Mark Farber, MD, PHD
Internal Medicine Physician · Sherman Oaks, CA
Mark Farber, MD, PHD is an internal medicine physician with a practice address in Sherman Oaks, California, and NPI 1033552187, issued on Apr 8, 2013. Check the license (California A141401, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Farber
- Credential
- MD, PHD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A141401 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4849 Van Nuys Blvd Ste 202, Sherman Oaks, CA 91403
- Phone
- (818) 784-5300
- Enumerated
- Apr 8, 2013
- Record last updated
- Aug 4, 2025
- Fax
- (302) 219-6613
- Medicare enrollment
- Enrolled (PECOS I20161110000296); 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 →
Also registered at 4849 Van Nuys Blvd Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Farber in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A141401Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,685 Medicare Part D claims for 355 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 203 claims were for opioids.
Most prescribed
- Atorvastatin Calcium357 claims
- Amlodipine Besylate301 claims
- Losartan Potassium300 claims
- Rosuvastatin Calcium266 claims
- Gabapentin265 claims
- Metformin Hcl244 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): 58.5 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).
Industry payments in 2024: $948.02
41 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Mark Farber among 17,696 internal medicine physician records in California
Mark Farber, MD, PHD 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 2013, is newer than 71% of them.
- NPI issued2013 · 71% of these records are older, 26% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2013 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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).
25 internal medicine physician records list a practice address in Sherman Oaks
They are 25 of the 2,691 NPPES records with a practice address in Sherman Oaks, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Sherman Oaks → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Amir Bahadori, M.D.Sherman Oaks, CA 914031518992585
- Dale Brent, MDSherman Oaks, CA 914031992886618
- Edmond Derderian, M.D.Sherman Oaks, CA 914031114258944
- Jeffrey Hay, M.D.Sherman Oaks, CA 914031336264993
- Michael Kirsch, MDSherman Oaks, CA 914031376602300
- Marina Levin, M.D.Sherman Oaks, CA 914031700128451
- Oleg Liakhovetski, M.D.Sherman Oaks, CA 914031154584316
- Edward Marshall, M.D.Sherman Oaks, CA 914031972743904
Common questions
What is Mark Farber, MD, PHD's NPI number?
Mark Farber, MD, PHD's National Provider Identifier (NPI) is 1033552187, issued on Apr 8, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mark Farber, MD, PHD located?
The NPPES record lists a practice address at 4849 Van Nuys Blvd Ste 202, Sherman Oaks, CA, 91403. Phone: (818) 784-5300. Providers update this record themselves, so call before visiting.
How can I verify Mark Farber, MD, PHD's license?
NPPES lists California license number A141401, 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 Farber, MD, PHD prescribe under Medicare Part D?
In 2024, Mark Farber, MD, PHD had 9,685 Medicare Part D claims for 355 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mark Farber, MD, PHD's MIPS final score?
The 2023 MIPS final score is 58.5 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.