Michael Ollendieck, MD
NPI 1235104126 · Internal Medicine Physician · Nashua, NH
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Ollendieck, MD is a Internal Medicine Physician provider in Nashua, NH (NPI 1235104126).
Provider details
- NPI number
- 1235104126
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 11457 (NH)
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
1,010 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 271 | $131 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 267 | $93 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 233 | $135 |
| Hemoglobin A1c Level83036 | 77 | $10 |
| Administration of Influenza Virus VaccineG0008 | 44 | $32 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 26 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 105 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 835 | 236 |
| Amlodipine Besylate | 455 | 127 |
| Lisinopril | 334 | 101 |
| Rosuvastatin Calcium | 224 | 71 |
| Metoprolol Succinate | 222 | 63 |
| Levothyroxine Sodium | 198 | 52 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-22
- Last updated
- 2019-05-02
Frequently asked questions
- What is Michael Ollendieck's NPI number?
- Michael Ollendieck's National Provider Identifier (NPI) is 1235104126, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Ollendieck's specialty?
- Michael Ollendieck is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Ollendieck located?
- Michael Ollendieck's practice location on file with NPPES is 5 Dow Jones Ave, Nashua, NH 03062-3089.
- What is Michael Ollendieck's phone number?
- The practice phone number listed in the NPPES registry for Michael Ollendieck is (603) 889-3667.
- Does Michael Ollendieck accept Medicare?
- Michael Ollendieck is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Ollendieck's NPI active?
- Yes — Michael Ollendieck's NPI (1235104126) is active in the NPPES registry as of the last update on 2019-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.