Gregory Popowitz, OD
NPI 1336325414 · Optometrist · Lansing, MI
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Popowitz, OD is a Optometrist provider in Lansing, MI (NPI 1336325414).
Provider details
- NPI number
- 1336325414
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4901003607 (MI)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
388 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Photography of Content of Eyes92285 | 99 | $18 |
| Exam of Visual Field With Intermediate Testing92082 | 74 | $42 |
| Established Patient Complete Exam of Visual System92014 | 72 | $117 |
| Photography of the Retina92250 | 52 | $32 |
| New Patient Complete Exam of Visual System92004 | 35 | $139 |
| Exam to Measure Eye Deviation and Range of Motion92060 | 34 | $59 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Cyclosporinebrand: Restasis Multidose | 21 |
| Latanoprost | 20 |
| Cyclosporinebrand: Restasis | 11 |
| Tobramycin | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$244 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 5700 Marsh RdHaslett, MI 48840-8987Phone: (517) 339-4100Fax: (517) 339-4199
Registry dates
- Enumerated
- 2008-01-18
- Last updated
- 2024-02-16
- Certified
- 2024-02-16
Frequently asked questions
- What is Gregory Popowitz's NPI number?
- Gregory Popowitz's National Provider Identifier (NPI) is 1336325414, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Popowitz's specialty?
- Gregory Popowitz is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Gregory Popowitz located?
- Gregory Popowitz's practice location on file with NPPES is 5403 W Saginaw Hwy, Lansing, MI 48917-1918.
- What is Gregory Popowitz's phone number?
- The practice phone number listed in the NPPES registry for Gregory Popowitz is (517) 886-0222.
- Does Gregory Popowitz accept Medicare?
- Gregory Popowitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Popowitz's NPI active?
- Yes — Gregory Popowitz's NPI (1336325414) is active in the NPPES registry as of the last update on 2024-02-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.