Dennis L. Clark, MD
Internal Medicine Physician · Long Beach, CA
Dennis L. Clark, MD is an internal medicine physician with a practice address in Long Beach, California, and NPI 1699700849, issued on Jul 12, 2006. Check the license (California G25400, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Dennis L. Clark
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G25400 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3816 Woodruff Ave, Long Beach, CA 90808
- Phone
- (562) 420-8679
- Enumerated
- Jul 12, 2006
- Record last updated
- Sep 7, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100305000383); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 3816 Woodruff Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Dennis L. Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G25400Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average internal medicine physician in 2024
8,861 Medicare Part D claims for 438 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 467 claims were for opioids.
Most prescribed
- Atorvastatin Calcium654 claims
- Rosuvastatin Calcium372 claims
- Amlodipine Besylate353 claims
- Lisinopril340 claims
- Farxiga322 claims
- Alprazolam248 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: $1,072.91
39 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals 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 one group practice
- Prohealth Partners, A Medical GroupLong Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
221 internal medicine physician records list a practice address in Long Beach
They are 221 of the 13,650 NPPES records with a practice address in Long Beach, and 17,696 internal medicine physician records in California.
All 221 in Long Beach → All 17,696 in California → Every provider in Long Beach →
Other internal medicine physician records in California
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- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Dennis L. Clark, MD's NPI number?
Dennis L. Clark, MD's National Provider Identifier (NPI) is 1699700849, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis L. Clark, MD located?
The NPPES record lists a practice address at 3816 Woodruff Ave, Long Beach, CA, 90808. Phone: (562) 420-8679. Providers update this record themselves, so call before visiting.
How can I verify Dennis L. Clark, MD's license?
NPPES lists California license number G25400, 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 Dennis L. Clark, MD prescribe under Medicare Part D?
In 2024, Dennis L. Clark, MD had 8,861 Medicare Part D claims for 438 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.