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Edit this profileAt a glance
- 4201 W Medical Center Dr, Mchenry, IL 60050
About Gregg Cognac
Gregg Cognac, P.A.-C is a physician assistant based in Mchenry, IL. According to Medicare claims data, Gregg cared for 243 Medicare patients across 245 services. The services billed most often include emergency department visit with moderate level of medical decision making, emergency department visit with high level of medical decision making, and emergency department visit with low level of medical decision making. The provider's National Provider Identifier (NPI) is 1467409508.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (815) 759-3100
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
4201 W MEDICAL CENTER DR
Mchenry, IL 60050
Procedures Most Often Billed to Medicare
245 services · 243 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
118 | More than most peers in Physician Assistant |
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
115 | More often than most peers in Physician Assistant |
| Emergency department visit with low level of medical decision making | Office visit | 99283 |
12 | Less often than most peers in Physician Assistant |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other physician assistants at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 22 related providers in 3 groups
Other physician assistants in Mchenry 6
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2017 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Gregg Cognac?
Gregg Cognac is a physician assistant in Mchenry, IL. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Gregg Cognac's address?
Gregg Cognac is listed at 4201 W Medical Center Dr, Mchenry, IL 60050. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Gregg Cognac?
The number on file is (815) 759-3100. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Gregg Cognac's NPI number?
Gregg Cognac's National Provider Identifier is 1467409508. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Gregg Cognac train?
Gregg Cognac attended Other, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How long has Gregg Cognac been practicing?
Gregg Cognac has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What procedures does Gregg Cognac perform?
According to Medicare billing data, Gregg Cognac the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Gregg Cognac confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Gregg Cognac. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.