Dr. Karen E. Callahan, MD
- Medicare services, 2024
- 364
- Medicare patients, 2024
- 120
- Part D claims, 2024
- 5,200
- Hospital affiliations
- 3
- Industry payments
- $763
- Practice address
- 2200 Lake Shore Dr, Birmingham, AL 35209
- Practice phone
- Call (205) 871-6926
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Grayson and Associates
Birmingham, Alabama
Find Dr. 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.
Dr. Karen E. Callahan is a child and adolescent psychiatrist in Birmingham, Alabama
Dr. Callahan practices at Grayson and Associates in Birmingham, Alabama.
Dr. Callahan's NPI, 1154371508, was assigned on May 10, 2006. Dr. Callahan graduated from University of Alabama School of Medicine in 1990. Dr. Callahan holds Alabama license 00016038.
- NPI
- 1154371508NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3173565710
- NPI enumeration date
- May 10, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (205) 871-6926
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Karen E. Callahan practices at Grayson and Associates in Birmingham, Alabama
Dr. Callahan's primary practice is Grayson and Associates, at 2200 Lake Shore Dr, Birmingham, AL 35209 in Jefferson County. The practice phone is (205) 871-6926.
- Grayson and Associates2200 Lake Shore Dr, Birmingham, AL 35209 · Jefferson CountyPhone(205) 871-6926
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Karen E. Callahan is affiliated with 5 sites of care and 2 medical groups
Dr. Callahan's primary practice is Grayson and Associates in Birmingham, Alabama. Dr. Callahan is also affiliated with UAB Hospital. The medical group on file is Grayson & Associates P.C. Dmand AI also links Dr. Callahan to 2 more hospitals, 1 group practice or clinic 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 Dr. Karen E. Callahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Callahan practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Grayson and Associates | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karen E. Callahan is one of 49 childs and adolescent psychiatrists in Alabama
Child and adolescent psychiatry is Dr. Callahan's primary specialty in the NPI Registry, under taxonomy code 2084P0804X. Dr. Callahan is licensed in Alabama.
Specialties and state licenses
- Child and adolescent psychiatry, AlabamaPrimary
Childs and adolescent psychiatrists near Dr. Callahan
Counts of childs and adolescent psychiatrists 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
Dr. Karen E. Callahan billed Medicare for 364 services in 2024
CMS data shows 364 Medicare services from Dr. Callahan across 4 procedure codes in 2024, for 120 Medicare patients. Medicare paid $20,750 for them.
Where Dr. Callahan's Medicare services took place, 2024
- In an office11632%
- In a facility24868%
Dr. Callahan compared with the Alabama median for childs and adolescent psychiatrists, 2024
- Dr. Callahan
- Alabama median
- Medicare services
- 364vs 894.1 times
- Medicare patients
- 120vs 313.9 times
- Part D claims
- 4,959vs 14733.7 times
Medians across 48 childs and adolescent psychiatrists in Alabama with Dmand AI profiles that report each measure.
Dr. Callahan's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Callahan and other childs and adolescent psychiatrists in Alabama.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karen E. Callahan treated 120 Medicare patients in 2024, average age 58
CMS counts 120 Medicare patients who saw Dr. Callahan in 2024. The largest group is under 65, with 71 patients. 75% of them have anxiety, and 75% have mood disorders. 49% are also on Medicaid. Their average risk score is 1.45, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Callahan's median patient age at 34, with 60% women.
Dr. Callahan's Medicare patients by age, 2024
Dr. Callahan's Medicare patients by sex, 2024
- Women7260%
- Men4840%
Chronic conditions among Dr. Callahan's Medicare patients, 2024
- Anxiety75%
- Mood disorders75%
- Depression68%
- High blood pressure64%
- High cholesterol54%
- Schizophrenia and other psychoses45%
- Bipolar disorder43%
- Arthritis38%
Share of Medicare patients with each condition. A patient can have several.
Dr. 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 34
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karen E. Callahan wrote 5,200 Medicare Part D claims in 2024
In 2024, Dr. Callahan wrote 5,200 Medicare Part D claims for 241 patients. 95% of them were for generic drugs. CMS names the drug for 4,959 of them, across 68 drugs with 11 or more claims each, at $554,950 in total drug cost.
Dr. Callahan's Part D claims by kind of drug, 2024
- Generic4,916 claims95%
- Brand-name284 claims5%
Dr. Callahan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Callahan's Part D claims, 2024
- Antipsychotics, patients 65 and over3%150 of 5,200 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Karen E. Callahan offers telehealth to Medicare patients
Dr. Callahan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Callahan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Karen E. Callahan received $763 in industry payments from 2024 to 2025
CMS Open Payments shows 52 general payments to Dr. Callahan from 12 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $380.
General payments to Dr. Callahan by program year, 2024 to 2025
Companies that paid Dr. Callahan the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Karen E. Callahan graduated from University of Alabama School of Medicine
Dr. Callahan graduated from University of Alabama School of Medicine in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Karen E. 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 services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)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) |
| 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 Dr. Karen E. 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 Dr. Karen E. Callahan's NPI number?
Dr. Karen E. Callahan's NPI number is 1154371508. It was assigned on May 10, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen E. Callahan?
Dr. Karen E. Callahan is a child and adolescent psychiatrist in Birmingham, Alabama. The primary specialty in the NPI Registry is Child & Adolescent Psychiatry Physician (taxonomy code 2084P0804X).
Where does Dr. Karen E. Callahan practice?
Dr. Callahan practices at 2200 Lake Shore Dr, Birmingham, AL 35209. Dr. Callahan's primary practice is Grayson and Associates in Birmingham, Alabama. Dmand AI also links Dr. Callahan to 2 hospitals, 1 group practice or clinic and 1 medical group.
What is Dr. Karen E. Callahan's office phone number?
The practice phone on file for Dr. Callahan is (205) 871-6926.
What is Dr. Karen E. Callahan's medical license number?
Dr. Callahan holds Alabama license 00016038.
Which hospitals is Dr. Karen E. Callahan affiliated with?
Dr. Callahan is affiliated with UAB Hospital. Dmand AI links Dr. Callahan to 2 more hospitals.
What medical group is Dr. Karen E. Callahan part of?
Dr. Callahan is linked to Grayson & Associates P.C. Dmand AI links Dr. Callahan to 1 more medical group.
Does Dr. Karen E. Callahan accept Medicare?
Yes. CMS data shows Dr. Callahan billed Medicare for 364 services in 2024, and Dr. Callahan accepts Medicare assignment.
Does Dr. Karen E. Callahan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Callahan as offering telehealth services.
How many Medicare patients does Dr. Karen E. Callahan see?
CMS counts 120 Medicare patients who saw Dr. Callahan in 2024, with an average age of 58.
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What services does Dr. Karen E. Callahan bill to Medicare?
In 2024, Dr. Callahan's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99213) and hospital inpatient care (99223).
Where did Dr. Karen E. Callahan go to medical school?
Dr. Callahan graduated from University of Alabama School of Medicine in 1990.
What drugs does Dr. Karen E. Callahan prescribe most?
In 2024 Medicare Part D data, Dr. Callahan's most prescribed drugs by claims were Alprazolam, Doxepin HCl and Baclofen.
Has Dr. Karen E. Callahan received payments from drug or device companies?
CMS Open Payments shows $763 in general payments to Dr. Callahan from 12 companies from 2024 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Karen E. Callahan been practicing?
Dr. Callahan graduated from medical school in 1990, 36 years ago.
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