Mark Mahoney, M.D.
NPI 1427028554 · Family Medicine Physician · Mason City, IA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Mahoney, M.D. is a Family Medicine Physician provider in Mason City, IA (NPI 1427028554).
Provider details
- NPI number
- 1427028554
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 24900 (IA)
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
787 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 | 248 | $119 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 165 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 117 | $84 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 59 | $120 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 55 | $17 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 52 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 86 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 196 | 49 |
| Metformin Hclbrand: Metformin Hcl Er | 119 | 28 |
| Pantoprazole Sodium | 108 | 35 |
| Famotidine | 102 | 28 |
| Escitalopram Oxalate | 99 | 18 |
| Levothyroxine Sodium | 99 | 23 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$776 across 47 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
- 2006-01-23
- Last updated
- 2021-03-30
- Certified
- 2021-03-30
Frequently asked questions
- What is Mark Mahoney's NPI number?
- Mark Mahoney's National Provider Identifier (NPI) is 1427028554, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Mahoney's specialty?
- Mark Mahoney is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Mahoney located?
- Mark Mahoney's practice location on file with NPPES is 2800 4th St Sw, Mason City, IA 50401-1596.
- What is Mark Mahoney's phone number?
- The practice phone number listed in the NPPES registry for Mark Mahoney is (641) 424-0000.
- Does Mark Mahoney accept Medicare?
- Mark Mahoney is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Mahoney's NPI active?
- Yes — Mark Mahoney's NPI (1427028554) is active in the NPPES registry as of the last update on 2021-03-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.