Gregory Alexander Kraskowsky, OD
- Medicare patients, 2024
- 187
- Part D claims, 2024
- 40
- Hospital affiliations
- 2
- Industry payments
- $27
- State license
- 1
- Practice address
- 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598
- Practice phone
- Call (925) 939-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Gregory Kraskowsky'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.
Gregory Alexander Kraskowsky is an optometrist in Walnut Creek, California
Gregory Kraskowsky practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health.
Gregory Kraskowsky's NPI, 1952440158, was assigned on February 5, 2007. Gregory Kraskowsky holds California license 11477.
- NPI
- 1952440158NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375638497
- NPI enumeration date
- February 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (925) 939-3000
- 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; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory Alexander Kraskowsky practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California
Gregory Kraskowsky's primary practice is John Muir Medical Center, Walnut Creek, at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (925) 939-3000.
- John Muir Medical Center, Walnut Creek1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 · Contra Costa CountyPhone(925) 939-3000
Source: Dmand AI Affiliation Data
Gregory Alexander Kraskowsky is affiliated with 3 sites of care
Gregory Kraskowsky's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dmand AI also links Gregory Kraskowsky to 1 hospital and 1 physician office, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Gregory Alexander Kraskowsky's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Kraskowsky practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John Muir Medical Center, Walnut Creek | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across John Muir Health and 6.2K+ hospitals, with verified contacts in the same login.
Gregory Alexander Kraskowsky is one of 7,206 optometrists in California
Optometrist is Gregory Kraskowsky's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Gregory Kraskowsky is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Gregory Kraskowsky
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
Gregory Alexander Kraskowsky treated 187 Medicare patients in 2024, average age 74
CMS counts 187 Medicare patients who saw Gregory Kraskowsky in 2024. The largest group is 65 to 74, with 110 patients. 75% of them have high cholesterol, and 52% have high blood pressure. Their average risk score is 0.76, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregory Kraskowsky's median patient age at 66, with 59% women.
Gregory Kraskowsky's Medicare patients by age, 2024
Gregory Kraskowsky's Medicare patients by sex, 2024
- Women11763%
- Men7037%
Chronic conditions among Gregory Kraskowsky's Medicare patients, 2024
- High cholesterol75%
- High blood pressure52%
- Arthritis39%
- Osteoporosis22%
- Anxiety17%
- Ischemic heart disease15%
- Atrial fibrillation13%
- Cancer13%
Share of Medicare patients with each condition. A patient can have several.
Gregory Kraskowsky's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women59%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregory Alexander Kraskowsky wrote 40 Medicare Part D claims in 2024
In 2024, Gregory Kraskowsky wrote 40 Medicare Part D claims for 23 patients. 30% of them were for generic drugs.
Gregory Kraskowsky's Part D claims by kind of drug, 2024
- Generic12 claims30%
- Brand-name28 claims70%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Gregory Alexander Kraskowsky takes part in Medicare
Gregory Kraskowsky 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Gregory Alexander Kraskowsky received $27 in industry payments in 2025
CMS Open Payments shows 1 general payment to Gregory Kraskowsky from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $27.
Companies that paid Gregory Kraskowsky 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 Gregory Alexander Kraskowsky'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 DataDmand AI Org Hierarchy 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) |
| 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 Gregory Alexander Kraskowsky
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory Alexander Kraskowsky's NPI number?
Gregory Alexander Kraskowsky's NPI number is 1952440158. It was assigned on February 5, 2007, and it is active in the NPI Registry.
What does Gregory Alexander Kraskowsky specialize in?
Gregory Alexander Kraskowsky is an optometrist in Walnut Creek, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Gregory Alexander Kraskowsky practice?
Gregory Kraskowsky practices at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598. Gregory Kraskowsky's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dmand AI also links Gregory Kraskowsky to 1 hospital and 1 physician office.
What is Gregory Alexander Kraskowsky's office phone number?
The practice phone on file for Gregory Kraskowsky is (925) 939-3000.
What is Gregory Alexander Kraskowsky's medical license number?
Gregory Kraskowsky holds California license 11477.
Which hospitals is Gregory Alexander Kraskowsky affiliated with?
Gregory Kraskowsky practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California. Dmand AI links Gregory Kraskowsky to 1 more hospital.
Does Gregory Alexander Kraskowsky accept Medicare?
Yes. CMS lists Gregory Kraskowsky as accepting Medicare assignment.
How many Medicare patients does Gregory Alexander Kraskowsky see?
CMS counts 187 Medicare patients who saw Gregory Kraskowsky in 2024, with an average age of 74.
Has Gregory Alexander Kraskowsky received payments from drug or device companies?
CMS Open Payments shows $27 in general payments to Gregory Kraskowsky from 1 company from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Gregory Alexander Kraskowsky been practicing?
Gregory Kraskowsky graduated from medical school in 2000, 26 years ago.
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