Doctor profile · Federal record
Dr. Mary Gray, FNP
Family Nurse Practitioner (CMS: Nurse Practitioner) · Great Falls, MT
- NPI 1184625055
- Accepts Medicare
- MIPS 80.5 / 100 · 2023
- 38 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1401 25Th St S
Great Falls, MT 594055183
(406) 731-8888
fax (406) 731-8876
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- March 27, 2026
- Year of graduation
- 1988 — 38 yrs since
- Specialty taxonomy
- 363LF0000X — NUCC code
- State license (1)
- Montana #100012
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1184625055. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
798
Distinct HCPCS
10
Medicare allowed
$57,922
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99308 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 202 | 68 | $63 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 172 | 77 | $56 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 105 | 65 | $81 | |
99307 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes | 73 | 44 | $34 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 71 | 71 | $110 | |
99308 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 64 | 30 | $63 | |
99310 |
Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 51 | 45 | $130 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 25 | 19 | $109 | |
99306 |
Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes | 18 | 18 | $155 | |
99307 |
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes | 17 | 14 | $34 |
In context: peer comparison
Among 20 peers in Great Falls Family Nurse Practitioner, average services per provider: 68. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$69
Transactions
4
Manufacturers
3
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Astellas Pharma US INC | 2 | $32.11 | |
| GlaxoSmithKline, LLC. | 1 | $23.20 | |
| Novo Nordisk INC | 1 | $13.51 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,633
Patients
416
Total drug cost
$35,787
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 192 | 62 | $3,309 |
| Tramadol Hcl | Generic | 171 | 36 | $1,364 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 128 | 29 | $3,012 |
| Fentanyl | Generic | 124 | 20 | $13,696 |
| Atorvastatin Calcium | Generic | 122 | 33 | $1,562 |
| Gabapentin | Generic | 121 | 33 | $2,264 |
| Simvastatin | Generic | 117 | 31 | $1,089 |
| Lisinopril | Generic | 94 | 29 | $573 |
| Amlodipine Besylate | Generic | 92 | 31 | $716 |
| Bupropion Xl (Bupropion Hcl) | Brand | 89 | 14 | $1,958 |
Hospital affiliations
Frequently asked questions
What is Dr. Mary Gray's medical specialty?
Dr. Mary Gray practices Family Nurse Practitioner in Great Falls, MT.
Where does Dr. Mary Gray practice?
Dr. Mary Gray practices at 1401 25Th St S, Great Falls, MT 594055183. Office phone: 4067318888.
What is Dr. Mary Gray's NPI?
Dr. Mary Gray's National Provider Identifier (NPI) is 1184625055, issued by NPPES.
Does Dr. Mary Gray accept Medicare assignment?
Yes. Dr. Mary Gray accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mary Gray commonly perform?
Top Medicare-reported procedures in 2023: Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99308); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.