Matthew Greg Lefferman, DO
Internal Medicine Physician · Los Angeles, CA
Matthew Greg Lefferman, DO is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1184622417, issued on Jul 11, 2005. Check the license (California 20A8857, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Matthew Greg Lefferman
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A8857 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9233 W. Pico Blvd., Los Angeles, CA 90035
- Phone
- (310) 356-8146
- Enumerated
- Jul 11, 2005
- Record last updated
- Jan 13, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (310) 356-8142
- Medicare enrollment
- Enrolled (PECOS I20050822000536); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Matthew Greg Lefferman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A8857Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14.3 times the Medicare Part D claims of the average internal medicine physician in 2024
45,367 Medicare Part D claims for 1,088 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 666 claims were for opioids.
Most prescribed
- Levothyroxine Sodium1,938 claims
- Quetiapine Fumarate1,849 claims
- Atorvastatin Calcium1,782 claims
- Amlodipine Besylate1,398 claims
- Trazodone Hcl1,365 claims
- Furosemide1,323 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $56.49
1 payment: food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Access Healthcare Associates, A Medical CorporationLos Angeles, CA
- J M Geiss DO ApcSanta Ana, CA
- Senior Doc Integrated Med PCCorona Del Mar, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Greg Lefferman among 17,696 internal medicine physician records in California
Matthew Greg Lefferman, DO 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
- Graduated2001 · median 2004 among the 11,065 with a school on file
- Record last updated2011 · 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
- Emery Chang, MDLos Angeles, CA 900351649221383
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- Jeffrey Hirsch, M.D.Los Angeles, CA 900351043354640
- Shahriar Jarchi, M.D.Los Angeles, CA 900351417008772
- Imanuel Khalili, M.D.Los Angeles, CA 900351447546627
- Michel Mazouz, M.D.Los Angeles, CA 900351679628036
- Sheryl Neuman, M.D.Los Angeles, CA 900351528310208
- Naghmeh Paktan, D.O.Los Angeles, CA 900351376876169
Common questions
What is Matthew Greg Lefferman, DO's NPI number?
Matthew Greg Lefferman, DO's National Provider Identifier (NPI) is 1184622417, issued on Jul 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Greg Lefferman, DO located?
The NPPES record lists a practice address at 9233 W. Pico Blvd., Los Angeles, CA, 90035. Phone: (310) 356-8146. Providers update this record themselves, so call before visiting.
How can I verify Matthew Greg Lefferman, DO's license?
NPPES lists California license number 20A8857, 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 Matthew Greg Lefferman, DO prescribe under Medicare Part D?
In 2024, Matthew Greg Lefferman, DO had 45,367 Medicare Part D claims for 1,088 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Matthew Greg Lefferman, DO's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.