James Maher, M.D.
NPI 1013963180 · Geriatric Medicine (Internal Medicine) Physician · Marshall, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Maher, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Marshall, MI (NPI 1013963180).
Provider details
- NPI number
- 1013963180
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 4301035339 (MI)
Specialties & taxonomies
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
34 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) |
|---|---|---|
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 34 | $115 |
Typical Medicare-allowed amounts for these services range $115–$115 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Levothyroxine Sodium | 42 |
| Atorvastatin Calcium | 36 |
| Pantoprazole Sodium | 31 |
| Carvedilol | 30 |
| Prednisone | 30 |
| Sertraline Hcl | 28 |
| Donepezil Hcl | 27 |
| Amlodipine Besylate | 25 |
| Bumetanide | 24 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-26
- Last updated
- 2014-12-05
Frequently asked questions
- What is James Maher's NPI number?
- James Maher's National Provider Identifier (NPI) is 1013963180, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Maher's specialty?
- James Maher is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is James Maher located?
- James Maher's practice location on file with NPPES is 720 US Highway 27 N, Marshall, MI 49068-9609.
- What is James Maher's phone number?
- The practice phone number listed in the NPPES registry for James Maher is (269) 781-6600.
- Does James Maher accept Medicare?
- James Maher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Maher's NPI active?
- Yes — James Maher's NPI (1013963180) is active in the NPPES registry as of the last update on 2014-12-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.