Rodolfo Cadang, M.D.
Internal Medicine Physician · Hercules, CA
Rodolfo Cadang, M.D. is an internal medicine physician with a practice address in Hercules, California, and NPI 1508898990, issued on Jul 7, 2006. Check the license (California A52818, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rodolfo Cadang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A52818 CA
Self-reported in NPPES; status is on the state search - Practice location
- 500 Alfred Nobel Dr, Hercules, CA 94547
- Phone
- (510) 741-2111
- Enumerated
- Jul 7, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090903000177); accepts Medicare assignment
- 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 500 Alfred Nobel Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Rodolfo Cadang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A52818Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average internal medicine physician in 2024
4,114 Medicare Part D claims for 265 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 41 claims were for opioids.
Most prescribed
- Amlodipine Besylate255 claims
- Losartan Potassium255 claims
- Rosuvastatin Calcium193 claims
- Atorvastatin Calcium187 claims
- Metoprolol Succinate120 claims
- Metformin Hcl Er111 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: $79.88
3 payments; by number, the most common kind was food and beverage; the largest payer was Ironwood 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
- Sycamore Medical Group IncHercules, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rodolfo Cadang among 17,696 internal medicine physician records in California
Rodolfo Cadang, 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 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1984 · median 2004 among the 11,065 with a school on file
- Record last updated2007 · 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).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Hercules → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Shiven Chaudhry, MDCastro Valley, CA 945461528594801
- Andrea Dhaliwal, M.D.Castro Valley, CA 945461548557077
- Diana Hess, MDCastro Valley, CA 945461295296275
- Richard Ho, M. D.Castro Valley, CA 945461548283005
- Nidhi Johri, M.DCastro Valley, CA 945461285811489
- Samir Kadada, M.D.Castro Valley, CA 945461952315202
- Donald Knotts, MEDICAL DOCTORCastro Valley, CA 945461790858611
- Nazia Mir, MDCastro Valley, CA 945461598128415
Common questions
What is Rodolfo Cadang, M.D.'s NPI number?
Rodolfo Cadang, M.D.'s National Provider Identifier (NPI) is 1508898990, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rodolfo Cadang, M.D. located?
The NPPES record lists a practice address at 500 Alfred Nobel Dr, Hercules, CA, 94547. Phone: (510) 741-2111. Providers update this record themselves, so call before visiting.
How can I verify Rodolfo Cadang, M.D.'s license?
NPPES lists California license number A52818, 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 Rodolfo Cadang, M.D. prescribe under Medicare Part D?
In 2024, Rodolfo Cadang, M.D. had 4,114 Medicare Part D claims for 265 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.