David G. Alonso, MD
Internal Medicine Physician · Chico, CA
David G. Alonso, MD is an internal medicine physician with a practice address in Chico, California, and NPI 1467403246, issued on May 15, 2006. Check the license (California A112504, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David G. Alonso
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A112504 CA
12929 NH
Self-reported in NPPES; status is on the state search - Practice location
- 564 Rio Lindo Ave Ste 102, Chico, CA 95926
- Phone
- (530) 965-9900
- Enumerated
- May 15, 2006
- Record last updated
- Jan 5, 2023
- Fax
- (530) 965-9265
- Medicaid IDs
- 1467403246 CA
1235497611 CA
30212766 NH - Medicare enrollment
- Enrolled (PECOS I20101030000085); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2003
- 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 564 Rio Lindo Ave Ste 102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joy Ackles, FNPFamily Nurse Practitioner1063771277
- Madison Dempewolf, FNP, RNFamily Nurse Practitioner1003434226
- Katherine Stentzel, NPAcute Care Nurse Practitioner1518829357
Verify David G. Alonso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A112504Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% more Medicare Part D claims than the average internal medicine physician in 2024
6,031 Medicare Part D claims for 450 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 189 claims were for opioids.
Most prescribed
- Atorvastatin Calcium361 claims
- Levothyroxine Sodium191 claims
- Gabapentin189 claims
- Mounjaro175 claims
- Amlodipine Besylate136 claims
- Lisinopril128 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: $689.91
32 payments; by number, the most common kind was food and beverage; the largest payer was Amgen 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
- Bass Medical GroupChico, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David G. Alonso among 17,696 internal medicine physician records in California
David G. Alonso, MD 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
- Graduated2003 · median 2004 among the 11,065 with a school on file
- Record last updated2023 · 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 Chico → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Abdullah Al Dwairi, M.D.Chico, CA 959261639170806
- Julie Archer, M.D.Chico, CA 959261962409573
- Arthur Brinckerhoff, M.D.Chico, CA 959261023049624
- Sally Foltz, MDChico, CA 959261447252564
- Barry Furst, MDChico, CA 959261295863462
- Larry Hsu, MDChico, CA 959261215935622
- Roberto Illa, M.D.Chico, CA 959261447248224
- John Kremer, MDChico, CA 959261427160498
Common questions
What is David G. Alonso, MD's NPI number?
David G. Alonso, MD's National Provider Identifier (NPI) is 1467403246, issued on May 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David G. Alonso, MD located?
The NPPES record lists a practice address at 564 Rio Lindo Ave Ste 102, Chico, CA, 95926. Phone: (530) 965-9900. Providers update this record themselves, so call before visiting.
How can I verify David G. Alonso, MD's license?
NPPES lists California license number A112504, 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 G. Alonso, MD prescribe under Medicare Part D?
In 2024, David G. Alonso, MD had 6,031 Medicare Part D claims for 450 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.