Doctor profile · Federal record
Dr. Mary Brennan, APRN-BC
Acute Care Nurse Practitioner (CMS: Nurse Practitioner) · Acute Care Nurse Practitioner · Hospitalist Physician · Portland, ME
- NPI 1699782623
- Accepts Medicare
- MIPS 93.1 / 100 · 2023
- 25 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
10 Andover RD
Portland, ME 041021954
(207) 761-6642 - Additional location
-
333 Borthwick Ave
Portsmouth, NH 038017128
(603) 334-2039
fax (603) 433-5180
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- December 21, 2021
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 363LA2100X — NUCC code
- State licenses (2)
- Maine #CNP211468 · New Hampshire #047934-23
- Medicaid (2)
- ME #432951999 · NH #30347119
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1699782623. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
13
Distinct HCPCS
1
Medicare allowed
$381
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 13 | 11 | $29 |
In context: peer comparison
Among 8 peers in Portland Acute Care Nurse Practitioner, average services per provider: 67. This provider delivers 0.2× the peer median.Open Payments
Industry payments received
All-time total
$55
Transactions
2
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 2 | $54.97 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
12
Patients
0
Total drug cost
$43
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone Hcl | Generic | 12 | 0 | $43 |
Hospital affiliations
Frequently asked questions
What is Dr. Mary Brennan's medical specialty?
Dr. Mary Brennan practices Acute Care Nurse Practitioner in Portland, ME.
Where does Dr. Mary Brennan practice?
Dr. Mary Brennan practices at 10 Andover RD, Portland, ME 041021954. Office phone: 2077616642.
What is Dr. Mary Brennan's NPI?
Dr. Mary Brennan's National Provider Identifier (NPI) is 1699782623, issued by NPPES.
Does Dr. Mary Brennan accept Medicare assignment?
Yes. Dr. Mary Brennan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Brennan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99212). Source: CMS Medicare Physician & Other Practitioners file.