Gregory Herbart, OD
- Medicare patients, 2024
- 132
- Part D claims, 2024
- 133
- Industry payments
- $14
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 735 John R Rd, Troy, MI 48083
- Practice phone
- Call (248) 588-9300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pcor
Troy, Michigan
Find Gregory Herbart'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 Herbart is an optometrist in Troy, Michigan
Gregory Herbart practices at Pcor in Troy, Michigan.
Gregory Herbart's NPI, 1871532432, was assigned on June 6, 2006. Gregory Herbart graduated from Ferris State College - College of Optometry in 1985. Gregory Herbart holds Michigan license GH003015.
- NPI
- 1871532432NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486820701
- NPI enumeration date
- June 6, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (248) 588-9300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory Herbart practices at Pcor in Troy, Michigan
Gregory Herbart's primary practice is Pcor, at 735 John R Rd, Troy, MI 48083 in Oakland County. The practice phone is (248) 588-9300.
- Pcor735 John R Rd, Troy, MI 48083 · Oakland CountyPhone(248) 588-9300
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Gregory Herbart is affiliated with 2 sites of care and 1 medical group
Gregory Herbart's primary practice is Pcor in Troy, Michigan. Dmand AI also links Gregory Herbart to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Gregory Herbart's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Herbart practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pcor | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregory Herbart is one of 1,416 optometrists in Michigan
Optometrist is Gregory Herbart's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Gregory Herbart is licensed in Michigan.
Specialties and state licenses
- Optometrist, MichiganPrimary
Optometrists near Gregory Herbart
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 Herbart treated 132 Medicare patients in 2024, average age 77
CMS counts 132 Medicare patients who saw Gregory Herbart in 2024. The largest group is 75 to 84, with 62 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.08, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregory Herbart's median patient age at 69, with 61% women.
Gregory Herbart's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Gregory Herbart's Medicare patients by sex, 2024
- Women8363%
- Men4937%
Chronic conditions among Gregory Herbart's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Diabetes43%
- Chronic kidney disease34%
- Ischemic heart disease33%
- Anxiety27%
- Atrial fibrillation20%
Share of Medicare patients with each condition. A patient can have several.
Gregory Herbart's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women61%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregory Herbart wrote 133 Medicare Part D claims in 2024
In 2024, Gregory Herbart wrote 133 Medicare Part D claims for 73 patients. 78% of them were for generic drugs.
Gregory Herbart's Part D claims by kind of drug, 2024
- Generic104 claims78%
- Brand-name29 claims22%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Gregory Herbart takes part in Medicare
Gregory Herbart 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)
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Gregory Herbart received $14 in industry payments in 2025
CMS Open Payments shows 1 general payment to Gregory Herbart from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $14.
Companies that paid Gregory Herbart 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 Herbart graduated from Ferris State College - College of Optometry
Gregory Herbart graduated from Ferris State College - College of Optometry in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gregory Herbart'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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 Herbart
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 Herbart's NPI number?
Gregory Herbart's NPI number is 1871532432. It was assigned on June 6, 2006, and it is active in the NPI Registry.
What does Gregory Herbart specialize in?
Gregory Herbart is an optometrist in Troy, Michigan. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Gregory Herbart practice?
Gregory Herbart practices at 735 John R Rd, Troy, MI 48083. Gregory Herbart's primary practice is Pcor in Troy, Michigan. Dmand AI also links Gregory Herbart to 1 group practice or clinic and 1 medical group.
What is Gregory Herbart's office phone number?
The practice phone on file for Gregory Herbart is (248) 588-9300.
What is Gregory Herbart's medical license number?
Gregory Herbart holds Michigan license GH003015.
Does Gregory Herbart accept Medicare?
Yes. CMS lists Gregory Herbart as accepting Medicare assignment.
How many Medicare patients does Gregory Herbart see?
CMS counts 132 Medicare patients who saw Gregory Herbart in 2024, with an average age of 77.
Where did Gregory Herbart go to medical school?
Gregory Herbart graduated from Ferris State College - College of Optometry in 1985.
Has Gregory Herbart received payments from drug or device companies?
CMS Open Payments shows $14 in general payments to Gregory Herbart from 1 company from 2025 to 2025. The largest total came from Novo Nordisk Inc.
How long has Gregory Herbart been practicing?
Gregory Herbart graduated from medical school in 1985, 41 years ago.
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