Daniel John Callahan, PA-C
- Medicare patients, 2024
- 72
- Part D claims, 2024
- 2,241
- Industry payments
- $894
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 100 Genevieve Ct, Peachtree City, GA 30269
- Practice phone
- Call (770) 486-1818
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Family Medicine Specialist
Peachtree City, Georgia
Find Daniel Callahan'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.
Daniel John Callahan is a physician assistant in Peachtree City, Georgia
Daniel Callahan practices at Family Medicine Specialist in Peachtree City, Georgia.
Daniel Callahan's NPI, 1265998439, was assigned on February 13, 2019. Daniel Callahan holds Georgia license 9243.
- NPI
- 1265998439NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799019527
- NPI enumeration date
- February 13, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (770) 486-1818
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Daniel John Callahan practices at Family Medicine Specialist in Peachtree City, Georgia
Daniel Callahan's primary practice is Family Medicine Specialist, at 100 Genevieve Ct, Peachtree City, GA 30269 in Fayette County. The practice phone is (770) 486-1818.
- Family Medicine Specialist100 Genevieve Ct, Peachtree City, GA 30269 · Fayette CountyPhone(770) 486-1818
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Daniel John Callahan is affiliated with 3 sites of care and 2 medical groups
Daniel Callahan's primary practice is Family Medicine Specialist in Peachtree City, Georgia. The medical group on file is Privia Medical Group, Georgia. Dmand AI also links Daniel Callahan to 2 more group practices and clinics 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 Daniel John Callahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Daniel Callahan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Family Medicine Specialist | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Daniel John Callahan is one of 3,653 physician assistants in Georgia
Physician assistant is Daniel Callahan's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Daniel Callahan is licensed in Georgia.
Specialties and state licenses
- Physician assistant, GeorgiaPrimary
Physician assistants near Daniel Callahan
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
Daniel John Callahan treated 72 Medicare patients in 2024, average age 72
CMS counts 72 Medicare patients who saw Daniel Callahan in 2024. The largest group is 65 to 74, with 44 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Daniel Callahan's median patient age at 51, with 51% women.
Daniel Callahan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Daniel Callahan's Medicare patients by sex, 2024
- Women3549%
- Men3751%
Chronic conditions among Daniel Callahan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Ischemic heart disease29%
- Anxiety26%
- Chronic kidney disease24%
- Diabetes24%
- Depression19%
Share of Medicare patients with each condition. A patient can have several.
Daniel Callahan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women51%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Daniel John Callahan wrote 2,241 Medicare Part D claims in 2024
In 2024, Daniel Callahan wrote 2,241 Medicare Part D claims for 233 patients. 85% of them were for generic drugs.
Daniel Callahan's Part D claims by kind of drug, 2024
- Generic1,914 claims85%
- Brand-name and other327 claims15%
Drug classes CMS tracks in Daniel Callahan's Part D claims, 2024
- Opioids0%11 of 2,241 claims
- Antibiotics6%125 of 2,241 claims
- Antipsychotics, patients 65 and over1%14 of 2,241 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
Daniel John Callahan offers telehealth to Medicare patients
Daniel Callahan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Daniel Callahan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Daniel John Callahan received $894 in industry payments in 2025
CMS Open Payments shows 50 general payments to Daniel Callahan from 17 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $170.
Companies that paid Daniel Callahan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Daniel John Callahan'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) |
| 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 Daniel John Callahan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Daniel John Callahan's NPI number?
Daniel John Callahan's NPI number is 1265998439. It was assigned on February 13, 2019, and it is active in the NPI Registry.
What does Daniel John Callahan specialize in?
Daniel John Callahan is a physician assistant in Peachtree City, Georgia. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Daniel John Callahan practice?
Daniel Callahan practices at 100 Genevieve Ct, Peachtree City, GA 30269. Daniel Callahan's primary practice is Family Medicine Specialist in Peachtree City, Georgia. Dmand AI also links Daniel Callahan to 2 group practices and clinics and 1 medical group.
What is Daniel John Callahan's office phone number?
The practice phone on file for Daniel Callahan is (770) 486-1818.
What is Daniel John Callahan's medical license number?
Daniel Callahan holds Georgia license 9243.
What medical group is Daniel John Callahan part of?
Daniel Callahan is linked to Privia Medical Group, Georgia. Dmand AI links Daniel Callahan to 1 more medical group.
Does Daniel John Callahan accept Medicare?
Yes. CMS lists Daniel Callahan as accepting Medicare assignment.
Does Daniel John Callahan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Daniel Callahan as offering telehealth services.
How many Medicare patients does Daniel John Callahan see?
CMS counts 72 Medicare patients who saw Daniel Callahan in 2024, with an average age of 72.
Has Daniel John Callahan received payments from drug or device companies?
CMS Open Payments shows $894 in general payments to Daniel Callahan from 17 companies from 2025 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Daniel John Callahan been practicing?
Daniel Callahan graduated from medical school in 2019, 7 years ago.
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