Dr. Nicholas R. Marks, MD
- Medicare services, 2016
- 101
- Part D claims, 2024
- 203
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 600 St Johnsbury Road, Littleton, NH 03561
- Practice phone
- Call (603) 444-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Marks' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Nicholas R. Marks is an OB-GYN in Littleton, New Hampshire
Dr. Marks practices at Littleton Regional Healthcare in Littleton, New Hampshire, part of Dartmouth-Hitchcock Health.
Dr. Marks' NPI, 1669448650, was assigned on February 28, 2006. Dr. Marks graduated from University of Minnesota Medical School in 1998. Dr. Marks holds New Hampshire license 12267.
- NPI
- 1669448650NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2961473400
- NPI enumeration date
- February 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (603) 444-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nicholas R. Marks practices at Littleton Regional Healthcare in Littleton, New Hampshire
Dr. Marks' primary practice is Littleton Regional Healthcare, at 600 St Johnsbury Road, Littleton, NH 03561 in Grafton County. The practice phone is (603) 444-9000.
- Littleton Regional Healthcare600 St Johnsbury Road, Littleton, NH 03561 · Grafton CountyPhone(603) 444-9000
Source: Dmand AI Affiliation Data
Dr. Nicholas R. Marks is affiliated with 2 sites of care and 1 medical group
Dr. Marks' primary practice is Littleton Regional Healthcare in Littleton, New Hampshire, part of Dartmouth-Hitchcock Health. The medical group on file is Littleton Regional Healthcare. Dmand AI also links Dr. Marks to 1 more rural health clinic, named with a free account. Dr. Marks' employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nicholas R. Marks' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marks practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Littleton Regional Healthcare | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nicholas R. Marks is one of 182 OB-GYNs in New Hampshire
Obstetrics and gynecology is Dr. Marks' primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Marks is licensed in New Hampshire.
Specialties and state licenses
- Obstetrics and gynecology, New HampshirePrimary
OB-GYNs near Dr. Marks
Counts of OB-GYNs with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Nicholas R. Marks billed Medicare for 101 services in 2016
CMS data shows 101 Medicare services from Dr. Marks across 3 procedure codes in 2016, all of them office visits. Medicare paid $3,733 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Marks compared with the New Hampshire median for OB-GYNs, 2016
- Dr. Marks
- New Hampshire median
- Medicare services
- 101vs 7436% above
- Part D claims
- 72vs 4176% above
Medians across 180 OB-GYNs in New Hampshire with Dmand AI profiles that report each measure.
Dr. Marks' most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Marks and other OB-GYNs in New Hampshire.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nicholas R. Marks' patients have a median age of 52
Across all payers, Dmand AI patient panel data puts Dr. Marks' median patient age at 52, with 100% women.
Dr. Marks' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Nicholas R. Marks wrote 203 Medicare Part D claims in 2024
In 2024, Dr. Marks wrote 203 Medicare Part D claims for 74 patients. 77% of them were for generic drugs. CMS names the drug for 72 of them, across 4 drugs with 11 or more claims each, at $16,652 in total drug cost. In 2023, CMS named 56 claims across 3 drugs.
Dr. Marks' Part D claims by kind of drug, 2024
- Generic157 claims77%
- Brand-name46 claims23%
Dr. Marks' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Marks' Part D claims, 2024
- Antibiotics9%19 of 203 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 562024: 7229%
Drugs named by CMS: 4 in 2024, 3 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Nicholas R. Marks takes part in Medicare
Dr. Marks accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Nicholas R. Marks graduated from University of Minnesota Medical School
Dr. Marks graduated from University of Minnesota Medical School in 1998.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nicholas R. Marks's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Nicholas R. Marks
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Nicholas R. Marks' NPI number?
Dr. Nicholas R. Marks' NPI number is 1669448650. It was assigned on February 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nicholas R. Marks?
Dr. Nicholas R. Marks is an OB-GYN in Littleton, New Hampshire. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Nicholas R. Marks practice?
Dr. Marks practices at 600 St Johnsbury Road, Littleton, NH 03561. Dr. Marks' primary practice is Littleton Regional Healthcare in Littleton, New Hampshire, part of Dartmouth-Hitchcock Health. Dmand AI also links Dr. Marks to 1 rural health clinic.
What is Dr. Nicholas R. Marks' office phone number?
The practice phone on file for Dr. Marks is (603) 444-9000.
What is Dr. Nicholas R. Marks' medical license number?
Dr. Marks holds New Hampshire license 12267.
Which hospitals is Dr. Nicholas R. Marks affiliated with?
Dr. Marks practices at Littleton Regional Healthcare in Littleton, New Hampshire.
What medical group is Dr. Nicholas R. Marks part of?
Dr. Marks is linked to Littleton Regional Healthcare.
Does Dr. Nicholas R. Marks accept Medicare?
Yes. CMS data shows Dr. Marks billed Medicare for 101 services in 2016, and Dr. Marks accepts Medicare assignment.
What services does Dr. Nicholas R. Marks bill to Medicare?
In 2016, Dr. Marks' most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99203).
Where did Dr. Nicholas R. Marks go to medical school?
Dr. Marks graduated from University of Minnesota Medical School in 1998.
What drugs does Dr. Nicholas R. Marks prescribe most?
In 2024 Medicare Part D data, Dr. Marks' most prescribed drugs by claims were Estradiol, Megestrol Acetate and Nitrofurantoin Mono-Macro.
How long has Dr. Nicholas R. Marks been practicing?
Dr. Marks graduated from medical school in 1998, 28 years ago.
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