Gregory D. Popowitz, OD
- Medicare patients, 2024
- 116
- Part D claims, 2024
- 99
- Industry payments
- $195
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 5403 W Saginaw Hwy, Lansing, MI 48917
- Practice phone
- Call (517) 886-0222
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Clarkson Eyecare
Eye care practice · Lansing, Michigan
Find Gregory Popowitz'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 D. Popowitz is an optometrist in Lansing, Michigan
Gregory Popowitz practices at Clarkson Eyecare in Lansing, Michigan.
Gregory Popowitz's NPI, 1336325414, was assigned on January 18, 2008. Gregory Popowitz graduated from Ferris State College - College of Optometry in 1991. Gregory Popowitz holds Michigan license 4901003607.
- NPI
- 1336325414NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244301638
- NPI enumeration date
- January 18, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (517) 886-0222
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory D. Popowitz practices at Clarkson Eyecare in Lansing, Michigan
Gregory Popowitz's primary practice is Clarkson Eyecare, at 5403 W Saginaw Hwy, Lansing, MI 48917. The practice phone is (517) 886-0222.
- Clarkson Eyecare5403 W Saginaw Hwy, Lansing, MI 48917Phone(517) 886-0222
Source: Dmand AI Affiliation Data
Gregory D. Popowitz is affiliated with 2 sites of care and 2 medical groups
Gregory Popowitz's primary practice is Clarkson Eyecare in Lansing, Michigan. Dmand AI also links Gregory Popowitz to 2 medical groups and 1 group practice or clinic, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Gregory D. Popowitz's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Popowitz practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Clarkson Eyecare | Available with a free account |
| +1 more site and 2 medical groups | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Gregory D. Popowitz is one of 1,416 optometrists in Michigan
Optometrist is Gregory Popowitz's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Gregory Popowitz is licensed in Michigan.
Specialties and state licenses
- Optometrist, MichiganPrimary
Optometrists near Gregory Popowitz
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 D. Popowitz treated 116 Medicare patients in 2024, average age 61
CMS counts 116 Medicare patients who saw Gregory Popowitz in 2024. The largest group is under 65, with 61 patients. 55% of them have high blood pressure, and 50% have high cholesterol. 72% are also on Medicaid. Their average risk score is 1.28, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregory Popowitz's median patient age at 37, with 63% women.
Gregory Popowitz's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Gregory Popowitz's Medicare patients by sex, 2024
- Women7565%
- Men4135%
Chronic conditions among Gregory Popowitz's Medicare patients, 2024
- High blood pressure55%
- High cholesterol50%
- Arthritis36%
- Mood disorders36%
- Anxiety34%
- Depression32%
- Diabetes32%
- COPD19%
Share of Medicare patients with each condition. A patient can have several.
Gregory Popowitz's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women63%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregory D. Popowitz wrote 99 Medicare Part D claims in 2024
In 2024, Gregory Popowitz wrote 99 Medicare Part D claims for 31 patients. 35% of them were for generic drugs.
Gregory Popowitz's Part D claims by kind of drug, 2024
- Generic35 claims35%
- Brand-name64 claims65%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Gregory D. Popowitz takes part in Medicare
Gregory Popowitz 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 D. Popowitz received $195 in industry payments in 2025
CMS Open Payments shows 2 general payments to Gregory Popowitz from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $106.
Companies that paid Gregory Popowitz the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Gregory D. Popowitz graduated from Ferris State College - College of Optometry
Gregory Popowitz graduated from Ferris State College - College of Optometry in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gregory D. Popowitz'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 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) |
| 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 Gregory D. Popowitz
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 D. Popowitz's NPI number?
Gregory D. Popowitz's NPI number is 1336325414. It was assigned on January 18, 2008, and it is active in the NPI Registry.
What does Gregory D. Popowitz specialize in?
Gregory D. Popowitz is an optometrist in Lansing, Michigan. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Gregory D. Popowitz practice?
Gregory Popowitz practices at 5403 W Saginaw Hwy, Lansing, MI 48917. Gregory Popowitz's primary practice is Clarkson Eyecare in Lansing, Michigan. Dmand AI also links Gregory Popowitz to 2 medical groups and 1 group practice or clinic.
What is Gregory D. Popowitz's office phone number?
The practice phone on file for Gregory Popowitz is (517) 886-0222.
What is Gregory D. Popowitz's medical license number?
Gregory Popowitz holds Michigan license 4901003607.
Does Gregory D. Popowitz accept Medicare?
Yes. CMS lists Gregory Popowitz as accepting Medicare assignment.
How many Medicare patients does Gregory D. Popowitz see?
CMS counts 116 Medicare patients who saw Gregory Popowitz in 2024, with an average age of 61.
Where did Gregory D. Popowitz go to medical school?
Gregory Popowitz graduated from Ferris State College - College of Optometry in 1991.
Has Gregory D. Popowitz received payments from drug or device companies?
CMS Open Payments shows $195 in general payments to Gregory Popowitz from 2 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Gregory D. Popowitz been practicing?
Gregory Popowitz graduated from medical school in 1991, 35 years ago.
Selling to optometrist practices?
See optometrists in Michigan by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card