Gregory Mcmahon, D.O.
NPI 1295116218 · Urology Physician · Wynnewood, PA
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Mcmahon, D.O. is a Urology Physician provider in Wynnewood, PA (NPI 1295116218).
Provider details
- NPI number
- 1295116218
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,341 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) |
|---|---|---|
| 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 | 824 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 764 | $138 |
| Automated Urinalysis Test81003 | 672 | $2 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 164 | $68 |
| Ultrasound Scan of Pelvic Region Through Rectum76872 | 107 | $34 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 653 | 222 |
| Relugolixbrand: Orgovyx | 276 | 37 |
| Finasteride | 176 | 58 |
| Apalutamidebrand: Erleada | 155 | 19 |
| Abiraterone Acetate | 94 | 16 |
| Enzalutamidebrand: Xtandi | 80 | 12 |
| Prednisone | 75 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18,449 across 121 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
Additional practice locations (1)
- 100 E Lancaster AveWynnewood, PA 19096-3450Phone: (610) 649-6420
Registry dates
- Enumerated
- 2015-06-16
- Last updated
- 2023-01-16
- Certified
- 2023-01-16
Frequently asked questions
- What is Gregory Mcmahon's NPI number?
- Gregory Mcmahon's National Provider Identifier (NPI) is 1295116218, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Mcmahon's specialty?
- Gregory Mcmahon is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Gregory Mcmahon located?
- Gregory Mcmahon's practice location on file with NPPES is 100 E Lancaster Ave, Wynnewood, PA 19096-3450.
- What is Gregory Mcmahon's phone number?
- The practice phone number listed in the NPPES registry for Gregory Mcmahon is (610) 649-6420.
- Does Gregory Mcmahon accept Medicare?
- Gregory Mcmahon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Mcmahon's NPI active?
- Yes — Gregory Mcmahon's NPI (1295116218) is active in the NPPES registry as of the last update on 2023-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.