Cassandra Thanh, MD
Hospitalist Physician · Palo Alto, CA
Cassandra Thanh, MD is a hospitalist physician with a practice address in Palo Alto, California, and NPI 1083316889, issued on Mar 17, 2023. Check the license (California A206043, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cassandra Thanh
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A206043 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Palo Alto, CA 94304
- Phone
- (650) 723-4000
- Enumerated
- Mar 17, 2023
- Record last updated
- Jul 9, 2026
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Cassandra Thanh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A206043Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average hospitalist physician in 2024
54 Medicare Part D claims for 26 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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.
Cassandra Thanh among 3,099 hospitalist physician records in California
Cassandra Thanh, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 98% of them.
- NPI issued2023 · 98% of these records are older, under 1% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileNo · 81% of these records are
- Record last updated2026 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
112 hospitalist physician records list a practice address in Palo Alto
They are 112 of the 7,617 NPPES records with a practice address in Palo Alto, and 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Palo Alto → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Francisco Alvarez, MDPalo Alto, CA 943041174525612
- Aurelia Balan, MDPalo Alto, CA 943041912950510
- Kathleen Boyd, MDPalo Alto, CA 943041588600746
- Lauren Destino, MDPalo Alto, CA 943041538245410
- Christophe Gimmler, M.D.Palo Alto, CA 943041679696637
- Sarah Hilgenberg, MDPalo Alto, CA 943041457541393
- Siobhan Hopkins, MDPalo Alto, CA 943041679678288
- Joseph Kim, MDPalo Alto, CA 943041487742946
Common questions
What is Cassandra Thanh, MD's NPI number?
Cassandra Thanh, MD's National Provider Identifier (NPI) is 1083316889, issued on Mar 17, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Cassandra Thanh, MD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Palo Alto, CA, 94304. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Cassandra Thanh, MD's license?
NPPES lists California license number A206043, 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 Cassandra Thanh, MD prescribe under Medicare Part D?
In 2024, Cassandra Thanh, MD had 54 Medicare Part D claims for 26 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
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.