Olivia F. Callahan, PA-C
- Medicare patients, 2024
- 237
- Part D claims, 2024
- 4,300
- Hospital affiliations
- 1
- Industry payments
- $433
- Medical groups
- 2
- Practice address
- 103 W Broadway Ave, Maryville, TN 37801
- Practice phone
- Call (865) 984-3864
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Blount Memorial Physician Group, Inc.
Maryville, Tennessee
Find Olivia 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.
Olivia F. Callahan is a physician assistant in Maryville, Tennessee
Olivia Callahan practices at Blount Memorial Physician Group, Inc. in Maryville, Tennessee.
Olivia Callahan's NPI, 1134602352, was assigned on September 13, 2018. Olivia Callahan holds Tennessee license 3699.
- NPI
- 1134602352NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7012260748
- NPI enumeration date
- September 13, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (865) 984-3864
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Olivia F. Callahan practices at Blount Memorial Physician Group, Inc. in Maryville, Tennessee
Olivia Callahan's primary practice is Blount Memorial Physician Group, Inc., at 103 W Broadway Ave, Maryville, TN 37801 in Blount County. The practice phone is (865) 984-3864.
- Blount Memorial Physician Group, Inc.103 W Broadway Ave, Maryville, TN 37801 · Blount CountyPhone(865) 984-3864
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Olivia F. Callahan is affiliated with 4 sites of care and 2 medical groups
Olivia Callahan's primary practice is Blount Memorial Physician Group, Inc. in Maryville, Tennessee. Olivia Callahan is also affiliated with Prisma Health Blount Memorial Hospital. The medical group on file is American Physician Partners. Dmand AI also links Olivia Callahan to 1 more group practice or clinic, 1 home health agency and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Olivia F. Callahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Olivia Callahan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Blount Memorial Physician Group, Inc. | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Olivia F. Callahan is one of 2,573 physician assistants in Tennessee
Physician assistant is Olivia Callahan's primary specialty in the NPI Registry, under taxonomy code 363A00000X. Olivia Callahan is licensed in Tennessee.
Specialties and state licenses
- Physician assistant, TennesseePrimary
Physician assistants near Olivia 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
Olivia F. Callahan treated 237 Medicare patients in 2024, average age 74
CMS counts 237 Medicare patients who saw Olivia Callahan in 2024. The largest group is 65 to 74, with 119 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.00, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Olivia Callahan's median patient age at 64, with 67% women.
Olivia Callahan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Olivia Callahan's Medicare patients by sex, 2024
- Women12352%
- Men11448%
Chronic conditions among Olivia Callahan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes35%
- Ischemic heart disease32%
- Chronic kidney disease31%
- COPD22%
- Mood disorders21%
Share of Medicare patients with each condition. A patient can have several.
Olivia 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 64
Patient panel by sex, all payers
- Women67%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Olivia F. Callahan wrote 4,300 Medicare Part D claims in 2024
In 2024, Olivia Callahan wrote 4,300 Medicare Part D claims for 621 patients. 87% of them were for generic drugs.
Olivia Callahan's Part D claims by kind of drug, 2024
- Generic3,752 claims87%
- Brand-name526 claims12%
- Other22 claims1%
Drug classes CMS tracks in Olivia Callahan's Part D claims, 2024
- Opioids2%91 of 4,300 claims
- Antibiotics3%110 of 4,300 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
How Olivia F. Callahan takes part in Medicare
Olivia Callahan 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)
For MedTech and pharma teams
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Olivia F. Callahan received $433 in industry payments in 2025
CMS Open Payments shows 24 general payments to Olivia Callahan from 10 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $114.
Companies that paid Olivia 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 Olivia F. 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 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) |
| 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 Olivia F. 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 Olivia F. Callahan's NPI number?
Olivia F. Callahan's NPI number is 1134602352. It was assigned on September 13, 2018, and it is active in the NPI Registry.
What does Olivia F. Callahan specialize in?
Olivia F. Callahan is a physician assistant in Maryville, Tennessee. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does Olivia F. Callahan practice?
Olivia Callahan practices at 103 W Broadway Ave, Maryville, TN 37801. Olivia Callahan's primary practice is Blount Memorial Physician Group, Inc. in Maryville, Tennessee. Dmand AI also links Olivia Callahan to 1 group practice or clinic, 1 home health agency and 1 medical group.
What is Olivia F. Callahan's office phone number?
The practice phone on file for Olivia Callahan is (865) 984-3864.
What is Olivia F. Callahan's medical license number?
Olivia Callahan holds Tennessee license 3699.
Which hospitals is Olivia F. Callahan affiliated with?
Olivia Callahan is affiliated with Prisma Health Blount Memorial Hospital.
What medical group is Olivia F. Callahan part of?
Olivia Callahan is linked to American Physician Partners. Dmand AI links Olivia Callahan to 1 more medical group.
Does Olivia F. Callahan accept Medicare?
Yes. CMS lists Olivia Callahan as accepting Medicare assignment.
How many Medicare patients does Olivia F. Callahan see?
CMS counts 237 Medicare patients who saw Olivia Callahan in 2024, with an average age of 74.
Has Olivia F. Callahan received payments from drug or device companies?
CMS Open Payments shows $433 in general payments to Olivia Callahan from 10 companies from 2025 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Olivia F. Callahan been practicing?
Olivia Callahan graduated from medical school in 2018, 8 years ago.
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