Caleb Warren Hirsch, MD
Internal Medicine Physician · West Hills, CA
Caleb Warren Hirsch, MD is an internal medicine physician with a practice address in West Hills, California, and NPI 1619976800, issued on Jul 19, 2005. Check the license (California G62063, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Caleb Warren Hirsch
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G62063 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23101 Sherman PL, West Hills, CA 91307
- Phone
- (818) 676-4802
- Enumerated
- Jul 19, 2005
- Record last updated
- Oct 8, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (818) 676-4810
- Medicaid ID
- 00G620630 CA
- Medicare enrollment
- Enrolled (PECOS I20070424000714); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 1986
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 23101 Sherman PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Caleb Warren Hirsch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G62063Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% more Medicare Part D claims than the average internal medicine physician in 2024
6,117 Medicare Part D claims for 335 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 135 claims were for opioids.
Most prescribed
- Eliquis272 claims
- Atorvastatin Calcium230 claims
- Levothyroxine Sodium185 claims
- Quetiapine Fumarate170 claims
- Gabapentin160 claims
- Amlodipine Besylate141 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 MIPS final score for 2023 (Medicare payment program): 87.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Caleb Warren Hirsch among 17,696 internal medicine physician records in California
Caleb Warren Hirsch, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1986 · median 2004 among the 11,065 with a school on file
- Record last updated2012 · 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).
22 internal medicine physician records list a practice address in West Hills
They are 22 of the 708 NPPES records with a practice address in West Hills, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in West Hills → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Shahab Attarchi, MDWest Hills, CA 913071902982408
- Barbara Callahan, M.D.West Hills, CA 913071124111653
- Warren Churg, M.D.West Hills, CA 913071629020490
- Christopher Hage, M.D.West Hills, CA 913071043397482
- Robert Hanson, M.D.West Hills, CA 913071447213616
- Mohammed Iqbal, MDWest Hills, CA 913071578574596
- Bruce Jacobson, M.D.West Hills, CA 913071558314971
- Marc Lavin, M.D.West Hills, CA 913071326048638
Common questions
What is Caleb Warren Hirsch, MD's NPI number?
Caleb Warren Hirsch, MD's National Provider Identifier (NPI) is 1619976800, issued on Jul 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Caleb Warren Hirsch, MD located?
The NPPES record lists a practice address at 23101 Sherman PL, West Hills, CA, 91307. Phone: (818) 676-4802. Providers update this record themselves, so call before visiting.
How can I verify Caleb Warren Hirsch, MD's license?
NPPES lists California license number G62063, 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 Caleb Warren Hirsch, MD prescribe under Medicare Part D?
In 2024, Caleb Warren Hirsch, MD had 6,117 Medicare Part D claims for 335 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Caleb Warren Hirsch, MD's MIPS final score?
The 2023 MIPS final score is 87.8 of 100. 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.