Mark Steven Grossman, MD
Internal Medicine Physician · Los Angeles, CA
Mark Steven Grossman, MD is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1457370736, issued on Jul 18, 2006. Check the license (California G79624, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Steven Grossman
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G79624 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Medical Plaza, Los Angeles, CA 90095
- Phone
- (310) 208-7777
- Enumerated
- Jul 18, 2006
- Record last updated
- Jun 24, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicaid ID
- 00G796240 CA
- Medicare enrollment
- Enrolled (PECOS I20090807000345); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 200 Medical Plaza
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Steven Grossman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G79624Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,651 Medicare Part D claims for 173 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium221 claims
- Amlodipine Besylate115 claims
- Losartan Potassium70 claims
- Lisinopril69 claims
- Rosuvastatin Calcium63 claims
- Levothyroxine Sodium59 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
- The Regents OF The University OF CaliforniaLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Steven Grossman among 17,696 internal medicine physician records in California
Mark Steven Grossman, 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
- Graduated1993 · median 2004 among the 11,065 with a school on file
- Record last updated2010 · 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 →
The 8 internal medicine physician records with the nearest ZIP codes
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- Benjamin Ansell, MDLos Angeles, CA 900951770516882
- Arnold Brickman, MDLos Angeles, CA 900951447284906
- Arleen Brown, MDLos Angeles, CA 900951720013618
- Richard Buyalos, MDLos Angeles, CA 900951720012123
- Basit Chaudhry, MDLos Angeles, CA 900951992739460
Common questions
What is Mark Steven Grossman, MD's NPI number?
Mark Steven Grossman, MD's National Provider Identifier (NPI) is 1457370736, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Steven Grossman, MD located?
The NPPES record lists a practice address at 200 Medical Plaza, Los Angeles, CA, 90095. Phone: (310) 208-7777. Providers update this record themselves, so call before visiting.
How can I verify Mark Steven Grossman, MD's license?
NPPES lists California license number G79624, 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 Steven Grossman, MD prescribe under Medicare Part D?
In 2024, Mark Steven Grossman, MD had 1,651 Medicare Part D claims for 173 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.