Gregory Declark, DC
- Medicare patients, 2026
- 11
- Hospital affiliations
- 1
- State license
- 1
- Year NPI issued
- 2017
- Practice address
- 2650 Ridge Ave, Evanston, IL 60201
- Practice phone
- Call (847) 570-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Gregory Declark'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 Declark is a chiropractor in Evanston, Illinois
Gregory Declark practices at Evanston Hospital in Evanston, Illinois, part of Endeavor Health.
Gregory Declark's NPI, 1699288837, was assigned on November 9, 2017. Gregory Declark graduated from Palmer College Chiropractic - Davenport in 2016. Gregory Declark holds Illinois license 038.013094.
- NPI
- 1699288837NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3577896984
- NPI enumeration date
- November 9, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 570-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory Declark practices at Evanston Hospital in Evanston, Illinois
Gregory Declark's primary practice is Evanston Hospital, at 2650 Ridge Ave, Evanston, IL 60201 in Cook County. The practice phone is (847) 570-2000.
- Evanston Hospital2650 Ridge Ave, Evanston, IL 60201 · Cook CountyPhone(847) 570-2000
Source: Dmand AI Affiliation Data
Gregory Declark is affiliated with 2 sites of care
Gregory Declark's primary practice is Evanston Hospital in Evanston, Illinois, part of Endeavor Health. Dmand AI also links Gregory Declark to 1 physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Gregory Declark's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Declark practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Evanston Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregory Declark is one of 2,276 chiropractors in Illinois
Chiropractor is Gregory Declark's primary specialty in the NPI Registry, under taxonomy code 111N00000X. Gregory Declark is licensed in Illinois.
Specialties and state licenses
- Chiropractor, IllinoisPrimary
Chiropractors near Gregory Declark
Counts of chiropractors 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 Declark treated 11 Medicare patients in 2026, average age 73
CMS counts 11 Medicare patients who saw Gregory Declark in 2026. The largest group is under 65, with 0 patients. Their average risk score is 1.36, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregory Declark's median patient age at 49, with 63% women.
Gregory Declark's Medicare patients by age, 2026
CMS leaves out age groups with fewer than 11 patients.
Gregory Declark's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 49
Patient panel by sex, all payers
- Women63%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2026 data
How Gregory Declark takes part in Medicare
Gregory Declark 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)
Gregory Declark graduated from Palmer College Chiropractic - Davenport
Gregory Declark graduated from Palmer College Chiropractic - Davenport in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gregory Declark'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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 Declark
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 Declark's NPI number?
Gregory Declark's NPI number is 1699288837. It was assigned on November 9, 2017, and it is active in the NPI Registry.
What does Gregory Declark specialize in?
Gregory Declark is a chiropractor in Evanston, Illinois. The primary specialty in the NPI Registry is Chiropractor (taxonomy code 111N00000X).
Where does Gregory Declark practice?
Gregory Declark practices at 2650 Ridge Ave, Evanston, IL 60201. Gregory Declark's primary practice is Evanston Hospital in Evanston, Illinois, part of Endeavor Health. Dmand AI also links Gregory Declark to 1 physician office, and a free account names each one.
What is Gregory Declark's office phone number?
The practice phone on file for Gregory Declark is (847) 570-2000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Gregory Declark's email address?
Dmand AI checks professional and personal email addresses for Gregory Declark through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Gregory Declark's medical license number?
Gregory Declark holds Illinois license 038.013094.
Which hospitals is Gregory Declark affiliated with?
Gregory Declark practices at Evanston Hospital in Evanston, Illinois.
Does Gregory Declark accept Medicare?
Yes. CMS lists Gregory Declark as accepting Medicare assignment.
How many Medicare patients does Gregory Declark see?
CMS counts 11 Medicare patients who saw Gregory Declark in 2026, with an average age of 73.
Where did Gregory Declark go to medical school?
Gregory Declark graduated from Palmer College Chiropractic - Davenport in 2016.
How long has Gregory Declark been practicing?
Gregory Declark graduated from medical school in 2016, 10 years ago.
What EHR does Gregory Declark's practice use?
Dmand AI tracks the EHR system at Evanston Hospital and at 1 more affiliated site. The vendor and product are available with a free Dmand AI account.
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