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

Nicholas Marks, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1669448650

Nicholas Marks, MD practises Obstetrics/Gynecology in Littleton, New Hampshire. Graduated from University of Minnesota Medical School in 1998, 28 years ago. Practices with Littleton Hospital Association, a 110-clinician group and accepts Medicare assignment. Licensed in New Hampshire.

Years since qualifying
28
Trained at
University of Minnesota Medical School
Licensed in
NH
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

580 St Johnsbury Rd
Littleton, NH 03561 Not confirmed with CMS for 12 years — call before visiting
Phone: (603) 444-9371
Fax: (603) 444-9075
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 12267 (NH)

Record details

NPI number1669448650
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 28, 2006
Last updated in NPPESSeptember 3, 2014

Medicare enrollment

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

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated 1998 (28 years in practice)
Group practice Littleton Hospital Association — 110 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of the uterus 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Littleton Regional Healthcare Hospital · Littleton, NH

Colleagues at Littleton Hospital Association

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 110 clinicians in the practice; 12 are shown here.

Other providers in Littleton