Mark A. Grandas, OD
- Medicare patients, 2024
- 67
- Part D claims, 2024
- 268
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 23600 El Toro Rd, Lake Forest, CA 92630
- Practice phone
- Call (800) 571-5202
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
National Vision, Inc.
Lake Forest, California
Find Mark Grandas' 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 A. Grandas is an optometrist in Lake Forest, California
Mark Grandas practices at National Vision, Inc. in Lake Forest, California.
Mark Grandas' NPI, 1881675270, was assigned on November 11, 2005. Mark Grandas graduated from Pennsylvania College of Optometry in 2000. Mark Grandas holds Pennsylvania license OEG000064.
- NPI
- 1881675270NPI Registry (opens in a new tab)
- NPI enumeration date
- November 11, 2005
- NPI status
- Active
- Practice phone
- (800) 571-5202
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 52
- Medical school graduation
- 2000
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Mark A. Grandas practices at National Vision, Inc. in Lake Forest, California
Mark Grandas' primary practice is National Vision, Inc., at 23600 El Toro Rd, Lake Forest, CA 92630 in Orange County. The practice phone is (800) 571-5202.
- National Vision, Inc.23600 El Toro Rd, Lake Forest, CA 92630 · Orange CountyPhone(800) 571-5202
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mark A. Grandas is affiliated with 2 sites of care and 1 medical group
Mark Grandas' primary practice is National Vision, Inc. in Lake Forest, California. Dmand AI also links Mark Grandas to 1 physician office and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Mark A. Grandas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Grandas practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| National Vision, Inc. | 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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Mark A. Grandas is one of 7,206 optometrists in California
Optometrist is Mark Grandas' primary specialty in the NPI Registry, under taxonomy code 152W00000X. Mark Grandas is licensed in Pennsylvania.
Specialties and state licenses
- Optometrist, PennsylvaniaPrimary
Optometrists near Mark Grandas
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 A. Grandas treated 67 Medicare patients in 2024, average age 76
CMS counts 67 Medicare patients who saw Mark Grandas in 2024. The largest group is 65 to 74, with 33 patients. 75% of them have high cholesterol, and 73% have high blood pressure. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Grandas' median patient age at 70, with 59% women.
Mark Grandas' Medicare patients by age, 2024
Mark Grandas' Medicare patients by sex, 2024
- Women4770%
- Men2030%
Chronic conditions among Mark Grandas' Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis45%
- Diabetes28%
- Anxiety25%
- Ischemic heart disease22%
- Mood disorders21%
- Chronic kidney disease19%
Share of Medicare patients with each condition. A patient can have several.
Mark Grandas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark A. Grandas wrote 268 Medicare Part D claims in 2024
In 2024, Mark Grandas wrote 268 Medicare Part D claims for 91 patients. 66% of them were for generic drugs.
Mark Grandas' Part D claims by kind of drug, 2024
- Generic176 claims66%
- Brand-name92 claims34%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Mark A. Grandas graduated from Pennsylvania College of Optometry
Mark Grandas graduated from Pennsylvania College of Optometry in 2000.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Mark A. Grandas'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| 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) |
| 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 Mark A. Grandas
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 A. Grandas' NPI number?
Mark A. Grandas' NPI number is 1881675270. It was assigned on November 11, 2005, and it is active in the NPI Registry.
What does Mark A. Grandas specialize in?
Mark A. Grandas is an optometrist in Lake Forest, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Mark A. Grandas practice?
Mark Grandas practices at 23600 El Toro Rd, Lake Forest, CA 92630. Mark Grandas' primary practice is National Vision, Inc. in Lake Forest, California. Dmand AI also links Mark Grandas to 1 physician office and 1 medical group.
What is Mark A. Grandas' office phone number?
The practice phone on file for Mark Grandas is (800) 571-5202.
What is Mark A. Grandas' medical license number?
Mark Grandas holds Pennsylvania license OEG000064.
How many Medicare patients does Mark A. Grandas see?
CMS counts 67 Medicare patients who saw Mark Grandas in 2024, with an average age of 76.
Where did Mark A. Grandas go to medical school?
Mark Grandas graduated from Pennsylvania College of Optometry in 2000.
How long has Mark A. Grandas been practicing?
Mark Grandas graduated from medical school in 2000, 26 years ago.
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