Gregory Kalkofen, OD
NPI 1669485801 · Optometrist · Clinton Twp, MI
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Kalkofen, OD is a Optometrist provider in Clinton Twp, MI (NPI 1669485801).
Provider details
- NPI number
- 1669485801
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- 4901003953 (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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
291 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 112 | $57 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 64 | $91 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 41 | $124 |
| Photography of the Retina92250 | 26 | $36 |
| New Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 15 Minutes Or More99202 | 17 | $73 |
| Established Patient Complete Exam of Visual System92014 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 129 | 23 |
| Prednisolone Acetate | 37 | 24 |
| Timolol Maleate | 34 | — |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 15 | 15 |
| Perfluorohexyloctane/Pfbrand: Miebo | 14 | — |
| Doxycycline Monohydrate | 12 | — |
| Cyclosporinebrand: Restasis | 11 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$78 across 5 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
Registry dates
- Enumerated
- 2006-08-15
- Last updated
- 2008-03-11
Frequently asked questions
- What is Gregory Kalkofen's NPI number?
- Gregory Kalkofen's National Provider Identifier (NPI) is 1669485801, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Kalkofen's specialty?
- Gregory Kalkofen is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Gregory Kalkofen located?
- Gregory Kalkofen's practice location on file with NPPES is 42550 Garfield, Clinton Twp, MI 48038-1644.
- What is Gregory Kalkofen's phone number?
- The practice phone number listed in the NPPES registry for Gregory Kalkofen is (586) 263-9708.
- Does Gregory Kalkofen accept Medicare?
- Gregory Kalkofen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Kalkofen's NPI active?
- Yes — Gregory Kalkofen's NPI (1669485801) is active in the NPPES registry as of the last update on 2008-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.