Marion Mc Mahon, M.D.
NPI 1073592556 · Endocrinology, Diabetes & Metabolism Physician · Rochester, MN
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marion Mc Mahon, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Rochester, MN (NPI 1073592556).
Provider details
- NPI number
- 1073592556
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 28418 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
268 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 148 | $78 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 69 | $48 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 51 | $128 |
Typical Medicare-allowed amounts for these services range $48–$128 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-12
- Last updated
- 2025-02-10
- Certified
- 2025-02-10
Frequently asked questions
- What is Marion Mc Mahon's NPI number?
- Marion Mc Mahon's National Provider Identifier (NPI) is 1073592556, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marion Mc Mahon's specialty?
- Marion Mc Mahon is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Marion Mc Mahon located?
- Marion Mc Mahon's practice location on file with NPPES is 200 1st St Sw, Rochester, MN 55905-0001.
- What is Marion Mc Mahon's phone number?
- The practice phone number listed in the NPPES registry for Marion Mc Mahon is (507) 284-2511.
- Does Marion Mc Mahon accept Medicare?
- Marion Mc Mahon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marion Mc Mahon's NPI active?
- Yes — Marion Mc Mahon's NPI (1073592556) is active in the NPPES registry as of the last update on 2025-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.