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Dr. Robert Barry Guss, MD
NPI1457445553
- Medicare services, 2020
- 342
- Part D claims, 2021
- 31
- Publications
- 10
- Industry payments
- $1,882
- Insurance carriers
- 4
- Practice address
- 2050 Fairmont Dr, San Leandro, CA 94578
- Practice phone
- Call (760) 320-7051
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Guss' professional email, personal email and mobile number
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Dr. Robert Barry Guss is an ophthalmologist in San Leandro, California
Dr. Guss practices in San Leandro, California.
Dr. Guss' NPI, 1457445553, was assigned on October 3, 2006. Dr. Guss graduated from University Of Michigan Medical School in 1976. Dr. Guss holds California license G35444.
NPI and contact details
- NPI
- 1457445553NPI Registry (opens in a new tab)
- NPI enumeration date
- October 3, 2006
- NPI status
- Active
- Practice phone
- (760) 320-7051
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Robert Barry Guss' practice address is in San Leandro, California
Dr. Guss' practice address in the NPI Registry is 2050 Fairmont Dr, San Leandro, CA 94578, in Alameda County. The practice phone is (760) 320-7051.
- NPI Registry address2050 Fairmont Dr, San Leandro, CA 94578 · Alameda CountyPhone(760) 320-7051
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Robert Barry Guss' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guss practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Guss' practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Barry Guss is one of 2,621 ophthalmologists in California
Ophthalmology is Dr. Guss' primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Guss is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Dr. Guss' licenses on file in 3 states: California, Hawaii and Louisiana.
Specialties and state licenses
- Ophthalmology, CaliforniaPrimary
- Hawaii license
- Louisiana license
Ophthalmologists near Dr. Guss
Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.
2,621ophthalmologists in California
6ophthalmologists in San Leandro
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Robert Barry Guss billed Medicare for 342 services in 2020
CMS data shows 342 Medicare services from Dr. Guss across 9 procedure codes in 2020. Medicare paid $16,939 for them.
Medicare services, 2020342
Paid by Medicare$16,939
Procedure codes9
Dr. Guss' Medicare services by type, 2019 to 2020
- 2019
- 2020
- Tests and treatments
- 2019: 1,6902020: 29882%
- Imaging
- 2019: 1022020: 3071%
- Surgery
- 2019: 1422020: 1490%
- Office and hospital visits
- 2019: 262020: 0100%
Where Dr. Guss' Medicare services took place, 2020
- In an office32896%
- In a facility144%
Dr. Guss compared with the California median for ophthalmologists, 2020
- Dr. Guss
- California median
- Medicare services
- 342vs 1,07968% below
- Part D claims
- 31vs 61895% below
Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.
Dr. Guss' most billed Medicare procedure codes, 2020
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. Guss?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Guss and other ophthalmologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Barry Guss' patients have a median age of 77
Across all payers, Dmand AI patient panel data puts Dr. Guss' median patient age at 77, with 54% women.
Dr. Guss' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women54%
- Men46%
Source: Dmand AI Patient Panel Data
Dr. Robert Barry Guss wrote 31 Medicare Part D claims in 2021
In 2021, Dr. Guss wrote 31 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $1,205 in total drug cost. In 2020, CMS named 688 claims across 15 drugs.
Part D claims, 202131
Drugs named by CMS1
Total drug cost$1,205
Dr. Guss' most prescribed drugs by claims, 2021
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, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 6882021: 3195%
Drugs named by CMS: 1 in 2021, 15 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Robert Barry Guss has 10 publications on record
Dmand AI links 10 papers to Dr. Guss in 2008. The most frequent topics are Lipopolysaccharides, Capillary Permeability and Corneal Transplantation. Dr. Guss has published most often in Ann Ophthalmol. Dr. Guss' most frequent co-authors are Peter R. Egbert and James Parker McCulley, MD.
Papers10
Topics Dr. Guss writes about most
- Lipopolysaccharides
- Capillary Permeability
- Corneal Transplantation
- Disease Models, Animal
- Endotoxins
- Rabbits
- Uveitis
Dr. Guss' most frequent co-authors
Recent publications by Dr. Guss
Surg Gynecol Obstet
Adrenal CortexAdrenalectomyAdrenal Glands
Capillary PermeabilityCyproheptadineDisease Models, Animal
Capillary PermeabilityEyeFluorescein-5-isothiocyanate
Ann Ophthalmol
Antibody FormationImmunity, CellularImmunoglobulins
See who Dr. Guss researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Guss works with, so you can find a warm path to the right ophthalmologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Robert Barry Guss received $1,882 in industry payments from 2016 to 2022
CMS Open Payments shows 63 general payments to Dr. Guss from 12 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $796.
General payments to Dr. Guss by program year, 2016 to 2022
Companies that paid Dr. Guss the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert Barry Guss has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Guss, most recently Palm Springs Life Magazine in 2014.
Awards and honors for Dr. Guss
- 2014
- Palm Springs Life Magazine
- Undated
- AAO Fellow
Source: Dmand AI Professional Profile Data
Dr. Robert Barry Guss graduated from University Of Michigan Medical School
Dr. Guss graduated from University Of Michigan Medical School in 1976. Dr. Guss is a member of AAO.
- Medical school
- Board certified in ophthalmology
Source: Dmand AI Professional Profile Data
Dr. Robert Barry Guss accepts plans from 4 insurance carriers
Dr. Guss is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
- Regence Health Plans
Plan types Dr. Guss accepts, by number of carriers
- Medicare4
- PPO4
Source: Dmand AI Insurance Network Data
Sources for Dr. Robert Barry Guss'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 |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Robert Barry Guss
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. Robert Barry Guss' NPI number?
Dr. Robert Barry Guss' NPI number is 1457445553. It was assigned on October 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Barry Guss?
Dr. Robert Barry Guss is an ophthalmologist in San Leandro, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Robert Barry Guss practice?
Dr. Guss practices at 2050 Fairmont Dr, San Leandro, CA 94578.
What is Dr. Robert Barry Guss' office phone number?
The practice phone on file for Dr. Guss is (760) 320-7051.
What is Dr. Robert Barry Guss' medical license number?
Dr. Guss holds California license G35444, one of the licenses on file in 3 states.
Which states has Dr. Robert Barry Guss been licensed in?
Dmand AI has state licenses on file for Dr. Guss in California (1977 to 2026), Hawaii (1979 to 2026) and Louisiana (1981 to 1995).
Does Dr. Robert Barry Guss accept Medicare?
Yes. CMS data shows Dr. Guss billed Medicare for 342 services in 2020.
Is Dr. Robert Barry Guss board certified?
Yes. Dr. Guss is board certified in ophthalmology by the American Board of Ophthalmology.
What services does Dr. Robert Barry Guss bill to Medicare?
In 2020, Dr. Guss' most billed Medicare services were eye exam or test (92012), eye exam or test (92014) and eye exam or test (92133).
Where did Dr. Robert Barry Guss go to medical school?
Dr. Guss graduated from University Of Michigan Medical School in 1976.
Show 6 more questionsShow fewer questions
What drugs does Dr. Robert Barry Guss prescribe most?
In 2021 Medicare Part D data, Dr. Guss' most prescribed drugs by claims were Latanoprost.
Has Dr. Robert Barry Guss received payments from drug or device companies?
CMS Open Payments shows $1,882 in general payments to Dr. Guss from 12 companies from 2016 to 2022. The largest total came from Alcon Laboratories Inc.
How long has Dr. Robert Barry Guss been practicing?
Dr. Guss graduated from medical school in 1976, 50 years ago.
Does Dr. Robert Barry Guss do research?
Dmand AI links 10 publications to Dr. Guss.
Who does Dr. Robert Barry Guss publish with?
Dr. Guss' most frequent co-authors are Peter R. Egbert (2 shared papers) and James Parker McCulley, MD (1 shared paper).
What insurance does Dr. Robert Barry Guss accept?
Dr. Guss is in network with 4 carriers, including Blue Cross Blue Shield of Massachusetts, Blue Cross Blue Shield of Michigan and HCSC. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
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