David Ryan Harkema, OD
- Medicare patients, 2024
- 31
- Part D claims, 2024
- 83
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 38 N Union St, Sparta, MI 49345-1138
- Practice phone
- Call (616) 887-8811
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Sparta Optometry
Physician office · Sparta, Michigan
Find David Harkema'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.
David Ryan Harkema is an optometrist in Sparta, Michigan
David Harkema practices at Sparta Optometry in Sparta, Michigan.
David Harkema's NPI, 1457310203, was assigned on March 21, 2006. David Harkema graduated from Ferris State College - College of Optometry in 1992. David Harkema holds Michigan license 49010003629.
- NPI
- 1457310203NPI Registry (opens in a new tab)
- NPI enumeration date
- March 21, 2006
- NPI status
- Active
- Practice phone
- (616) 887-8811
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
David Ryan Harkema practices at Sparta Optometry in Sparta, Michigan
David Harkema's primary practice is Sparta Optometry, at 38 N Union St, Sparta, MI 49345-1138. The practice phone is (616) 887-8811.
- Sparta Optometry38 N Union St, Sparta, MI 49345-1138Phone(616) 887-8811
Source: Dmand AI Affiliation Data
David Ryan Harkema is affiliated with 1 site of care
David Harkema's primary practice is Sparta Optometry in Sparta, Michigan.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at David Ryan Harkema's practice
Dmand AI tracks the electronic health record (EHR) system at each site where David Harkema practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Sparta Optometry | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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David Ryan Harkema is one of 1,416 optometrists in Michigan
Optometrist is David Harkema's primary specialty in the NPI Registry, under taxonomy code 152W00000X. David Harkema is licensed in Michigan.
Specialties and state licenses
- Optometrist, MichiganPrimary
Optometrists near David Harkema
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
David Ryan Harkema treated 31 Medicare patients in 2024, average age 72
CMS counts 31 Medicare patients who saw David Harkema in 2024. The largest group is 65 to 74, with 17 patients. 68% of them have high cholesterol, and 65% have high blood pressure. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts David Harkema's median patient age at 68, with 54% women.
David Harkema's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
David Harkema's Medicare patients by sex, 2024
- Women1342%
- Men1858%
Chronic conditions among David Harkema's Medicare patients, 2024
- High cholesterol68%
- High blood pressure65%
- Diabetes58%
Share of Medicare patients with each condition. A patient can have several.
David Harkema's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
David Ryan Harkema wrote 83 Medicare Part D claims in 2024
In 2024, David Harkema wrote 83 Medicare Part D claims for 33 patients. 81% of them were for generic drugs.
David Harkema's Part D claims by kind of drug, 2024
- Generic67 claims81%
- Brand-name16 claims19%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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David Ryan Harkema graduated from Ferris State College - College of Optometry
David Harkema graduated from Ferris State College - College of Optometry in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for David Ryan Harkema'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) |
| 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 David Ryan Harkema
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is David Ryan Harkema's NPI number?
David Ryan Harkema's NPI number is 1457310203. It was assigned on March 21, 2006, and it is active in the NPI Registry.
What does David Ryan Harkema specialize in?
David Ryan Harkema is an optometrist in Sparta, Michigan. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does David Ryan Harkema practice?
David Harkema practices at 38 N Union St, Sparta, MI 49345-1138. David Harkema's primary practice is Sparta Optometry in Sparta, Michigan.
What is David Ryan Harkema's office phone number?
The practice phone on file for David Harkema is (616) 887-8811.
What is David Ryan Harkema's medical license number?
David Harkema holds Michigan license 49010003629.
How many Medicare patients does David Ryan Harkema see?
CMS counts 31 Medicare patients who saw David Harkema in 2024, with an average age of 72.
Where did David Ryan Harkema go to medical school?
David Harkema graduated from Ferris State College - College of Optometry in 1992.
How long has David Ryan Harkema been practicing?
David Harkema graduated from medical school in 1992, 34 years ago.
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