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Edit this profileWhere to find Mark J. Walker, FNP-C
- Boston location main office
75 Francis St, Boston, MA 02115 - Lawrence location
1 General St, Lawrence, MA 01841
About Mark Walker
Mark J. Walker, FNP-C is a nurse practitioner based in Boston, MA. Mark is also listed as specializing in registered nurse and nurse practitioner — family. According to Medicare claims data, Mark cared for 354 Medicare patients across 393 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more and established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more. The provider's National Provider Identifier (NPI) is 1003330028.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (617) 732-5000
- Email not available
Practice Locations
75 FRANCIS ST
Boston, MA 02115
1 General St
Lawrence, MA 01841
Procedures Most Often Billed to Medicare
393 services · 354 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
242 | More often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
151 | More than most peers in Nurse Practitioner |
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 nurse practitioners at this location 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 23 related providers in 3 groups
Other nurse practitioners in Boston 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2017 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Mark J. Walker?
Mark J. Walker is a nurse practitioner in Boston, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Mark J. Walker's address?
Mark J. Walker is listed at 75 Francis St, Boston, MA 02115. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mark J. Walker?
The number on file is (617) 732-5000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark J. Walker's NPI number?
Mark J. Walker's National Provider Identifier is 1003330028. 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
Where did Mark J. Walker train?
Mark J. Walker attended Other, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark J. Walker been practicing?
Mark J. Walker has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mark J. Walker perform?
According to Medicare billing data, Mark J. Walker 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 Mark J. Walker confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark J. Walker. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.