Doctor profile · Federal record

Dr. Margaret Hammersla, CRNP

Adult Health Nurse Practitioner · Adult Health Nurse Practitioner · Bozeman, MT

  • NPI 1235157439
  • 20 yrs on file
  • Licensed in 2 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
937 Highland Blvd Ste 5410
Bozeman, MT 597156916
(406) 414-2400
Additional location
710 Obrecht RD
Sykesville, MD 217847650
(410) 795-8808
Mailing address
915 Highland Blvd
Bozeman, MT 597156902

Credentials & registration

NPPES · NUCC
NPI registered
July 2006 — 20 yrs on file
Profile last updated
April 9, 2025
Specialty taxonomy
363LA2200X — NUCC code
State licenses (2)
Montana #159783 · Maryland #R128313

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1235157439. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
40
Distinct HCPCS
1
Medicare allowed
$3,154
HCPCS Description Services Patients Avg allowed
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 40 34 $79

In context: peer comparison

Among 1 peers in Bozeman Adult Health Nurse Practitioner, average services per provider: 40. This provider delivers 1.0× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$20
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Abbvie INC. 1 $20.13

By nature of payment

Food and Beverage
$20

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
67
Patients
0
Total drug cost
$1,204
Drug Type Claims Patients Total cost
Lisinopril Generic 22 0 $229
Levothyroxine Sodium Generic 19 0 $219
Meloxicam Generic 13 0 $88
Mirtazapine Generic 13 0 $667

Frequently asked questions

Auto-generated from federal data
What is Dr. Margaret Hammersla's medical specialty?
Dr. Margaret Hammersla practices Adult Health Nurse Practitioner in Bozeman, MT.
Where does Dr. Margaret Hammersla practice?
Dr. Margaret Hammersla practices at 937 Highland Blvd Ste 5410, Bozeman, MT 597156916. Office phone: 4064142400.
What is Dr. Margaret Hammersla's NPI?
Dr. Margaret Hammersla's National Provider Identifier (NPI) is 1235157439, issued by NPPES.
What procedures does Dr. Margaret Hammersla commonly perform?
Top Medicare-reported procedures in 2023: Residence visit for established patient with moderate level of medical decision making (HCPCS 99349). Source: CMS Medicare Physician & Other Practitioners file.