Alyssa Milliron, MD
Internal Medicine Physician · Chico, CA
Alyssa Milliron, MD is an internal medicine physician with a practice address in Chico, California, and NPI 1033640099, issued on Mar 22, 2017. Check the license (California A157920, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alyssa Milliron
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A157920 CA
Self-reported in NPPES; status is on the state search - Practice location
- 680 Cohasset RD, Chico, CA 95926
- Phone
- (530) 342-4395
- Enumerated
- Mar 22, 2017
- Record last updated
- May 22, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (530) 894-2325
- Medicare enrollment
- Enrolled (PECOS I20200610001804); accepts Medicare assignment
- Medical or professional school
- Un Of California, Irvine, College Of Medicine, 2017
- 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 680 Cohasset RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ejaz Ahmed, M.D.Pediatrics Physician1699775734
- Abdullah Al Dwairi, M.D.Internal Medicine Physician1639170806
- Marianna Almanza, PA-CPhysician Assistant1720542491
- Nasrin Ashouian, MDNephrology Physician1053522342
- Marytere Carrasquillo Navarro, MDInternal Medicine Physician1851751408
- Oswald Chan, M.D.Family Medicine Physician1780676882
Verify Alyssa Milliron in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A157920Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average internal medicine physician in 2024
3,895 Medicare Part D claims for 230 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 174 claims were for opioids.
Most prescribed
- Atorvastatin Calcium170 claims
- Gabapentin142 claims
- Levothyroxine Sodium113 claims
- Hydrocodone-Acetaminophen111 claims
- Omeprazole93 claims
- Tamsulosin Hcl85 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: $1,452.58
78 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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 2 group practices
- Ampla HealthChico, CA
- Enloe Health And WellnessChico, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alyssa Milliron among 17,696 internal medicine physician records in California
Alyssa Milliron, 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 2017, is newer than 81% of them.
- NPI issued2017 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2017 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 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
- David Alonso, MDChico, CA 959261467403246
- 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
Common questions
What is Alyssa Milliron, MD's NPI number?
Alyssa Milliron, MD's National Provider Identifier (NPI) is 1033640099, issued on Mar 22, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Alyssa Milliron, MD located?
The NPPES record lists a practice address at 680 Cohasset RD, Chico, CA, 95926. Phone: (530) 342-4395. Providers update this record themselves, so call before visiting.
How can I verify Alyssa Milliron, MD's license?
NPPES lists California license number A157920, 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 Alyssa Milliron, MD prescribe under Medicare Part D?
In 2024, Alyssa Milliron, MD had 3,895 Medicare Part D claims for 230 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.