Robert Mark Cohen, DDS
Periodontics · Los Angeles, CA
Robert Mark Cohen, DDS is a periodontics with a practice address in Los Angeles, California, and NPI 1235292095, issued on Dec 19, 2006. Check the license (California 33424, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Robert Mark Cohen
- Credential
- DDS
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 33424 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3932 Wilshire Blvd, Los Angeles, CA 90010
- Phone
- (213) 386-3336
- Enumerated
- Dec 19, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (213) 386-2985
- Entity
- Type 1 · individual
8 nearest periodontics records → All 929 in California → Look up another NPI →
Also registered at 3932 Wilshire Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- John Borel, D.D.S.General Practice Dentistry1457453904
- Nancy Goebel, D.D.S.Orthodontics and Dentofacial Orthopedics Dentistry1861661555
- Jerry Green, D.D.S.Endodontics1437295284
Verify Robert Mark Cohen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 33424Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average periodontics in 2024
42 Medicare Part D claims for 20 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin16 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.
Industry payments in 2024: $16.87
1 payment: food and beverage; the largest payer was Align Technology, Inc. The 2,966 providers of this specialty with any payment received $1,338.41 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.
Robert Mark Cohen among 929 periodontics records in California
Robert Mark Cohen, DDS is one of 929 periodontics records with a practice address in California. 69% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 71% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in California
There are 929 periodontics records in California.
All 929 in California → Every provider in Los Angeles → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Talia Lebovitz, DDSLos Angeles, CA 900101477897494
- Heejoo Lee, DDSLos Angeles, CA 900101518135656
- Kim Austin, D.D.S.Los Angeles, CA 900081053595926
- Robert Lacrampe, DDSLos Angeles, CA 900121063057008
- Joshua Shayefar, DMDLos Angeles, CA 900131346780715
- Robin Wakabayashi, DDS, MSLos Angeles, CA 900131003925769
- Na Eun Chung, DMDLos Angeles, CA 900061831754100
- Sangmoo Lee, D.D.S.Los Angeles, CA 900051457599656
Common questions
What is Robert Mark Cohen, DDS's NPI number?
Robert Mark Cohen, DDS's National Provider Identifier (NPI) is 1235292095, issued on Dec 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Mark Cohen, DDS located?
The NPPES record lists a practice address at 3932 Wilshire Blvd, Los Angeles, CA, 90010. Phone: (213) 386-3336. Providers update this record themselves, so call before visiting.
How can I verify Robert Mark Cohen, DDS's license?
NPPES lists California license number 33424, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Robert Mark Cohen, DDS prescribe under Medicare Part D?
In 2024, Robert Mark Cohen, DDS had 42 Medicare Part D claims for 20 beneficiaries; the average among periodontics prescribers was 277. 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.