Mary Callahan, P.A.
NPI 1841632304 · Medical Physician Assistant · Stuart, FL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Callahan, P.A. is a Medical Physician Assistant provider in Stuart, FL (NPI 1841632304).
Provider details
- NPI number
- 1841632304
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Female
- Sole proprietor
- No
- License
- PA9107349 (FL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 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
1,768 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 | 655 | $110 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 337 | $9 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 211 | $14 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 189 | $111 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 157 | $78 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 126 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 455 | 153 |
| Amlodipine Besylate | 386 | 137 |
| Losartan Potassium | 352 | 120 |
| Levothyroxine Sodium | 321 | 100 |
| Lisinopril | 291 | 98 |
| Rosuvastatin Calcium | 257 | 88 |
| Hydrochlorothiazide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$582 across 18 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
- 2013-07-25
- Last updated
- 2026-02-25
- Certified
- 2026-02-25
Frequently asked questions
- What is Mary Callahan's NPI number?
- Mary Callahan's National Provider Identifier (NPI) is 1841632304, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Callahan's specialty?
- Mary Callahan is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Callahan located?
- Mary Callahan's practice location on file with NPPES is 973 Se Federal Hwy Ste 973b, Stuart, FL 34994-3702.
- What is Mary Callahan's phone number?
- The practice phone number listed in the NPPES registry for Mary Callahan is (772) 288-5897.
- Does Mary Callahan accept Medicare?
- Mary Callahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Callahan's NPI active?
- Yes — Mary Callahan's NPI (1841632304) is active in the NPPES registry as of the last update on 2026-02-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.