Nicholas Marks, M.D.
Obstetrics & Gynecology Physician · Littleton, NH
Nicholas Marks, M.D. is an obstetrics & gynecology physician with a practice address in Littleton, New Hampshire, and NPI 1669448650, issued on Feb 28, 2006. Check the license (New Hampshire 12267, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Nicholas Marks
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 12267 NH
Self-reported in NPPES; status is on the state search - Practice location
- 580 St. Johnsbury RD., Littleton, NH 03561
- Phone
- (603) 444-9371
- Enumerated
- Feb 28, 2006
- Record last updated
- Sep 3, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (603) 444-9075
- Medicaid IDs
- 80300008 NH
1010578 VT - Medicare enrollment
- Enrolled (PECOS I20040805001341); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1998
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 240 in New Hampshire → Look up another NPI →
Also registered at 580 St. Johnsbury RD.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jessica Jacobs, MDPediatrics Physician1164580726
- Patricia Kellogg, PA-CMedical Physician Assistant1598919847
- Emily Kelly, APRNObstetrics & Gynecology Nurse Practitioner1760706816
- Sunit Patel, M.D.Pediatrics Physician1629071220
- Kathleen Pearson, D.O.Family Medicine Physician1629159108
- Deane Rankin, MDOtolaryngology Physician1174555767
Verify Nicholas Marks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 12267Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average obstetrics & gynecology physician in 2024
203 Medicare Part D claims for 74 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Estradiol36 claims
- Megestrol Acetate13 claims
- Nitrofurantoin Mono-Macro12 claims
- Myrbetriq11 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
- Littleton Hospital AssociationLittleton, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas Marks among 240 obstetrics & gynecology physician records in New Hampshire
Nicholas Marks, M.D. is one of 240 obstetrics & gynecology physician records with a practice address in New Hampshire. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 18% of them.
- NPI issued2006 · 18% of these records are older, 45% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1998 · median 2006 among the 157 with a school on file
- Record last updated2014 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in New Hampshire
There are 240 obstetrics & gynecology physician records in New Hampshire.
All 240 in New Hampshire → Every provider in Littleton → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Scott Brody, M.D.Littleton, NH 035611164423760
- John Sauter, M.D.Littleton, NH 035611295732444
- Marianne Jackson, DOBerlin, NH 035701184626012
- Stephen Kull, MDBerlin, NH 035701437200565
- Bruce LastraBerlin, NH 035701265403794
- Krzysztof Plociennik, MDBerlin, NH 035701194817759
- Lars Nielson, MDLancaster, NH 035841740267848
- Morgan Jenkins, MDPeterborough, NH 034581568873354
Common questions
What is Nicholas Marks, M.D.'s NPI number?
Nicholas Marks, M.D.'s National Provider Identifier (NPI) is 1669448650, issued on Feb 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas Marks, M.D. located?
The NPPES record lists a practice address at 580 St. Johnsbury RD., Littleton, NH, 03561. Phone: (603) 444-9371. Providers update this record themselves, so call before visiting.
How can I verify Nicholas Marks, M.D.'s license?
NPPES lists New Hampshire license number 12267, 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 Nicholas Marks, M.D. prescribe under Medicare Part D?
In 2024, Nicholas Marks, M.D. had 203 Medicare Part D claims for 74 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.