Bhanushali, MDPalo Alto, CA 943011265618995
- Kathryn Crozier, M.D.Palo Alto, CA 943011528392610
- Adama Frye, M.D.Palo Alto, CA 943011720100506
- David Gershfield, MDPalo Alto, CA 943011033226758
- Ealon Joelson, MDPalo Alto, CA 943011770658841
- Joseph Lacy, MDPalo Alto, CA 943011568570166
- Lakshmi Leishangthem, M.D.Palo Alto, CA 943011952784308
Common questions
What is Ruby E. Koshy, M.D.'s NPI number?
Ruby E. Koshy, M.D.'s National Provider Identifier (NPI) is 1578741369, issued on Feb 5, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ruby E. Koshy, M.D. located?
The NPPES record lists a practice address at 795 EL Camino Real, Palo Alto, CA, 94301. Phone: (650) 853-2975. Providers update this record themselves, so call before visiting.
How can I verify Ruby E. Koshy, M.D.'s license?
NPPES lists California license number A105884, 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 Ruby E. Koshy, M.D. prescribe under Medicare Part D?
In 2024, Ruby E. Koshy, M.D. had 78 Medicare Part D claims for 19 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Ruby E. Koshy, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.