NPPES file of Aug 9, 2026

Michael Charles Ollendieck, MD

Internal Medicine Physician · Nashua, NH

Michael Charles Ollendieck, MD is an internal medicine physician with a practice address in Nashua, New Hampshire, and NPI 1235104126, issued on Feb 22, 2006. Check the license (New Hampshire 11457, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1235104126
Name
Michael Charles Ollendieck
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
11457 NH
Self-reported in NPPES; status is on the state search
Practice location
5 Dow Jones Ave, Nashua, NH 03062
Phone
(603) 889-3667
Enumerated
Feb 22, 2006
Record last updated
May 2, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicaid ID
0150461 MA
Medicare enrollment
Enrolled (PECOS I20170922001665); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5 Dow Jones Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Celine Fortin, NPFamily Nurse Practitioner1932209517
  2. Carol Hordis, APRNAdult Health Nurse Practitioner1407944473
  3. Carrie Illg, MSN, APRN, FNP-BCFamily Nurse Practitioner1356908073
  4. Matthew Libman, D.O.Internal Medicine Physician1609263276
  5. Peter Lundquist, MDInternal Medicine Physician1497794036
  6. Naomi Mawn, APRNFamily Nurse Practitioner1154055358

Verify Michael Charles Ollendieck in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Hampshire Board of Medicine
    Search for license 11457
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New Hampshire license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.2 times the Medicare Part D claims of the average internal medicine physician in 2024

6,921 Medicare Part D claims for 582 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 177 claims were for opioids.

  1. Michael Ollendieck6,921
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium835 claims
  2. Amlodipine Besylate455 claims
  3. Lisinopril334 claims
  4. Rosuvastatin Calcium224 claims
  5. Metoprolol Succinate222 claims
  6. Levothyroxine Sodium198 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Foundation Medical Partners IncNashua, NH

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

75 internal medicine physician records list a practice address in Nashua

They are 75 of the 3,140 NPPES records with a practice address in Nashua, and 673 internal medicine physician records in New Hampshire.

Other internal medicine physician records in New Hampshire

  1. Lauren Abbott, MDPortsmouth, NH1619597234
  2. Moaz AbdelrehimManchester, NH1962064790
  3. Champa Abeysinghe, M.D.New London, NH1629257134
  4. Munder Abuaisha, MDManchester, NH1265926406
  5. Indira AcharyaLebanon, NH1407428600
  6. Lisa Adams, MDLebanon, NH1912225186
  7. Ogechi Agogbuo, MDNew London, NH1265007595
  8. Anardi Agosto, M.D.Keene, NH1487090700
  9. Asma Ahmed, MDNashua, NH1972788073
  10. Annie Airey, DOLaconia, NH1487395141

Common questions

What is Michael Charles Ollendieck, MD's NPI number?

Michael Charles Ollendieck, MD's National Provider Identifier (NPI) is 1235104126, issued on Feb 22, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Michael Charles Ollendieck, MD located?

The NPPES record lists a practice address at 5 Dow Jones Ave, Nashua, NH, 03062. Phone: (603) 889-3667. Providers update this record themselves, so call before visiting.

How can I verify Michael Charles Ollendieck, MD's license?

NPPES lists New Hampshire license number 11457, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Michael Charles Ollendieck, MD prescribe under Medicare Part D?

In 2024, Michael Charles Ollendieck, MD had 6,921 Medicare Part D claims for 582 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.