Michael Mcnamara, D.O.
NPI 1801860440 · General Practice Physician · Lewiston, MI
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Mcnamara, D.O. is a General Practice Physician provider in Lewiston, MI (NPI 1801860440).
Provider details
- NPI number
- 1801860440
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 1801860440 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 110 | 45 |
| Omeprazole | 94 | 41 |
| Amlodipine Besylate | 87 | 41 |
| Levothyroxine Sodium | 69 | 23 |
| Metoprolol Succinate | 64 | 29 |
| Losartan Potassium | 60 | 29 |
| Tamsulosin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 across 1 record (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
- 2006-02-13
- Last updated
- 2014-05-07
Frequently asked questions
- What is Michael Mcnamara's NPI number?
- Michael Mcnamara's National Provider Identifier (NPI) is 1801860440, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Mcnamara's specialty?
- Michael Mcnamara is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Mcnamara located?
- Michael Mcnamara's practice location on file with NPPES is 3040 Bourn St, Lewiston, MI 49756-8134.
- What is Michael Mcnamara's phone number?
- The practice phone number listed in the NPPES registry for Michael Mcnamara is (989) 786-4877.
- Does Michael Mcnamara accept Medicare?
- Michael Mcnamara is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Mcnamara's NPI active?
- Yes — Michael Mcnamara's NPI (1801860440) is active in the NPPES registry as of the last update on 2014-05-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.