Dr. Joanne Lynn Alonzo, DO
- Medicare services, 2024
- 6,500
- Medicare patients, 2024
- 2,892
- Part D claims, 2024
- 4,289
- MIPS score, 2024
- 81
- Hospital affiliations
- 5
- Practice address
- 1531 Esplanade, Chico, CA 95926
- Practice phone
- Call (530) 332-7300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Alonzo's professional email, personal email and mobile number
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Dr. Joanne Lynn Alonzo is an internist in Chico, California
Dr. Alonzo practices at Enloe Health in Chico, California, part of Enloe Health.
Dr. Alonzo's NPI, 1124349246, was assigned on June 14, 2010. Dr. Alonzo graduated from Kansas City University of Medicine and Biosciences College of Osteopathic Medicine in 2010. Dr. Alonzo holds Michigan license 5101018832.
- NPI
- 1124349246NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315239217
- NPI enumeration date
- June 14, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (530) 332-7300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joanne Lynn Alonzo practices at Enloe Health in Chico, California
Dr. Alonzo's primary practice is Enloe Health, at 1531 Esplanade, Chico, CA 95926 in Butte County. The practice phone is (530) 332-7300.
- Enloe Health1531 Esplanade, Chico, CA 95926 · Butte CountyPhone(530) 332-7300
Source: Dmand AI Affiliation Data
Dr. Joanne Lynn Alonzo is affiliated with 6 sites of care and 2 medical groups
Dr. Alonzo's primary practice is Enloe Health in Chico, California, part of Enloe Health. Dr. Alonzo is also affiliated with Oroville Hospital. The medical group on file is Chico Hospitalist Group. Dmand AI also links Dr. Alonzo to 3 more hospitals, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Joanne Lynn Alonzo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Alonzo practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Enloe Health | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Enloe Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Joanne Lynn Alonzo is one of 16,751 internists in California
Internal medicine is Dr. Alonzo's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Alonzo is licensed in Michigan.
Specialties and state licenses
- Internal medicine, MichiganPrimary
Clinical focus
Dmand AI lists aneurysm, angioplasty, atrial fibrillation and flutter, cardiomyopathy, cerebrovascular disease, chronic hypertension, coronary artery disease and endocarditis among the conditions Dr. Alonzo treats.
Internists near Dr. Alonzo
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Joanne Lynn Alonzo billed Medicare for 6,500 services in 2024
CMS data shows 6,500 Medicare services from Dr. Alonzo across 30 procedure codes in 2024, for 2,892 Medicare patients. Medicare paid $241,309 for them.
Dr. Alonzo's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 3,9032024: 4,32611%
- Office and hospital visits
- 2023: 1,6972024: 1,7382%
- Imaging
- 2023: 2632024: 2692%
- Other services
- 2023: 02024: 167
Where Dr. Alonzo's Medicare services took place, 2024
- In an office521%
- In a facility6,44899%
Dr. Alonzo compared with the California median for internists, 2024
- Dr. Alonzo
- California median
- Medicare services
- 6,500vs 36118.0 times
- Medicare patients
- 2,892vs 15119.2 times
- Part D claims
- 4,016vs 4219.5 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Alonzo's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Alonzo?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Alonzo and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joanne Lynn Alonzo treated 2,892 Medicare patients in 2024, average age 75
CMS counts 2,892 Medicare patients who saw Dr. Alonzo in 2024. The largest group is 65 to 74, with 1,082 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 29% are also on Medicaid. Their average risk score is 1.75, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Alonzo's median patient age at 76, with 51% women.
Dr. Alonzo's Medicare patients by age, 2024
Dr. Alonzo's Medicare patients by sex, 2024
- Women1,54353%
- Men1,34947%
Chronic conditions among Dr. Alonzo's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis42%
- Ischemic heart disease38%
- Atrial fibrillation35%
- Diabetes35%
- Heart failure33%
- Chronic kidney disease31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Alonzo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joanne Lynn Alonzo wrote 4,289 Medicare Part D claims in 2024
In 2024, Dr. Alonzo wrote 4,289 Medicare Part D claims for 703 patients. 82% of them were for generic drugs. CMS names the drug for 4,016 of them, across 50 drugs with 11 or more claims each, at $888,114 in total drug cost. In 2023, CMS named 3,493 claims across 50 drugs.
Dr. Alonzo's Part D claims by kind of drug, 2024
- Generic3,537 claims82%
- Brand-name752 claims18%
Dr. Alonzo's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,4932024: 4,01615%
Drugs named by CMS: 50 in 2024, 50 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Joanne Lynn Alonzo scored 81 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 81 out of 100 for Dr. Alonzo for performance year 2024, reported as part of a group. Dr. Alonzo accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Alonzo's MIPS scores, performance year 2024
- 81of 100Final score
- 60.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 69of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Joanne Lynn Alonzo received $18,372 in industry payments from 2016 to 2025
CMS Open Payments shows 393 general payments to Dr. Alonzo from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 70% of the total. Medtronic, Inc. paid the most, $4,284.
General payments to Dr. Alonzo by program year, 2016 to 2025
General payments to Dr. Alonzo by kind, 2016 to 2025
- Food and beverage$12,86170%
- Travel and lodging$5,17028%
- Education$3412%
Companies that paid Dr. Alonzo the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joanne Lynn Alonzo graduated from Kansas City University of Medicine and Biosciences College of Osteopathic Medicine
Dr. Alonzo graduated from Kansas City University of Medicine and Biosciences College of Osteopathic Medicine in 2010. Dr. Alonzo is a member of ACC, AOA, ASE, ASNC and Osteopathic Physicians & Surgeons of California.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joanne Lynn Alonzo's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Joanne Lynn Alonzo
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Joanne Lynn Alonzo's NPI number?
Dr. Joanne Lynn Alonzo's NPI number is 1124349246. It was assigned on June 14, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Joanne Lynn Alonzo?
Dr. Joanne Lynn Alonzo is an internist in Chico, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Joanne Lynn Alonzo practice?
Dr. Alonzo practices at 1531 Esplanade, Chico, CA 95926. Dr. Alonzo's primary practice is Enloe Health in Chico, California, part of Enloe Health. Dmand AI also links Dr. Alonzo to 3 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Joanne Lynn Alonzo's office phone number?
The practice phone on file for Dr. Alonzo is (530) 332-7300.
What is Dr. Joanne Lynn Alonzo's medical license number?
Dr. Alonzo holds Michigan license 5101018832.
Which hospitals is Dr. Joanne Lynn Alonzo affiliated with?
Dr. Alonzo practices at Enloe Health in Chico, California. Dr. Alonzo is also affiliated with Oroville Hospital. Dmand AI links Dr. Alonzo to 3 more hospitals.
What medical group is Dr. Joanne Lynn Alonzo part of?
Dr. Alonzo is linked to Chico Hospitalist Group. Dmand AI links Dr. Alonzo to 1 more medical group.
Does Dr. Joanne Lynn Alonzo accept Medicare?
Yes. CMS data shows Dr. Alonzo billed Medicare for 6,500 services in 2024, and Dr. Alonzo accepts Medicare assignment.
What is Dr. Joanne Lynn Alonzo's MIPS score?
Dr. Alonzo's MIPS final score for performance year 2024 is 81 out of 100, reported as part of a group.
How many Medicare patients does Dr. Joanne Lynn Alonzo see?
CMS counts 2,892 Medicare patients who saw Dr. Alonzo in 2024, with an average age of 75.
Show 5 more questionsShow fewer questions
What services does Dr. Joanne Lynn Alonzo bill to Medicare?
In 2024, Dr. Alonzo's most billed Medicare services were heart test or procedure (93010), office visit, established patient (99215) and heart test or procedure (93306).
Where did Dr. Joanne Lynn Alonzo go to medical school?
Dr. Alonzo graduated from Kansas City University of Medicine and Biosciences College of Osteopathic Medicine in 2010.
What drugs does Dr. Joanne Lynn Alonzo prescribe most?
In 2024 Medicare Part D data, Dr. Alonzo's most prescribed drugs by claims were Atorvastatin Calcium, Eliquis and Metoprolol Succinate.
Has Dr. Joanne Lynn Alonzo received payments from drug or device companies?
CMS Open Payments shows $18,372 in general payments to Dr. Alonzo from 24 companies from 2016 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. Joanne Lynn Alonzo been practicing?
Dr. Alonzo graduated from medical school in 2010, 16 years ago.
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