Douglas F. Marks, M.D. practises rheumatology in Manchester, NH. Douglas is a 2001 graduate of University of Massachusetts Medical School.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Dr. Marks is a rheumatology in Manchester, NH. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “RHEUMATOLOGY”.
NPI registry
Dr. Marks is listed at 87 MCGREGOR ST STE 4100, Manchester, NH 03102. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (603) 695-2500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Marks's National Provider Identifier is 1013924240. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Marks attended University of Massachusetts Medical School, graduating in 2001. This comes from the CMS National Downloadable File.
CMS public data
Dr. Marks has 25 years experience. Calculated from a graduation year of 2001, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Marks the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Marks. If this is you, claiming it is free.
Guide.md
Source: NPPES NPI Registry
87 MCGREGOR ST STE 4100
Manchester, NH 03102
1,380 services · 791 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
613 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
558 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
91 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
76 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
42 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Same specialty, same street address — most likely the same department or group.
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Same specialty, same city.
Other providers in the same specialty who trained at the same institution.
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.