Doctor profile · Federal record
Dr. Margaret Halloran, NP
Nurse Practitioner · Women's Health Nurse Practitioner · Ann Arbor, MI
- NPI 1497220131
- Accepts Medicare
- 8 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1500 E Medical Center Dr
Ann Arbor, MI 481095000
(734) 936-4000 - Additional location
-
1501 Lansdowne Ave Ste 208
Darby, PA 190231333
(610) 237-7922
fax (610) 237-3617 - Mailing address
-
3621 S State St
Ann Arbor, MI 481081633
Credentials & registration
- NPI registered
- October 2018 — 8 yrs on file
- Profile last updated
- February 25, 2025
- Year of graduation
- 2018 — 8 yrs since
- Specialty taxonomy
- 363L00000X — NUCC code
- State licenses (2)
- Michigan #4704336944 · Pennsylvania #SP019394
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1497220131. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
92
Distinct HCPCS
4
Medicare allowed
$4,888
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0101 |
Cervical or vaginal cancer screening; pelvic and clinical breast examination | 43 | 43 | $35 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 23 | 20 | $80 | |
87210 |
Smear for infectious agents | 13 | 11 | $6 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 13 | 13 | $113 |
In context: peer comparison
Among 105 peers in Ann Arbor Nurse Practitioner, average services per provider: 57. This provider delivers 1.6× the peer median.Open Payments
Industry payments received
All-time total
$178
Transactions
8
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Exeltis, USA INC. | 4 | $86.54 | |
| Astellas Pharma US INC | 3 | $66.09 | |
| Exact Sciences Corporation | 1 | $25.33 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
103
Patients
42
Total drug cost
$12,112
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Clotrimazole-Betamethasone (Clotrimazole/Betamethasone Dip) | Brand | 17 | 16 | $401 |
| Premarin (Estrogens, Conjugated) | Brand | 17 | 0 | $8,080 |
| Estradiol | Generic | 15 | 0 | $1,813 |
| Valacyclovir (Valacyclovir Hcl) | Brand | 15 | 0 | $993 |
| Fluconazole | Generic | 14 | 13 | $60 |
| Metronidazole | Generic | 14 | 13 | $275 |
| Medroxyprogesterone Acetate | Generic | 11 | 0 | $488 |
Hospital affiliations
Frequently asked questions
What is Dr. Margaret Halloran's medical specialty?
Dr. Margaret Halloran practices Nurse Practitioner in Ann Arbor, MI.
Where does Dr. Margaret Halloran practice?
Dr. Margaret Halloran practices at 1500 E Medical Center Dr, Ann Arbor, MI 481095000. Office phone: 7349364000.
What is Dr. Margaret Halloran's NPI?
Dr. Margaret Halloran's National Provider Identifier (NPI) is 1497220131, issued by NPPES.
Does Dr. Margaret Halloran accept Medicare assignment?
Yes. Dr. Margaret Halloran accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaret Halloran commonly perform?
Top Medicare-reported procedures in 2023: Cervical or vaginal cancer screening; pelvic and clinical breast examination (HCPCS G0101); Established patient office or other outpatient visit (HCPCS 99213); Smear for infectious agents (HCPCS 87210). Source: CMS Medicare Physician & Other Practitioners file.