Physician Profile
James R. Mattson, MD
Unclaimed ProfileAbout Dr. Mattson
Based in New York, NY, James R. Mattson, MD is listed in the NPI registry under student in an organized health care education program. According to Medicare claims data, James cared for 34 Medicare patients across 34 services. The services billed most often include initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes and initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (550) 263-5506
- Email not available
Practice Locations
550 1ST AVE
New York, NY 10016
Procedures Most Often Billed to Medicare
34 services · 34 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
20 |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
14 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other medical trainees at this location 8
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Common questions
What kind of doctor is Dr. Mattson?
Dr. Mattson is a medical trainee in New York, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Student in an Organized Health Care Education Program”.
NPI registry
What is Dr. Mattson's address?
Dr. Mattson is listed at 550 1St Ave, New York, NY 10016. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Mattson?
The number on file is (550) 263-5506. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Mattson's NPI number?
Dr. Mattson's National Provider Identifier is 1659908234. 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
How long has Dr. Mattson been practicing?
Dr. Mattson has 6+ years experience. Registered with an NPI since 2020. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.
NPI registry
What procedures does Dr. Mattson perform?
According to Medicare billing data, Dr. Mattson 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
Has Dr. Mattson confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Mattson. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.