Doctor profile · Federal record
Dr. Mark Walker, FNP-C
Family Nurse Practitioner (CMS: Nurse Practitioner) · Registered Nurse · Boston, MA
- NPI 1003330028
- Accepts Medicare
- 9 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
75 Francis St
Boston, MA 021156110
(617) 732-5000 - Additional location
-
1 General St
Lawrence, MA 018412961
(978) 683-4000
Credentials & registration
- NPI registered
- August 2017 — 9 yrs on file
- Profile last updated
- July 25, 2023
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 363LF0000X — NUCC code
- State license (1)
- Massachusetts #RN279876
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1003330028. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
75
Distinct HCPCS
2
Medicare allowed
$8,565
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 47 | 46 | $130 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 28 | 26 | $88 |
In context: peer comparison
Among 119 peers in this city , average services per provider: 98. This provider delivers 0.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
15
Patients
12
Total drug cost
$338
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Metoprolol Succinate | Generic | 15 | 12 | $338 |
Hospital affiliations
Frequently asked questions
What is Dr. Mark Walker's medical specialty?
Dr. Mark Walker practices Family Nurse Practitioner in Boston, MA.
Where does Dr. Mark Walker practice?
Dr. Mark Walker practices at 75 Francis St, Boston, MA 021156110. Office phone: 6177325000.
What is Dr. Mark Walker's NPI?
Dr. Mark Walker's National Provider Identifier (NPI) is 1003330028, issued by NPPES.
Does Dr. Mark Walker accept Medicare assignment?
Yes. Dr. Mark Walker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Walker commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.