Mark B. Byers, OD
- Medicare patients, 2024
- 188
- Part D claims, 2024
- 38
- Industry payments
- $105
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 429 D St, Marysville, CA 95901-5706
- Practice phone
- Call (530) 742-1679
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mark B. Byers
Eye care practice · Marysville, California
Find Mark Byers' 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.
Mark B. Byers is an optometrist in Sacramento, California
Mark Byers practices at Mark B. Byers in Marysville, California.
Mark Byers' NPI, 1164551966, was assigned on March 5, 2007. Mark Byers holds California license 11554T.
- NPI
- 1164551966NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4587656251
- NPI enumeration date
- March 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (530) 742-1679
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 57
- Medical school graduation
- 1995
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark B. Byers practices in Marysville and Sacramento
Mark Byers' primary practice is Mark B. Byers, at 429 D St, Marysville, CA 95901-5706. The practice phone is (530) 742-1679. The NPI Registry lists Mark Byers' practice address as 1625 Stockton Blvd, Sacramento, CA 95816.
- Mark B. ByersPrimary429 D St, Marysville, CA 95901-5706Phone(530) 742-1679
- NPI Registry address1625 Stockton Blvd, Sacramento, CA 95816 · Sacramento County
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Mark B. Byers is affiliated with 1 site of care and 1 medical group
Mark Byers' primary practice is Mark B. Byers in Marysville, California. Dmand AI also links Mark Byers to 1 medical group, 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 Mark B. Byers' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Byers practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mark B. Byers | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Mark B. Byers is one of 7,206 optometrists in California
Optometrist is Mark Byers' primary specialty in the NPI Registry, under taxonomy code 152W00000X. Mark Byers is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Mark Byers
Counts of optometrists 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
Mark B. Byers treated 188 Medicare patients in 2024, average age 72
CMS counts 188 Medicare patients who saw Mark Byers in 2024. The largest group is 65 to 74, with 102 patients. 70% of them have high cholesterol, and 62% have high blood pressure. 22% are also on Medicaid. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Byers' median patient age at 69, with 52% women.
Mark Byers' Medicare patients by age, 2024
Mark Byers' Medicare patients by sex, 2024
- Women11260%
- Men7640%
Chronic conditions among Mark Byers' Medicare patients, 2024
- High cholesterol70%
- High blood pressure62%
- Arthritis39%
- Diabetes34%
- Anxiety21%
- Ischemic heart disease20%
- Mood disorders20%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
Mark Byers' 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%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark B. Byers wrote 38 Medicare Part D claims in 2024
In 2024, Mark Byers wrote 38 Medicare Part D claims for 17 patients. 45% of them were for generic drugs.
Mark Byers' Part D claims by kind of drug, 2024
- Generic17 claims45%
- Brand-name21 claims55%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Mark B. Byers takes part in Medicare
Mark Byers accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Mark B. Byers received $105 in industry payments in 2025
CMS Open Payments shows 1 general payment to Mark Byers from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $105.
Companies that paid Mark Byers the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Mark B. Byers'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 (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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 Mark B. Byers
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark B. Byers' NPI number?
Mark B. Byers' NPI number is 1164551966. It was assigned on March 5, 2007, and it is active in the NPI Registry.
What does Mark B. Byers specialize in?
Mark B. Byers is an optometrist in Sacramento, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Mark B. Byers practice?
Mark Byers practices at 429 D St, Marysville, CA 95901-5706. Mark Byers also practices at 1625 Stockton Blvd, Sacramento, CA 95816. Mark Byers' primary practice is Mark B. Byers in Marysville, California. Dmand AI also links Mark Byers to 1 medical group.
What is Mark B. Byers' office phone number?
The practice phone on file for Mark Byers is (530) 742-1679.
What is Mark B. Byers' medical license number?
Mark Byers holds California license 11554T.
Does Mark B. Byers accept Medicare?
Yes. CMS lists Mark Byers as accepting Medicare assignment.
How many Medicare patients does Mark B. Byers see?
CMS counts 188 Medicare patients who saw Mark Byers in 2024, with an average age of 72.
Has Mark B. Byers received payments from drug or device companies?
CMS Open Payments shows $105 in general payments to Mark Byers from 1 company from 2025 to 2025. The largest total came from Bristol-Myers Squibb Company.
How long has Mark B. Byers been practicing?
Mark Byers graduated from medical school in 1995, 31 years ago.
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