Doctor profile · Federal record
Dr. Matilda Mason, M.D
Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Student in an Organized Health Care Education/Training Program · Hackettstown, NJ
- NPI 1205141959
- Accepts Medicare
- 24 yrs in practice
- Licensed in 2 states
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
651 Willow Grove St
Hackettstown, NJ 078401799
(908) 441-1161
fax (973) 383-4572
Credentials & registration
- NPI registered
- August 2010 — 16 yrs on file
- Profile last updated
- July 18, 2025
- Year of graduation
- 2002 — 24 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- New Jersey #25MA09712200 · New York #268687
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1205141959. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
348
Distinct HCPCS
3
Medicare allowed
$60,630
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 238 | 226 | $186 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 99 | 97 | $140 | |
99291 |
Critical care, first 30-74 minutes | 11 | 11 | $228 |
In context: peer comparison
Among 13 peers in Hackettstown Internal Medicine Physician, average services per provider: 137. This provider delivers 2.5× the peer median.Frequently asked questions
What is Dr. Matilda Mason's medical specialty?
Dr. Matilda Mason practices Internal Medicine Physician in Hackettstown, NJ.
Where does Dr. Matilda Mason practice?
Dr. Matilda Mason practices at 651 Willow Grove St, Hackettstown, NJ 078401799. Office phone: 9084411161.
What is Dr. Matilda Mason's NPI?
Dr. Matilda Mason's National Provider Identifier (NPI) is 1205141959, issued by NPPES.
Does Dr. Matilda Mason accept Medicare assignment?
Yes. Dr. Matilda Mason accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Matilda Mason commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with moderate level of medical decision making (HCPCS 99223); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.