Michael Oltmann, MD
NPI 1871676403 · Internal Medicine Physician · Stuttgart, AR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Oltmann, MD is a Internal Medicine Physician provider in Stuttgart, AR (NPI 1871676403).
Provider details
- NPI number
- 1871676403
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- LL28005 (SC)
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 tenure33% of score
19 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 · 124 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 506 | 130 |
| Amlodipine Besylate | 391 | 94 |
| Gabapentin | 260 | 59 |
| Lisinopril | 234 | 52 |
| Losartan Potassium | 233 | 50 |
| Omeprazole | 191 | 50 |
| Furosemide | 171 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$149 across 8 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
- 2006-10-24
- Last updated
- 2014-05-13
Frequently asked questions
- What is Michael Oltmann's NPI number?
- Michael Oltmann's National Provider Identifier (NPI) is 1871676403, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Oltmann's specialty?
- Michael Oltmann is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Oltmann located?
- Michael Oltmann's practice location on file with NPPES is 1609 N Medical Dr, Stuttgart, AR 72160-3274.
- What is Michael Oltmann's phone number?
- The practice phone number listed in the NPPES registry for Michael Oltmann is (870) 673-7211.
- Does Michael Oltmann accept Medicare?
- Michael Oltmann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Oltmann's NPI active?
- Yes — Michael Oltmann's NPI (1871676403) is active in the NPPES registry as of the last update on 2014-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.