Thomas Edward Hascall, MD
Internal Medicine Physician · Los Angeles, CA
Thomas Edward Hascall, MD is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1245315324, issued on Oct 26, 2006. Check the license (California A74598, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas Edward Hascall
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A74598 CA
Self-reported in NPPES; status is on the state search - Practice location
- 335 N LA Brea Ave, Los Angeles, CA 90036
- Phone
- (323) 634-3850
- Enumerated
- Oct 26, 2006
- Record last updated
- Jan 6, 2023
- Fax
- (323) 938-9958
- Medicare enrollment
- Enrolled (PECOS I20051102001176); accepts Medicare assignment
- Medical or professional school
- R Franklin University Of Med & Sci/Chicago Medical School, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 335 N LA Brea Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas Edward Hascall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A74598Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,786 Medicare Part D claims for 230 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 87 claims were for opioids.
Most prescribed
- Atorvastatin Calcium135 claims
- Amlodipine Besylate107 claims
- Alprazolam68 claims
- Losartan Potassium62 claims
- Levothyroxine Sodium58 claims
- Hydrocodone-Acetaminophen57 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.
Bills Medicare through one group practice
- Regents OF The University OF CaliforniaGlendale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 1,423 in Los Angeles → All 17,696 in California → Every provider in Los Angeles →
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Common questions
What is Thomas Edward Hascall, MD's NPI number?
Thomas Edward Hascall, MD's National Provider Identifier (NPI) is 1245315324, issued on Oct 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Edward Hascall, MD located?
The NPPES record lists a practice address at 335 N LA Brea Ave, Los Angeles, CA, 90036. Phone: (323) 634-3850. Providers update this record themselves, so call before visiting.
How can I verify Thomas Edward Hascall, MD's license?
NPPES lists California license number A74598, 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 Thomas Edward Hascall, MD prescribe under Medicare Part D?
In 2024, Thomas Edward Hascall, MD had 1,786 Medicare Part D claims for 230 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.