Mark Irwin Singer, M.D.
Otolaryngology Physician · Venice, CA
Mark Irwin Singer, M.D. is an otolaryngology physician with a practice address in Venice, California, and NPI 1841249109, issued on May 6, 2006. Check the license (California G70069, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Irwin Singer
- Credential
- M.D.
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- G70069 CA
Self-reported in NPPES; status is on the state search - Practice location
- 723 Crestmoore Place, Venice, CA 90291
- Phone
- (415) 328-8787
- Enumerated
- May 6, 2006
- Record last updated
- Dec 18, 2024
- Fax
- (916) 854-6854
- Medicaid ID
- 0G7006900 CA
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 1,212 in California → Look up another NPI →
Verify Mark Irwin Singer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G70069Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average otolaryngology physician in 2024
78 Medicare Part D claims for 13 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of 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 Irwin Singer among 1,212 otolaryngology physician records in California
Mark Irwin Singer, M.D. is one of 1,212 otolaryngology physician records with a practice address in California. 80% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 67% of these records are
- Record last updated2024 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in California
There are 1,212 otolaryngology physician records in California.
All 1,212 in California → Every provider in Venice → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Kathryn Kreicher, MDMarina Del Rey, CA 902921407387822
- Farhad Sigari, MDMarina Del Rey, CA 902921841224177
- Marie Chantal Trinque Courchesne, MDPacific Palisades, CA 902721962552810
- Gary Ford, M.D.Gardena, CA 902471780634022
- John Lee, MDEl Segundo, CA 902451114910239
- Sameer Ahmed, M.D.Downey, CA 902421225328461
- John Farinacci, M.D.Downey, CA 902421629012323
- Tiffany Genova, MDDowney, CA 902421740717875
Common questions
What is Mark Irwin Singer, M.D.'s NPI number?
Mark Irwin Singer, M.D.'s National Provider Identifier (NPI) is 1841249109, issued on May 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Irwin Singer, M.D. located?
The NPPES record lists a practice address at 723 Crestmoore Place, Venice, CA, 90291. Phone: (415) 328-8787. Providers update this record themselves, so call before visiting.
How can I verify Mark Irwin Singer, M.D.'s license?
NPPES lists California license number G70069, 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 Irwin Singer, M.D. prescribe under Medicare Part D?
In 2024, Mark Irwin Singer, M.D. had 78 Medicare Part D claims for 13 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.