Dr. Michael Owen Gadsby, MD
- Medicare services, 2023
- 21
- Part D claims, 2024
- 105
- Industry payments
- $25
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 7373 W Lane, Stockton, CA 95210-3377
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group - Stockton (W Lane)
Multi-specialty group site · Stockton, California
Find Dr. Gadsby'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. Michael Owen Gadsby is an ophthalmologist in Stockton, California
Dr. Gadsby practices at Permanente Medical Group - Stockton (W Lane) in Stockton, California.
Dr. Gadsby's NPI, 1457549941, was assigned on October 9, 2007. Dr. Gadsby graduated from David Geffen School of Medicine at UCLA in 1992. Dr. Gadsby's California license number on file is G77223.
- NPI
- 1457549941NPI Registry (opens in a new tab)
- NPI enumeration date
- October 9, 2007
- NPI status
- Active
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Owen Gadsby practices at Permanente Medical Group - Stockton (W Lane) in Stockton, California
Dr. Gadsby's primary practice is Permanente Medical Group - Stockton (W Lane), at 7373 W Lane, Stockton, CA 95210-3377. The practice phone is (209) 476-2000.
- Permanente Medical Group - Stockton (W Lane)7373 W Lane, Stockton, CA 95210-3377Phone(209) 476-2000
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Owen Gadsby is affiliated with 2 sites of care and 2 medical groups
Dr. Gadsby's primary practice is Permanente Medical Group - Stockton (W Lane) in Stockton, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Gadsby to 1 more group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Michael Owen Gadsby's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gadsby practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group - Stockton (W Lane) | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Owen Gadsby is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Gadsby's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dmand AI has Dr. Gadsby's licenses on file in 2 states: California and New Hampshire.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- New Hampshire license
Clinical focus
Dmand AI lists conjunctivitis and eye infection or inflammation among the conditions Dr. Gadsby treats.
Ophthalmologists near Dr. Gadsby
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. Michael Owen Gadsby billed Medicare for 21 services in 2023
CMS data shows 21 Medicare services from Dr. Gadsby across 1 procedure code in 2023. Medicare paid $2,546 for them. Every service was in an office.
Dr. Gadsby compared with the California median for ophthalmologists, 2023
- Dr. Gadsby
- California median
- Medicare services
- 21vs 1,07998% below
- Part D claims
- 64vs 61890% below
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Gadsby's most billed Medicare procedure codes, 2023
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. Gadsby?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gadsby and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Owen Gadsby's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. Gadsby's median patient age at 71, with 0% women.
Dr. Gadsby's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Michael Owen Gadsby wrote 105 Medicare Part D claims in 2024
In 2024, Dr. Gadsby wrote 105 Medicare Part D claims for 57 patients. 70% of them were for generic drugs. CMS names the drug for 64 of them, across 4 drugs with 11 or more claims each, at $1,173 in total drug cost. In 2023, CMS named 62 claims across 3 drugs.
Dr. Gadsby's Part D claims by kind of drug, 2024
- Generic73 claims70%
- Brand-name32 claims30%
Dr. Gadsby'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: 622024: 643%
Drugs named by CMS: 4 in 2024, 3 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
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Dr. Michael Owen Gadsby received $25 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Gadsby from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Hologic Inc paid the most, $25.
Companies that paid Dr. Gadsby the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Owen Gadsby graduated from David Geffen School of Medicine at UCLA
Dr. Gadsby graduated from David Geffen School of Medicine at UCLA in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Owen Gadsby'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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| 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) |
| 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. Michael Owen Gadsby
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. Michael Owen Gadsby's NPI number?
Dr. Michael Owen Gadsby's NPI number is 1457549941. It was assigned on October 9, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Owen Gadsby?
Dr. Michael Owen Gadsby is an ophthalmologist in Stockton, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Michael Owen Gadsby practice?
Dr. Gadsby practices at 7373 W Lane, Stockton, CA 95210-3377. Dr. Gadsby's primary practice is Permanente Medical Group - Stockton (W Lane) in Stockton, California. Dmand AI also links Dr. Gadsby to 1 group practice or clinic and 1 medical group.
What is Dr. Michael Owen Gadsby's office phone number?
The practice phone on file for Dr. Gadsby is (209) 476-2000.
What is Dr. Michael Owen Gadsby's medical license number?
Dr. Gadsby's California license number on file is G77223, one of the licenses on file in 2 states.
Which states has Dr. Michael Owen Gadsby been licensed in?
Dmand AI has state licenses on file for Dr. Gadsby in California (1993 to 2025) and New Hampshire (since 2004).
What medical group is Dr. Michael Owen Gadsby part of?
Dr. Gadsby is linked to The Permanente Medical Group, Inc. Dmand AI links Dr. Gadsby to 1 more medical group.
Does Dr. Michael Owen Gadsby accept Medicare?
Yes. CMS data shows Dr. Gadsby billed Medicare for 21 services in 2023.
What services does Dr. Michael Owen Gadsby bill to Medicare?
In 2023, Dr. Gadsby's most billed Medicare services were eye exam or test (92004).
Where did Dr. Michael Owen Gadsby go to medical school?
Dr. Gadsby graduated from David Geffen School of Medicine at UCLA in 1992.
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What drugs does Dr. Michael Owen Gadsby prescribe most?
In 2024 Medicare Part D data, Dr. Gadsby's most prescribed drugs by claims were Neomycin-Polymyxin-Dexameth, Ketorolac Tromethamine and Latanoprost.
Has Dr. Michael Owen Gadsby received payments from drug or device companies?
CMS Open Payments shows $25 in general payments to Dr. Gadsby from 1 company from 2023 to 2023. The largest total came from Hologic Inc.
How long has Dr. Michael Owen Gadsby been practicing?
Dr. Gadsby graduated from medical school in 1992, 34 years ago.
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