Nitin Joshi, M.D.
Internal Medicine Physician · Castro Valley, CA
Nitin Joshi, M.D. is an internal medicine physician with a practice address in Castro Valley, California, and NPI 1154541423, issued on Apr 27, 2007. Check the license (California A93287, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nitin Joshi
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A93287 CA
25MA08210300 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 20055 Lake Chabot RD Ste 130, Castro Valley, CA 94546
- Phone
- (510) 888-0657
- Enumerated
- Apr 27, 2007
- Entity
- Type 1 · individual
Also registered at 20055 Lake Chabot RD Ste 130
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Irene Dy, MDMedical Oncology Physician1528393063
- Juliet Fong, PA-CPhysician Assistant1639968670
- Mahboub Noori, MDStudent in an Organized Health Care Education/Training Program1831695915
- Arpeet Shah, M.D.Medical Oncology Physician1558780825
- Kathryn Simms, NPNurse Practitioner1447770359
- Usha Sunkara, M.D,Hematology & Oncology Physician1346267028
Verify Nitin Joshi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A93287Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
79% fewer Medicare Part D claims than the average internal medicine physician in 2024
596 Medicare Part D claims for 226 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Tamoxifen Citrate90 claims
- Eliquis74 claims
- Mirtazapine63 claims
- Gabapentin53 claims
- Xarelto37 claims
- Letrozole33 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.
Industry payments in 2024: $179.95
6 payments, mostly food and beverage; the largest payer was Csl Behring. The 65,274 providers of this specialty with any payment received $2,536.66 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.
One hospital or facility affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
48 internal medicine physician records list a Castro Valley practice address
They are 48 of the 999 NPPES records with a Castro Valley practice address, and 20,403 internal medicine physician records in California.
All 48 in Castro Valley → All 20,403 in California → Every provider in Castro Valley →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Nitin Joshi, M.D.'s NPI number?
Nitin Joshi, M.D.'s National Provider Identifier (NPI) is 1154541423, issued on Apr 27, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Nitin Joshi, M.D. located?
The NPPES record lists a practice address at 20055 Lake Chabot RD Ste 130, Castro Valley, CA, 94546. Phone: (510) 888-0657. Providers update this record themselves, so call before visiting.
How can I verify Nitin Joshi, M.D.'s license?
NPPES lists California license number A93287, 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 Nitin Joshi, M.D. prescribe under Medicare Part D?
In 2024, Nitin Joshi, M.D. had 596 Medicare Part D claims for 226 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.