Robert Lowsky, MD
Hematology (Internal Medicine) Physician · Stanford, CA
Robert Lowsky, MD is a hematology (internal medicine) physician with a practice address in Stanford, California, and NPI 1083756308, issued on Feb 13, 2007. Check the license (California C50659, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert Lowsky
- Credential
- MD
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- C50659 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Feb 13, 2007
- Record last updated
- Apr 12, 2024
- Medicaid ID
- 00C506590 CA
- Medicare enrollment
- Enrolled (PECOS I20081020000337); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology (internal medicine) physician records → All 175 in California → Look up another NPI →
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Verify Robert Lowsky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C50659Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% fewer Medicare Part D claims than the average hematology (internal medicine) physician in 2024
477 Medicare Part D claims for 54 beneficiaries, against an average of 496 among the 1,036 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Acyclovir63 claims
- Jakafi59 claims
- Rezurock40 claims
- Sulfamethoxazole-Trimethoprim39 claims
- Prednisone31 claims
- Pantoprazole Sodium19 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): 76.5 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).
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Robert Lowsky among 175 hematology (internal medicine) physician records in California
Robert Lowsky, MD is one of 175 hematology (internal medicine) physician records with a practice address in California. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 35% of them.
- NPI issued2007 · 35% of these records are older, 49% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 78% of these records are
- Graduated1988 · median 2006 among the 135 with a school on file
- Record last updated2024 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
44 hematology (internal medicine) physician records list a practice address in Stanford
They are 44 of the 5,606 NPPES records with a practice address in Stanford, and 175 hematology (internal medicine) physician records in California.
All 175 in California → Every provider in Stanford → Hematology (Internal Medicine) Physician nationwide →
The 8 hematology (internal medicine) physician records with the nearest ZIP codes
- Judy Cheng, MDStanford, CA 943051568577906
- Wei Ding, MDStanford, CA 943051265454201
- Calvin Kuo, M.D. PH.D.Stanford, CA 943051609954825
- Lawrence Leung, M.D.Stanford, CA 943051356388383
- Ravindra Majeti, M.D.Stanford, CA 943051326195447
- James Malone, MDStanford, CA 943051457343113
- Beth Martin, MDStanford, CA 943051134154420
- Bruno Medeiros, MDStanford, CA 943051760420657
Common questions
What is Robert Lowsky, MD's NPI number?
Robert Lowsky, MD's National Provider Identifier (NPI) is 1083756308, issued on Feb 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Robert Lowsky, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Robert Lowsky, MD's license?
NPPES lists California license number C50659, 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 Robert Lowsky, MD prescribe under Medicare Part D?
In 2024, Robert Lowsky, MD had 477 Medicare Part D claims for 54 beneficiaries; the average among hematology (internal medicine) physician prescribers was 496. Part D covers Medicare prescriptions only.
What is Robert Lowsky, MD's MIPS final score?
The 2023 MIPS final score is 76.5 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.