Astred Eileen Castro
Internal Medicine Physician · Sacramento, CA
Astred Eileen Castro is an internal medicine physician with a practice address in Sacramento, California, and NPI 1134821176, issued on Mar 21, 2023. Check the license (California A197283, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Astred Eileen Castro
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A197283 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4150 V St # 1100, Sacramento, CA 95817
- Phone
- (916) 734-2737
- Enumerated
- Mar 21, 2023
- Record last updated
- Feb 20, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4150 V St # 1100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Astred Eileen Castro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A197283Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
55 Medicare Part D claims for 23 beneficiaries, against an average of 3,176 among the 108,855 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.
Astred Eileen Castro among 17,696 internal medicine physician records in California
Astred Eileen Castro is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
601 internal medicine physician records list a practice address in Sacramento
They are 601 of the 33,083 NPPES records with a practice address in Sacramento, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Sacramento → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Nelson Chiang, M.D.Sacramento, CA 958171326021494
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- Lynne Do, M.D.Sacramento, CA 958171386627644
- Jason Ferries, M.D.Sacramento, CA 958171609859974
- Steven Griffen, M.D.Sacramento, CA 958171053393835
- Diane Haddock, M.D.Sacramento, CA 958171013991553
- Calvin Hirsch, MDSacramento, CA 958171073597332
- Hershan Johl, MDSacramento, CA 958171255314399
Common questions
What is Astred Eileen Castro's NPI number?
Astred Eileen Castro's National Provider Identifier (NPI) is 1134821176, issued on Mar 21, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Astred Eileen Castro located?
The NPPES record lists a practice address at 4150 V St # 1100, Sacramento, CA, 95817. Phone: (916) 734-2737. Providers update this record themselves, so call before visiting.
How can I verify Astred Eileen Castro's license?
NPPES lists California license number A197283, 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 Astred Eileen Castro prescribe under Medicare Part D?
In 2024, Astred Eileen Castro had 55 Medicare Part D claims for 23 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.