Dr. Gayle L. Shimokaji, MD
- Medicare services, 2024
- 6,400
- Medicare patients, 2024
- 134
- Part D claims, 2024
- 356
- Hospital affiliations
- 1
- Industry payments
- $5,962
- Practice address
- 1165 Montgomery Dr, Santa Rosa, CA 95405
- Practice phone
- Call (707) 525-5300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Gayle L. Shimokaji is an ophthalmologist in Santa Rosa, California
Dr. Shimokaji practices at Providence Santa Rosa Memorial Hospital in Santa Rosa, California, part of Providence Health & Services.
Dr. Shimokaji's NPI, 1912099672, was assigned on September 29, 2006. Dr. Shimokaji graduated from UCSF School of Medicine in 1987. Dr. Shimokaji holds California license G063936.
- NPI
- 1912099672NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2264690304
- NPI enumeration date
- September 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 525-5300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gayle L. Shimokaji practices at Providence Santa Rosa Memorial Hospital in Santa Rosa, California
Dr. Shimokaji's primary practice is Providence Santa Rosa Memorial Hospital, at 1165 Montgomery Dr, Santa Rosa, CA 95405 in Sonoma County. The practice phone is (707) 525-5300.
- Providence Santa Rosa Memorial Hospital1165 Montgomery Dr, Santa Rosa, CA 95405 · Sonoma CountyPhone(707) 525-5300
Source: Dmand AI Affiliation Data
Dr. Gayle L. Shimokaji is affiliated with 1 site of care
Dr. Shimokaji's primary practice is Providence Santa Rosa Memorial Hospital in Santa Rosa, California, part of Providence Health & Services.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gayle L. Shimokaji's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shimokaji practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence Santa Rosa Memorial Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gayle L. Shimokaji is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Shimokaji's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Shimokaji is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Shimokaji is licensed in California.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
Clinical focus
Dmand AI lists cataract, conjunctivitis, eye infection or inflammation, eyelid inflammation, glaucoma, glaucoma surgery, inflammation of iris and secondary membranaous cataract surgery among the conditions Dr. Shimokaji treats.
Ophthalmologists near Dr. Shimokaji
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. Gayle L. Shimokaji billed Medicare for 6,400 services in 2024
CMS data shows 6,400 Medicare services from Dr. Shimokaji across 17 procedure codes in 2024, for 134 Medicare patients. Medicare paid $473,094 for them. Every service was in an office.
Dr. Shimokaji's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5342024: 6,0251028%
- Tests and treatments
- 2023: 3292024: 20139%
- Imaging
- 2023: 862024: 825%
- Surgery
- 2023: 812024: 5532%
- Other services
- 2023: 02024: 37
Dr. Shimokaji compared with the California median for ophthalmologists, 2024
- Dr. Shimokaji
- California median
- Medicare services
- 6,400vs 1,0795.9 times
- Medicare patients
- 134vs 42168% below
- Part D claims
- 271vs 61856% below
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Shimokaji'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. Shimokaji and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gayle L. Shimokaji treated 134 Medicare patients in 2024, average age 78
CMS counts 134 Medicare patients who saw Dr. Shimokaji in 2024. The largest group is 75 to 84, with 69 patients. 75% of them have high cholesterol, and 63% have high blood pressure. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Shimokaji's median patient age at 69, with 52% women.
Dr. Shimokaji's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Shimokaji's Medicare patients by sex, 2024
- Women7858%
- Men5642%
Chronic conditions among Dr. Shimokaji's Medicare patients, 2024
- High cholesterol75%
- High blood pressure63%
- Arthritis40%
- Ischemic heart disease20%
- Chronic kidney disease19%
- Atrial fibrillation18%
- Cancer18%
- Anxiety16%
Share of Medicare patients with each condition. A patient can have several.
Dr. Shimokaji's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women52%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gayle L. Shimokaji wrote 356 Medicare Part D claims in 2024
In 2024, Dr. Shimokaji wrote 356 Medicare Part D claims for 64 patients. 51% of them were for generic drugs. CMS names the drug for 271 of them, across 8 drugs with 11 or more claims each, at $48,540 in total drug cost. In 2023, CMS named 362 claims across 9 drugs.
Dr. Shimokaji's Part D claims by kind of drug, 2024
- Generic181 claims51%
- Brand-name175 claims49%
Dr. Shimokaji'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: 3622024: 27125%
Drugs named by CMS: 8 in 2024, 9 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
How Dr. Gayle L. Shimokaji takes part in Medicare
Dr. Shimokaji accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Gayle L. Shimokaji received $5,962 in industry payments from 2016 to 2025
CMS Open Payments shows 63 general payments to Dr. Shimokaji from 22 drug and device companies from 2016 to 2025. Debt forgiveness make up the largest share, 42% of the total. ConvaTec Inc. paid the most, $2,515.
General payments to Dr. Shimokaji by program year, 2016 to 2025
General payments to Dr. Shimokaji by kind, 2016 to 2025
- Debt forgiveness$2,51542%
- Food and beverage$2,19237%
- Travel and lodging$1,20020%
- Gifts$561%
Companies that paid Dr. Shimokaji 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. Gayle L. Shimokaji has 4 awards and honors on record
Dmand AI lists 4 awards for Dr. Shimokaji, most recently America’s Best Physicians in 2024.
Awards and honors for Dr. Shimokaji
- 2024
- America’s Best Physicians
- CMS Stage 1 EHR
- Lifetime Honorary
- TOP DOCTOR 2013,2014,2015,2016,2017,2018,2019,2020,2021,2022,2023,2024
Source: Dmand AI Professional Profile Data
Dr. Gayle L. Shimokaji graduated from UCSF School of Medicine
Dr. Shimokaji graduated from UCSF School of Medicine in 1987.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Gayle L. Shimokaji accepts plans from 7 insurance carriers
Dr. Shimokaji is in network with 7 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Shimokaji accepts, by number of carriers
- Medicare7
- PPO6
- HMO3
- POS3
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Gayle L. Shimokaji'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Gayle L. Shimokaji
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. Gayle L. Shimokaji's NPI number?
Dr. Gayle L. Shimokaji's NPI number is 1912099672. It was assigned on September 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gayle L. Shimokaji?
Dr. Gayle L. Shimokaji is an ophthalmologist in Santa Rosa, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Gayle L. Shimokaji practice?
Dr. Shimokaji practices at 1165 Montgomery Dr, Santa Rosa, CA 95405. Dr. Shimokaji's primary practice is Providence Santa Rosa Memorial Hospital in Santa Rosa, California, part of Providence Health & Services.
What is Dr. Gayle L. Shimokaji's office phone number?
The practice phone on file for Dr. Shimokaji is (707) 525-5300.
What is Dr. Gayle L. Shimokaji's medical license number?
Dr. Shimokaji holds California license G063936.
Which hospitals is Dr. Gayle L. Shimokaji affiliated with?
Dr. Shimokaji practices at Providence Santa Rosa Memorial Hospital in Santa Rosa, California.
Does Dr. Gayle L. Shimokaji accept Medicare?
Yes. CMS data shows Dr. Shimokaji billed Medicare for 6,400 services in 2024, and Dr. Shimokaji accepts Medicare assignment.
How many Medicare patients does Dr. Gayle L. Shimokaji see?
CMS counts 134 Medicare patients who saw Dr. Shimokaji in 2024, with an average age of 78.
Is Dr. Gayle L. Shimokaji board certified?
Yes. Dr. Shimokaji is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Gayle L. Shimokaji bill to Medicare?
In 2024, Dr. Shimokaji's most billed Medicare services were care management and other visits (99489), care management and other visits (99458) and care management and other visits (99484).
Show 5 more questionsShow fewer questions
Where did Dr. Gayle L. Shimokaji go to medical school?
Dr. Shimokaji graduated from UCSF School of Medicine in 1987.
What drugs does Dr. Gayle L. Shimokaji prescribe most?
In 2024 Medicare Part D data, Dr. Shimokaji's most prescribed drugs by claims were Latanoprost, Lumigan and Dorzolamide-Timolol.
Has Dr. Gayle L. Shimokaji received payments from drug or device companies?
CMS Open Payments shows $5,962 in general payments to Dr. Shimokaji from 22 companies from 2016 to 2025. The largest total came from ConvaTec Inc.
How long has Dr. Gayle L. Shimokaji been practicing?
Dr. Shimokaji graduated from medical school in 1987, 39 years ago.
What insurance does Dr. Gayle L. Shimokaji accept?
Dr. Shimokaji is in network with 7 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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