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Gregory Leon Patera, OD

  • Ionia, MI
  • Optometrist
NPI1245234731
Part D claims, 2024
39
Hospital affiliations
1
Medical group
1
State license
1
Year NPI issued
2005
Practice address
537 W Main St, Ionia, MI 48846
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Grand Rapids Ophthalmology - HOPD

Critical Access Hospital · Ionia, Michigan

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Gregory Leon Patera is an optometrist in Ionia, Michigan

Gregory Patera practices at Grand Rapids Ophthalmology - HOPD in Ionia, Michigan.

Gregory Patera's NPI, 1245234731, was assigned on June 13, 2005. Gregory Patera graduated from Illinois College of Optometry at Chicago in 1973. Gregory Patera holds Michigan license 4901002424.

NPI and contact details
NPI
1245234731NPI Registry (opens in a new tab)
NPI enumeration date
June 13, 2005
NPI status
Active
Professional email
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Personal email
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Mobile number
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Sex
Male
Estimated age
79
Medical school graduation
1973

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data

Gregory Leon Patera practices at Grand Rapids Ophthalmology - HOPD in Ionia, Michigan

Gregory Patera's primary practice is Grand Rapids Ophthalmology - HOPD, at 537 W Main St, Ionia, MI 48846.

  • Grand Rapids Ophthalmology - HOPD
    537 W Main St, Ionia, MI 48846

Source: Dmand AI Affiliation Data

Gregory Leon Patera is affiliated with 2 sites of care and 1 medical group

Gregory Patera's primary practice is Grand Rapids Ophthalmology - HOPD in Ionia, Michigan. Dmand AI also links Gregory Patera to 1 ambulatory surgery center and 1 medical group, each named with a free account. Gregory Patera's employer is on file too: a hospital.

Grand Rapids Ophthalmology - HOPDCritical Access Hospital · Ionia, MichiganPrimary
1 ambulatory surgery centerName with a free account1 medical groupName with a free accountEmployer: hospitalName with a free account
See all 3 affiliations for Gregory Patera

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Gregory Leon Patera's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Patera practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Grand Rapids Ophthalmology - HOPDAvailable with a free account
+1 more site and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Gregory Leon Patera is one of 1,416 optometrists in Michigan

Optometrist is Gregory Patera's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Gregory Patera is licensed in Michigan.

Specialties and state licenses

  • Optometrist, MichiganPrimaryLicense 4901002424 · taxonomy 152W00000X

Optometrists near Gregory Patera

Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.

1,416optometrists in Michigan
7optometrists in Ionia

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Gregory Leon Patera's patients have a median age of 75

Across all payers, Dmand AI patient panel data puts Gregory Patera's median patient age at 75, with 64% women.

Gregory Patera's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 75

Patient panel by sex, all payers

  • Women64%
  • Men36%

Source: Dmand AI Patient Panel Data

Gregory Leon Patera wrote 39 Medicare Part D claims in 2024

In 2024, Gregory Patera wrote 39 Medicare Part D claims for 16 patients. 36% of them were for generic drugs.

Part D claims, 202439
Part D patients16

Gregory Patera's Part D claims by kind of drug, 2024

  • Generic14 claims36%
  • Brand-name25 claims64%

Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data

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Gregory Leon Patera graduated from Illinois College of Optometry at Chicago

Gregory Patera graduated from Illinois College of Optometry at Chicago in 1973.

  1. Medical schoolIllinois College of Optometry at Chicago

Source: Dmand AI Professional Profile Data

Sources for Gregory Leon Patera's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Part D prescribingMedicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Gregory Leon Patera

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 Leon Patera's NPI number?

Gregory Leon Patera's NPI number is 1245234731. It was assigned on June 13, 2005, and it is active in the NPI Registry.

What does Gregory Leon Patera specialize in?

Gregory Leon Patera is an optometrist in Ionia, Michigan. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).

Where does Gregory Leon Patera practice?

Gregory Patera practices at 537 W Main St, Ionia, MI 48846. Gregory Patera's primary practice is Grand Rapids Ophthalmology - HOPD in Ionia, Michigan. Dmand AI also links Gregory Patera to 1 ambulatory surgery center and 1 medical group.

What is Gregory Leon Patera's medical license number?

Gregory Patera holds Michigan license 4901002424.

Where did Gregory Leon Patera go to medical school?

Gregory Patera graduated from Illinois College of Optometry at Chicago in 1973.

How long has Gregory Leon Patera been practicing?

Gregory Patera graduated from medical school in 1973, 53 years ago.

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