Douglas F. Marks, M.D.
Rheumatology Physician · Manchester, NH
Douglas F. Marks, M.D. is a rheumatology physician with a practice address in Manchester, New Hampshire, and NPI 1013924240, issued on Aug 1, 2006. Check the license (New Hampshire 12110, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Douglas F. Marks
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 12110 NH
Self-reported in NPPES; status is on the state search - Practice location
- 87 Mcgregor St, Manchester, NH 03102
- Phone
- (603) 695-2500
- Enumerated
- Aug 1, 2006
- Record last updated
- Jul 20, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (603) 695-2647
- Medicaid IDs
- 30206364 NH
1013262 VT - Medicare enrollment
- Enrolled (PECOS I20061229000409); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 58 in New Hampshire → Look up another NPI →
Also registered at 87 Mcgregor St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Douglas F. Marks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 12110Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
40% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,192 Medicare Part D claims for 274 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Methotrexate291 claims
- Allopurinol171 claims
- Prednisone152 claims
- Hydroxychloroquine Sulfate133 claims
- Meloxicam69 claims
- Colchicine52 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.
Industry payments in 2024: $82.26
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Elliot Professional ServicesManchester, NH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Douglas F. Marks among 58 rheumatology physician records in New Hampshire
Douglas F. Marks, M.D. is one of 58 rheumatology physician records with a practice address in New Hampshire. 81% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 48% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2001 · median 2001 among the 39 with a school on file
- Record last updated2011 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in New Hampshire
There are 58 rheumatology physician records in New Hampshire.
All 58 in New Hampshire → Every provider in Manchester → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Nazli Conway, M.D.Manchester, NH 031021225254543
- John Yost, D.O.Manchester, NH 031021083635379
- Naureen Mirza, M.D.Manchester, NH 031011386690535
- Aparna Raju Padmaraju, M.DManchester, NH 031011245542026
- Irene Hou, MDManchester, NH 031041891724589
- Amy Jiang, M.D.Manchester, NH 031041376935478
- Aakanksha Khanna, MDManchester, NH 031041316443682
- Jenny Lin, MDManchester, NH 031041013145515
Common questions
What is Douglas F. Marks, M.D.'s NPI number?
Douglas F. Marks, M.D.'s National Provider Identifier (NPI) is 1013924240, issued on Aug 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas F. Marks, M.D. located?
The NPPES record lists a practice address at 87 Mcgregor St, Manchester, NH, 03102. Phone: (603) 695-2500. Providers update this record themselves, so call before visiting.
How can I verify Douglas F. Marks, M.D.'s license?
NPPES lists New Hampshire license number 12110, 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 Douglas F. Marks, M.D. prescribe under Medicare Part D?
In 2024, Douglas F. Marks, M.D. had 1,192 Medicare Part D claims for 274 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.