David A. Ruckman, M.D.
Internal Medicine Physician · Fullerton, CA
David A. Ruckman, M.D. is an internal medicine physician with a practice address in Fullerton, California, and NPI 1285620658, issued on Sep 21, 2005. Check the license (California G67884, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David A. Ruckman
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G67884 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2141 N Harbor Blvd Ste 25000, Fullerton, CA 92835
- Phone
- (714) 626-8650
- Enumerated
- Sep 21, 2005
- Record last updated
- Nov 10, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (714) 626-8694
- Medicare enrollment
- Enrolled (PECOS I20041207001268); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1988
- 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 2141 N Harbor Blvd Ste 25000
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chizomam Abanobi, NPFamily Nurse Practitioner1447566781
- Amy Alias, MDInternal Medicine Physician1306015607
- Julie BeckFamily Nurse Practitioner1346407293
- Hyacinth Lyre CabreraAmbulatory Care Registered Nurse1427949437
- Vanessa Franco, PA-CPhysician Assistant1609402114
- Jay Kim, M.D.Rheumatology Physician1811984123
Verify David A. Ruckman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G67884Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.9 times the Medicare Part D claims of the average internal medicine physician in 2024
12,387 Medicare Part D claims for 879 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 339 claims were for opioids.
Most prescribed
- Atorvastatin Calcium798 claims
- Amlodipine Besylate620 claims
- Levothyroxine Sodium503 claims
- Losartan Potassium490 claims
- Pantoprazole Sodium319 claims
- Furosemide278 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: $64.04
3 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer 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
- Providence Medical FoundationFullerton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David A. Ruckman among 17,696 internal medicine physician records in California
David A. Ruckman, M.D. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1988 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
44 internal medicine physician records list a practice address in Fullerton
They are 44 of the 5,437 NPPES records with a practice address in Fullerton, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Fullerton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rajiv Bhavsar, M.D.Fullerton, CA 928351477550648
- Bradley Borsari, MDFullerton, CA 928351104826619
- Eugene BostonFullerton, CA 928351023019965
- Ruben Cabral, MDFullerton, CA 928351568458008
- Friedhelm Cordes, M.D.Fullerton, CA 928351588650931
- Robert Francis, M.D.Fullerton, CA 928351366439804
- Leo Garcia, M.D.Fullerton, CA 928351831185792
- Pius Kim, M.D.Fullerton, CA 928351003863317
Common questions
What is David A. Ruckman, M.D.'s NPI number?
David A. Ruckman, M.D.'s National Provider Identifier (NPI) is 1285620658, issued on Sep 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David A. Ruckman, M.D. located?
The NPPES record lists a practice address at 2141 N Harbor Blvd Ste 25000, Fullerton, CA, 92835. Phone: (714) 626-8650. Providers update this record themselves, so call before visiting.
How can I verify David A. Ruckman, M.D.'s license?
NPPES lists California license number G67884, 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 David A. Ruckman, M.D. prescribe under Medicare Part D?
In 2024, David A. Ruckman, M.D. had 12,387 Medicare Part D claims for 879 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.