Marc J. Gross, D.D.S.
Periodontics · Encino, CA
Marc J. Gross, D.D.S. is a periodontics with a practice address in Encino, California, and NPI 1689615130, issued on Jun 8, 2006. Check the license (California DX35724, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marc J. Gross
- Credential
- D.D.S.
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- DX35724 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5400 Balboa Blvd, Encino, CA 91316
- Phone
- (818) 990-5220
- Enumerated
- Jun 8, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (818) 990-5621
- Entity
- Type 1 · individual
8 nearest periodontics records → All 929 in California → Look up another NPI →
Also registered at 5400 Balboa Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Astrachan, D.D.S.Dentist1881693448
- Daniel Azani, D.D.S., M.S.Orthodontics and Dentofacial Orthopedics Dentistry1417090473
- Carl Blau, M.D.Specialist1598774259
- Timothy Casarez, MDPediatric Cardiology Physician1992782148
- Robert Collins, M.D.Internal Medicine Physician1669671350
- Tracey Cooperstein, DMDGeneral Practice Dentistry1518190248
Verify Marc J. Gross in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license DX35724Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average periodontics in 2024
96 Medicare Part D claims for 63 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
- Amoxicillin52 claims
- Azithromycin12 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: $2,800.00
1 payment: honoraria; the largest payer was Hiossen, 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.
Marc J. Gross among 929 periodontics records in California
Marc J. Gross, D.D.S. 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 updated2026 · 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 Encino → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Alfred Penhaskashi, DDSEncino, CA 913161740368117
- Robert Jones, D.D.S.Newbury Park, CA 913201346309176
- Alex Lopez, DDSNewbury Park, CA 913201992969893
- Farideh Amin, DDSChatsworth, CA 913111558546754
- Sanda Moldovan, DDSSanta Clarita, CA 913211205931193
- Farshid Ariz, D.M.D.Northridge, CA 913251760842009
- Mehrnoosh Dianati, DDSWinnetka, CA 913061023263548
- Menachem Oren, DMDCanoga Park, CA 913031073761334
Common questions
What is Marc J. Gross, D.D.S.'s NPI number?
Marc J. Gross, D.D.S.'s National Provider Identifier (NPI) is 1689615130, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marc J. Gross, D.D.S. located?
The NPPES record lists a practice address at 5400 Balboa Blvd, Encino, CA, 91316. Phone: (818) 990-5220. Providers update this record themselves, so call before visiting.
How can I verify Marc J. Gross, D.D.S.'s license?
NPPES lists California license number DX35724, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Marc J. Gross, D.D.S. prescribe under Medicare Part D?
In 2024, Marc J. Gross, D.D.S. had 96 Medicare Part D claims for 63 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.