Catherine Brittain Callahan, MD
Internal Medicine Physician · Charlotte, NC
Catherine Brittain Callahan, MD is an internal medicine physician with a practice address in Charlotte, North Carolina, and NPI 1407870926, issued on Jul 27, 2006. Check the license (North Carolina 200101316, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Catherine Brittain Callahan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 200101316 NC
92028 SC
Self-reported in NPPES; status is on the state search - Practice location
- 10635 Park RD Ste I, Charlotte, NC 28210
- Phone
- (704) 495-6334
- Enumerated
- Jul 27, 2006
- Record last updated
- May 6, 2026
- Medicaid IDs
- 89131X3 NC
1407870926 NC
N01317 SC - Medicare enrollment
- Enrolled (PECOS I20060227000051); may accept Medicare assignment
- Medical or professional school
- Medical College Of Georgia School Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 10635 Park RD Ste I
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley Ahearn, PA-CPhysician Assistant1861947780
- Larry Berman, MDInternal Medicine Physician1508869835
- Gregory Busse, DOInternal Medicine Physician1740257328
- David Colon, MDInternal Medicine Physician1447406079
- Dalena Custer, PA-CPhysician Assistant1184706806
- Mary Dore, PA-CPhysician Assistant1942220207
Verify Catherine Brittain Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 200101316Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,744 Medicare Part D claims for 704 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 124 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium508 claims
- Levothyroxine Sodium450 claims
- Atorvastatin Calcium399 claims
- Amlodipine Besylate242 claims
- Pantoprazole Sodium200 claims
- Omeprazole197 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $651.93
34 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Comprehab, IncGastonia, NC
- The Weston Group IncCharlotte, NC
- Tryon Medical Partners, PLLCCharlotte, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
536 internal medicine physician records list a practice address in Charlotte
They are 536 of the 23,603 NPPES records with a practice address in Charlotte, and 4,056 internal medicine physician records in North Carolina.
All 536 in Charlotte → All 4,056 in North Carolina → Every provider in Charlotte →
Other internal medicine physician records in North Carolina
- Ana Abaroa-Salvatierra, M.D.Pollocksville, NC1598101750
- Naa Deisa Abbey, MDShelby, NC1467899294
- Stephen Abbott, D.O.Sanford, NC1013216282
- Rami Abdo, MDDurham, NC1184693160
- Farhath Abdul Kareem, MDCary, NC1679687347
- Firas Abdulmajeed, M.D.Winston Salem, NC1427358043
- Erlinda Abella, MDSalisbury, NC1649251505
- Bisrat AberaFayetteville, NC1871453886
- David Abernathy, M. D.Morganton, NC1265497366
- Maroun Aboutayeh, D.O.Asheville, NC1447757992
Common questions
What is Catherine Brittain Callahan, MD's NPI number?
Catherine Brittain Callahan, MD's National Provider Identifier (NPI) is 1407870926, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Brittain Callahan, MD located?
The NPPES record lists a practice address at 10635 Park RD Ste I, Charlotte, NC, 28210. Phone: (704) 495-6334. Providers update this record themselves, so call before visiting.
How can I verify Catherine Brittain Callahan, MD's license?
NPPES lists North Carolina license number 200101316, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Catherine Brittain Callahan, MD prescribe under Medicare Part D?
In 2024, Catherine Brittain Callahan, MD had 7,744 Medicare Part D claims for 704 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.