Kathryn Callahan, M.D.
NPI 1346396694 · Geriatric Medicine (Internal Medicine) Physician · Winston Salem, NC
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Callahan, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Winston Salem, NC (NPI 1346396694).
Provider details
- NPI number
- 1346396694
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 2010-00931 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
43 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 26 | $91 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 17 | $135 |
Typical Medicare-allowed amounts for these services range $91–$135 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 31 | — |
| Atorvastatin Calcium | 31 | — |
| Losartan Potassium | 31 | 11 |
| Rosuvastatin Calcium | 21 | — |
| Apixabanbrand: Eliquis | 19 | — |
| Amlodipine Besylate | 16 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$197 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-26
- Last updated
- 2010-10-08
Frequently asked questions
- What is Kathryn Callahan's NPI number?
- Kathryn Callahan's National Provider Identifier (NPI) is 1346396694, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Callahan's specialty?
- Kathryn Callahan is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Kathryn Callahan located?
- Kathryn Callahan's practice location on file with NPPES is Medical Center Blvd, Winston Salem, NC 27157-0001.
- What is Kathryn Callahan's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Callahan is (336) 716-2255.
- Does Kathryn Callahan accept Medicare?
- Kathryn Callahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Callahan's NPI active?
- Yes — Kathryn Callahan's NPI (1346396694) is active in the NPPES registry as of the last update on 2010-10-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.