Gregg A. Cognac, PA-C
- Medicare patients, 2024
- 259
- Part D claims, 2024
- 113
- MIPS score, 2024
- 95
- Hospital affiliations
- 2
- Medical groups
- 2
- Practice address
- 4201 Medical Center Drive, Mchenry, IL 60050
- Practice phone
- Call (815) 344-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Gregg Cognac'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.
Gregg A. Cognac is a physician assistant in Mchenry, Illinois
Gregg Cognac practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare.
Gregg Cognac's NPI, 1467409508, was assigned on May 27, 2006. Gregg Cognac holds Illinois license 085001346.
- NPI
- 1467409508NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0446359061
- NPI enumeration date
- May 27, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (815) 344-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregg A. Cognac practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois
Gregg Cognac's primary practice is Northwestern Medicine McHenry Hospital, at 4201 Medical Center Drive, Mchenry, IL 60050 in Mc Henry County. The practice phone is (815) 344-5000.
- Northwestern Medicine McHenry Hospital4201 Medical Center Drive, Mchenry, IL 60050 · Mc Henry CountyPhone(815) 344-5000
Source: Dmand AI Affiliation Data
Gregg A. Cognac is affiliated with 2 sites of care and 2 medical groups
Gregg Cognac's primary practice is Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Gregg Cognac to 1 more hospital and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Gregg A. Cognac's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregg Cognac practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medicine McHenry Hospital | 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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Gregg A. Cognac is one of 4,299 physician assistants in Illinois
Physician assistant is Gregg Cognac's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Gregg Cognac is licensed in Illinois.
Specialties and state licenses
- Physician assistant, IllinoisPrimary
Physician assistants near Gregg Cognac
Counts of physician assistants 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
Gregg A. Cognac treated 259 Medicare patients in 2024, average age 76
CMS counts 259 Medicare patients who saw Gregg Cognac in 2024. The largest group is 75 to 84, with 94 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 14% are also on Medicaid. Their average risk score is 1.75, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Gregg Cognac's median patient age at 67, with 55% women.
Gregg Cognac's Medicare patients by age, 2024
Gregg Cognac's Medicare patients by sex, 2024
- Women15058%
- Men10942%
Chronic conditions among Gregg Cognac's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Arthritis59%
- Anxiety38%
- Diabetes36%
- Mood disorders36%
- Depression34%
- Ischemic heart disease34%
Share of Medicare patients with each condition. A patient can have several.
Gregg Cognac's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregg A. Cognac wrote 113 Medicare Part D claims in 2024
In 2024, Gregg Cognac wrote 113 Medicare Part D claims for 90 patients. 93% of them were for generic drugs.
Gregg Cognac's Part D claims by kind of drug, 2024
- Generic105 claims93%
- Brand-name and other8 claims7%
Drug classes CMS tracks in Gregg Cognac's Part D claims, 2024
- Opioids21%24 of 113 claims
- Antibiotics37%42 of 113 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Gregg A. Cognac scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Gregg Cognac for performance year 2024, reported through an alternative payment model (APM). Gregg Cognac accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Gregg Cognac's MIPS scores, performance year 2024
- 95of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Sources for Gregg A. Cognac'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 DataDmand AI Org Hierarchy 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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| 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 Gregg A. Cognac
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregg A. Cognac's NPI number?
Gregg A. Cognac's NPI number is 1467409508. It was assigned on May 27, 2006, and it is active in the NPI Registry.
What does Gregg A. Cognac specialize in?
Gregg A. Cognac is a physician assistant in Mchenry, Illinois. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Gregg A. Cognac practice?
Gregg Cognac practices at 4201 Medical Center Drive, Mchenry, IL 60050. Gregg Cognac's primary practice is Northwestern Medicine McHenry Hospital in Mchenry, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Gregg Cognac to 1 hospital and 1 medical group.
What is Gregg A. Cognac's office phone number?
The practice phone on file for Gregg Cognac is (815) 344-5000.
What is Gregg A. Cognac's medical license number?
Gregg Cognac holds Illinois license 085001346.
Which hospitals is Gregg A. Cognac affiliated with?
Gregg Cognac practices at Northwestern Medicine McHenry Hospital in Mchenry, Illinois. Dmand AI links Gregg Cognac to 1 more hospital.
What medical group is Gregg A. Cognac part of?
Gregg Cognac is linked to Northwestern Medical Faculty Foundation. Dmand AI links Gregg Cognac to 1 more medical group.
Does Gregg A. Cognac accept Medicare?
Yes. CMS lists Gregg Cognac as accepting Medicare assignment.
What is Gregg A. Cognac's MIPS score?
Gregg Cognac's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Gregg A. Cognac see?
CMS counts 259 Medicare patients who saw Gregg Cognac in 2024, with an average age of 76.
How long has Gregg A. Cognac been practicing?
Gregg Cognac graduated from medical school in 2017, 9 years ago.
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