Dr. Gary P. Barth, MD
- Medicare services, 2024
- 2,663
- Medicare patients, 2024
- 677
- Part D claims, 2024
- 391
- MIPS score, 2024
- 75
- Industry payments
- $267
- Practice address
- 640 Healdsburg Ave, Healdsburg, CA 95448-3609
- Practice phone
- Call (707) 955-1120
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Barth Vision & Optical
Physician office · Healdsburg, California
Find Dr. Barth's professional email, personal email and mobile number
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Dr. Gary P. Barth is an ophthalmologist in Healdsburg, California
Dr. Barth practices at Barth Vision & Optical in Healdsburg, California.
Dr. Barth's NPI, 1992783237, was assigned on January 6, 2006. Dr. Barth graduated from Keck School of Medicine of USC in 1976. Dr. Barth holds California license G34382.
- NPI
- 1992783237NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9436199460
- NPI enumeration date
- January 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 955-1120
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 75
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Gary P. Barth practices at Barth Vision & Optical in Healdsburg, California
Dr. Barth's primary practice is Barth Vision & Optical, at 640 Healdsburg Ave, Healdsburg, CA 95448-3609. The practice phone is (707) 955-1120.
- Barth Vision & Optical640 Healdsburg Ave, Healdsburg, CA 95448-3609Phone(707) 955-1120
Source: Dmand AI Affiliation Data
Dr. Gary P. Barth is affiliated with 1 site of care
Dr. Barth's primary practice is Barth Vision & Optical in Healdsburg, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Gary P. Barth's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barth practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Barth Vision & Optical | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gary P. Barth is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Barth's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Barth is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Barth's licenses on file in 2 states: California and Oregon.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Oregon license
Clinical focus
Dmand AI lists age-related macular degeneration, cataract, cataract surgery with lens implant, conjunctivitis, dry eye, eyelid inflammation, glaucoma and glaucoma surgery among the conditions Dr. Barth treats.
Ophthalmologists near Dr. Barth
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. Gary P. Barth billed Medicare for 2,663 services in 2024
CMS data shows 2,663 Medicare services from Dr. Barth across 19 procedure codes in 2024, for 677 Medicare patients. Medicare paid $321,790 for them.
Dr. Barth's Medicare services by type, 2024
- Tests and treatments1,336
- Surgery690
- Drugs given in the office219
- Other services216
- Office and hospital visits202
Where Dr. Barth's Medicare services took place, 2024
- In an office2,64799%
- In a facility161%
Dr. Barth compared with the California median for ophthalmologists, 2024
- Dr. Barth
- California median
- Medicare services
- 2,663vs 1,0792.5 times
- Medicare patients
- 677vs 42161% above
- Part D claims
- 249vs 61860% below
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Barth'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. Barth?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Barth and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gary P. Barth treated 677 Medicare patients in 2024, average age 77
CMS counts 677 Medicare patients who saw Dr. Barth in 2024. The largest group is 75 to 84, with 338 patients. 71% of them have high cholesterol, and 62% have high blood pressure. 3% are also on Medicaid. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Barth's median patient age at 78, with 64% women.
Dr. Barth's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Barth's Medicare patients by sex, 2024
- Women42362%
- Men25438%
Chronic conditions among Dr. Barth's Medicare patients, 2024
- High cholesterol71%
- High blood pressure62%
- Arthritis41%
- Ischemic heart disease20%
- Osteoporosis19%
- Anxiety18%
- Cancer17%
- Diabetes17%
Share of Medicare patients with each condition. A patient can have several.
Dr. Barth's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women64%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Gary P. Barth wrote 391 Medicare Part D claims in 2024
In 2024, Dr. Barth wrote 391 Medicare Part D claims for 153 patients. 55% of them were for generic drugs. CMS names the drug for 249 of them, across 8 drugs with 11 or more claims each, at $9,761 in total drug cost.
Dr. Barth's Part D claims by kind of drug, 2024
- Generic216 claims55%
- Brand-name175 claims45%
Dr. Barth'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. Barth's Part D claims, 2024
- Antibiotics5%21 of 391 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. Gary P. Barth scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Barth for performance year 2024, reported individually. Dr. Barth accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 264 procedures of cataract surgery by Dr. Barth, more than 88% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- MIPS final score, 2024
- 75 of 100
Where Dr. Barth ranks in Medicare procedure volume
- Cataract surgery
- 88th percentile264 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. Gary P. Barth received $267 in industry payments from 2024 to 2025
CMS Open Payments shows 7 general payments to Dr. Barth from 5 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 90% of the total. Apellis Pharmaceuticals, Inc. paid the most, $123.
General payments to Dr. Barth by program year, 2024 to 2025
General payments to Dr. Barth by kind, 2024 to 2025
- Food and beverage$24190%
- Honoraria$2610%
Companies that paid Dr. Barth the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Gary P. Barth has 1 award and honors on record
Dmand AI lists 1 award for Dr. Barth.
Awards and honors for Dr. Barth
- Undated
- AAO Fellow
Source: Dmand AI Professional Profile Data
Dr. Gary P. Barth graduated from Keck School of Medicine of USC
Dr. Barth graduated from Keck School of Medicine of USC in 1976. Dr. Barth is a member of AAO.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Gary P. Barth accepts plans from 14 insurance carriers
Dr. Barth is in network with 14 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Elevance
- Aetna
- United Healthcare
- Blue Cross Blue Shield of Michigan
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +6 more carriersWith a free account
Plan types Dr. Barth accepts, by number of carriers
- PPO9
- Medicare7
- HMO6
- POS5
- EPO4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Gary P. Barth'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 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) |
| 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. Gary P. Barth
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. Gary P. Barth's NPI number?
Dr. Gary P. Barth's NPI number is 1992783237. It was assigned on January 6, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary P. Barth?
Dr. Gary P. Barth is an ophthalmologist in Healdsburg, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Gary P. Barth practice?
Dr. Barth practices at 640 Healdsburg Ave, Healdsburg, CA 95448-3609. Dr. Barth's primary practice is Barth Vision & Optical in Healdsburg, California.
What is Dr. Gary P. Barth's office phone number?
The practice phone on file for Dr. Barth is (707) 955-1120.
What is Dr. Gary P. Barth's medical license number?
Dr. Barth holds California license G34382, one of the licenses on file in 2 states.
Which states has Dr. Gary P. Barth been licensed in?
Dmand AI has state licenses on file for Dr. Barth in California (1977 to 2027) and Oregon (since 1978).
Does Dr. Gary P. Barth accept Medicare?
Yes. CMS data shows Dr. Barth billed Medicare for 2,663 services in 2024, and Dr. Barth accepts Medicare assignment.
What is Dr. Gary P. Barth's MIPS score?
Dr. Barth's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. Gary P. Barth see?
CMS counts 677 Medicare patients who saw Dr. Barth in 2024, with an average age of 77.
Is Dr. Gary P. Barth board certified?
Yes. Dr. Barth is board certified in ophthalmology by the American Board of Ophthalmology.
Show 6 more questionsShow fewer questions
What services does Dr. Gary P. Barth bill to Medicare?
In 2024, Dr. Barth's most billed Medicare services were eye exam or test (92014), eye exam or test (92136) and injected or infused drug (J2280).
Where did Dr. Gary P. Barth go to medical school?
Dr. Barth graduated from Keck School of Medicine of USC in 1976.
What drugs does Dr. Gary P. Barth prescribe most?
In 2024 Medicare Part D data, Dr. Barth's most prescribed drugs by claims were Latanoprost, Prednisolone Acetate and Diclofenac Sodium.
Has Dr. Gary P. Barth received payments from drug or device companies?
CMS Open Payments shows $267 in general payments to Dr. Barth from 5 companies from 2024 to 2025. The largest total came from Apellis Pharmaceuticals, Inc.
How long has Dr. Gary P. Barth been practicing?
Dr. Barth graduated from medical school in 1976, 50 years ago.
What insurance does Dr. Gary P. Barth accept?
Dr. Barth is in network with 14 carriers, including Elevance, Aetna and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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