Donald Mcmahon, MD
NPI 1679555718 · Family Medicine Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Mcmahon, MD is a Family Medicine Physician provider in Indianapolis, IN (NPI 1679555718).
Provider details
- NPI number
- 1679555718
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 01045365A (IN)
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
20 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
481 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 | 189 | $118 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 105 | $119 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 94 | $17 |
| Administration of Influenza Virus VaccineG0008 | 23 | $30 |
| Administration of Pneumococcal VaccineG0009 | 22 | $30 |
| Hemoglobin A1c Level83036 | 18 | $10 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 130 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 339 | 109 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 266 | 43 |
| Amlodipine Besylate | 250 | 79 |
| Lisinopril | 217 | 75 |
| Rosuvastatin Calcium | 207 | 61 |
| Omeprazole | 166 | 55 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$32 across 2 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
- 2005-11-15
- Last updated
- 2023-07-20
- Certified
- 2023-07-20
Frequently asked questions
- What is Donald Mcmahon's NPI number?
- Donald Mcmahon's National Provider Identifier (NPI) is 1679555718, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Mcmahon's specialty?
- Donald Mcmahon is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Mcmahon located?
- Donald Mcmahon's practice location on file with NPPES is 426 S Alabama St Ste 100, Indianapolis, IN 46225-3301.
- What is Donald Mcmahon's phone number?
- The practice phone number listed in the NPPES registry for Donald Mcmahon is (317) 528-2489.
- Does Donald Mcmahon accept Medicare?
- Donald Mcmahon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Mcmahon's NPI active?
- Yes — Donald Mcmahon's NPI (1679555718) is active in the NPPES registry as of the last update on 2023-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.