Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

David C. Olken, DO

Individual provider Internal Medicine Physician · NPI 1679655260

David C. Olken, DO practises Internal Medicine in Rochester, New Hampshire. Graduated from University of New England, College of Osteo Medicine in 1987, 39 years ago. Practices with Wentworth Douglass Physician Corporation, a 431-clinician group and accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
39
Trained at
University of New England, College of Osteo Medicine
Licensed in
NH
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

11 Whitehall Rd Hospitalist Service
Rochester, NH 03867-3226 Not confirmed with CMS for 10 years — call before visiting
Phone: (603) 330-7905
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 8512 (NH)

Record details

NPI number1679655260
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedOctober 20, 2006
Last updated in NPPESNovember 12, 2015

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF NEW ENGLAND, COLLEGE OF OSTEO MEDICINE
Graduated 1987 (39 years in practice)
Group practice Wentworth Douglass Physician Corporation — 431 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients164
Services billed 408 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Wentworth Douglass Physician Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 431 clinicians in the practice; 12 are shown here.

Other providers in Rochester