Mark Howard Hyman, MD
Internal Medicine Physician · Los Angeles, CA
Mark Howard Hyman, MD is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1598784365, issued on Jul 19, 2006. Check the license (California G55008, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Howard Hyman
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G55008 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10780 Santa Monica Blvd Ste 408, Los Angeles, CA 90025
- Phone
- (310) 234-0400
- Enumerated
- Jul 19, 2006
- Record last updated
- Jan 25, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (310) 234-9400
- Medicare enrollment
- Enrolled (PECOS I20120111000353); may accept Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1984
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Mark Howard Hyman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G55008Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,211 Medicare Part D claims for 74 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Rosuvastatin Calcium96 claims
- Jardiance74 claims
- Atorvastatin Calcium64 claims
- Metformin Hcl62 claims
- Rybelsus45 claims
- Amlodipine Besylate42 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.
Mark Howard Hyman among 17,696 internal medicine physician records in California
Mark Howard Hyman, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1984 · 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).
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 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
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Common questions
What is Mark Howard Hyman, MD's NPI number?
Mark Howard Hyman, MD's National Provider Identifier (NPI) is 1598784365, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Howard Hyman, MD located?
The NPPES record lists a practice address at 10780 Santa Monica Blvd Ste 408, Los Angeles, CA, 90025. Phone: (310) 234-0400. Providers update this record themselves, so call before visiting.
How can I verify Mark Howard Hyman, MD's license?
NPPES lists California license number G55008, 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 Mark Howard Hyman, MD prescribe under Medicare Part D?
In 2024, Mark Howard Hyman, MD had 1,211 Medicare Part D claims for 74 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.