Dr. Joel Isaac Barthelow, MD
- Medicare services, 2024
- 8,434
- Medicare patients, 2024
- 1,681
- Part D claims, 2024
- 1,185
- MIPS score, 2024
- 91
- Industry payments
- $41,829
- Practice address
- 1700 Bruce Rd, Chico, CA 95928
- Practice phone
- Call (530) 891-1900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Ridge Eye Care Inc
Chico, California
Find Dr. Barthelow's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Joel Isaac Barthelow is an ophthalmologist in Chico, California
Dr. Barthelow practices at Ridge Eye Care Inc in Chico, California.
Dr. Barthelow's NPI, 1013974625, was assigned on April 27, 2006. Dr. Barthelow graduated from UC Davis School of Medicine in 2002. Dr. Barthelow's California license number on file is A94358.
- NPI
- 1013974625NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7618974064
- NPI enumeration date
- April 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (530) 891-1900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joel Isaac Barthelow practices at Ridge Eye Care Inc in Chico, California
Dr. Barthelow's primary practice is Ridge Eye Care Inc, at 1700 Bruce Rd, Chico, CA 95928 in Butte County. The practice phone is (530) 891-1900.
- Ridge Eye Care Inc1700 Bruce Rd, Chico, CA 95928 · Butte CountyPhone(530) 891-1900
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Joel Isaac Barthelow is affiliated with 3 sites of care and 4 medical groups
Dr. Barthelow's primary practice is Ridge Eye Care Inc in Chico, California. The medical group on file is Chico Hospitalist Group. Dmand AI also links Dr. Barthelow to 3 more medical groups and 2 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Joel Isaac Barthelow's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barthelow practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ridge Eye Care Inc | Available with a free account |
| +2 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Joel Isaac Barthelow is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Barthelow's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Barthelow is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Barthelow's licenses on file in 2 states: California and Utah.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Utah license
Clinical focus
Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, conjunctivitis, eye infection or inflammation, eyelid inflammation, glaucoma and glaucoma surgery among the conditions Dr. Barthelow treats.
Ophthalmologists near Dr. Barthelow
Counts of ophthalmologists 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. Joel Isaac Barthelow billed Medicare for 8,434 services in 2024
CMS data shows 8,434 Medicare services from Dr. Barthelow across 20 procedure codes in 2024, for 1,681 Medicare patients. Medicare paid $938,166 for them.
Dr. Barthelow's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 4,5462024: 6,77849%
- Surgery
- 2023: 7842024: 1,46086%
- Drugs given in the office
- 2023: 922024: 196113%
- Lab and pathology
- 2023: 1702024: 0100%
- Office and hospital visits
- 2023: 202024: 0100%
Where Dr. Barthelow's Medicare services took place, 2024
- In an office7,66791%
- In a facility7679%
Dr. Barthelow compared with the California median for ophthalmologists, 2024
- Dr. Barthelow
- California median
- Medicare services
- 8,434vs 1,0797.8 times
- Medicare patients
- 1,681vs 4214.0 times
- Part D claims
- 1,081vs 61875% above
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Barthelow'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Barthelow and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joel Isaac Barthelow treated 1,681 Medicare patients in 2024, average age 75
CMS counts 1,681 Medicare patients who saw Dr. Barthelow in 2024. The largest group is 65 to 74, with 733 patients. 74% of them have high cholesterol, and 70% have high blood pressure. 30% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Barthelow's median patient age at 73, with 61% women.
Dr. Barthelow's Medicare patients by age, 2024
Dr. Barthelow's Medicare patients by sex, 2024
- Women1,01961%
- Men66239%
Chronic conditions among Dr. Barthelow's Medicare patients, 2024
- High cholesterol74%
- High blood pressure70%
- Arthritis38%
- Diabetes31%
- Mood disorders22%
- Anxiety21%
- Chronic kidney disease20%
- Ischemic heart disease20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Barthelow's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women61%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joel Isaac Barthelow wrote 1,185 Medicare Part D claims in 2024
In 2024, Dr. Barthelow wrote 1,185 Medicare Part D claims for 458 patients. 67% of them were for generic drugs. CMS names the drug for 1,081 of them, across 19 drugs with 11 or more claims each, at $83,153 in total drug cost. In 2023, CMS named 620 claims across 11 drugs.
Dr. Barthelow's Part D claims by kind of drug, 2024
- Generic794 claims67%
- Brand-name391 claims33%
Dr. Barthelow'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.
Drug classes CMS tracks in Dr. Barthelow's Part D claims, 2024
- Antibiotics1%14 of 1,185 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6202024: 1,08174%
Drugs named by CMS: 19 in 2024, 11 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. Joel Isaac Barthelow scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for Dr. Barthelow for performance year 2024, reported as part of a group. Dr. Barthelow accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 537 procedures of cataract surgery by Dr. Barthelow, more than 96% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Barthelow's MIPS scores, performance year 2024
- 91of 100Final score
- 79.7of 100Quality
- 95of 100Promoting Interoperability
- 40of 100Improvement Activities
- 79of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Barthelow ranks in Medicare procedure volume
- Cataract surgery
- 96th percentile537 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Joel Isaac Barthelow received $41,829 in industry payments from 2016 to 2025
CMS Open Payments shows 309 general payments to Dr. Barthelow from 32 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 44% of the total. TissueTech, Inc. paid the most, $22,541.
General payments to Dr. Barthelow by program year, 2016 to 2025
General payments to Dr. Barthelow by kind, 2016 to 2025
- Consulting fees$18,40044%
- Food and beverage$14,32534%
- Travel and lodging$4,79311%
- Speaker and faculty fees$4,23310%
- Other$780%
Companies that paid Dr. Barthelow 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. Joel Isaac Barthelow graduated from UC Davis School of Medicine
Dr. Barthelow graduated from UC Davis School of Medicine in 2002.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Joel Isaac Barthelow accepts plans from 18 insurance carriers
Dr. Barthelow is in network with 18 carriers, including Aetna, Elevance and HCSC. HMO plans come from the most carriers, 11. Check the plan with the practice before a visit.
- Aetna
- Elevance
- HCSC
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- Humana
- Alliant Health Plans
- Blue Cross Blue Shield of Michigan
- +10 more carriersWith a free account
Plan types Dr. Barthelow accepts, by number of carriers
- HMO11
- PPO11
- Medicare8
- POS5
- EPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Joel Isaac Barthelow'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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)Doctors and Clinicians Utilization Data (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 |
| Insurance carriers and plan types | Dmand AI Insurance Network 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. Joel Isaac Barthelow
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. Joel Isaac Barthelow's NPI number?
Dr. Joel Isaac Barthelow's NPI number is 1013974625. It was assigned on April 27, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Joel Isaac Barthelow?
Dr. Joel Isaac Barthelow is an ophthalmologist in Chico, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Joel Isaac Barthelow practice?
Dr. Barthelow practices at 1700 Bruce Rd, Chico, CA 95928. Dr. Barthelow's primary practice is Ridge Eye Care Inc in Chico, California. Dmand AI also links Dr. Barthelow to 3 medical groups and 2 group practices and clinics.
What is Dr. Joel Isaac Barthelow's office phone number?
The practice phone on file for Dr. Barthelow is (530) 891-1900.
What is Dr. Joel Isaac Barthelow's medical license number?
Dr. Barthelow's California license number on file is A94358, one of the licenses on file in 2 states.
Which states has Dr. Joel Isaac Barthelow been licensed in?
Dmand AI has state licenses on file for Dr. Barthelow in California (2006 to 2025) and Utah (2003 to 2008).
What medical group is Dr. Joel Isaac Barthelow part of?
Dr. Barthelow is linked to Chico Hospitalist Group. Dmand AI links Dr. Barthelow to 3 more medical groups.
Does Dr. Joel Isaac Barthelow accept Medicare?
Yes. CMS data shows Dr. Barthelow billed Medicare for 8,434 services in 2024, and Dr. Barthelow accepts Medicare assignment.
What is Dr. Joel Isaac Barthelow's MIPS score?
Dr. Barthelow's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does Dr. Joel Isaac Barthelow see?
CMS counts 1,681 Medicare patients who saw Dr. Barthelow in 2024, with an average age of 75.
Show 7 more questionsShow fewer questions
Is Dr. Joel Isaac Barthelow board certified?
Yes. Dr. Barthelow is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Joel Isaac Barthelow bill to Medicare?
In 2024, Dr. Barthelow's most billed Medicare services were eye exam or test (92014), eye exam or test (92134) and eye exam or test (92012).
Where did Dr. Joel Isaac Barthelow go to medical school?
Dr. Barthelow graduated from UC Davis School of Medicine in 2002.
What drugs does Dr. Joel Isaac Barthelow prescribe most?
In 2024 Medicare Part D data, Dr. Barthelow's most prescribed drugs by claims were Latanoprost, Ketorolac Tromethamine and Azelastine HCl.
Has Dr. Joel Isaac Barthelow received payments from drug or device companies?
CMS Open Payments shows $41,829 in general payments to Dr. Barthelow from 32 companies from 2016 to 2025. The largest total came from TissueTech, Inc.
How long has Dr. Joel Isaac Barthelow been practicing?
Dr. Barthelow graduated from medical school in 2002, 24 years ago.
What insurance does Dr. Joel Isaac Barthelow accept?
Dr. Barthelow is in network with 18 carriers, including Aetna, Elevance and HCSC. HMO plans come from the most carriers, 11. Check the plan with the practice before a visit.
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