Lyle Onstad, MD
NPI 1639105968 · Family Medicine Physician · Great Falls, MT
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lyle Onstad, MD is a Family Medicine Physician provider in Great Falls, MT (NPI 1639105968).
Provider details
- NPI number
- 1639105968
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- MT9538 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,587 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 399 | $89 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 344 | $126 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 169 | $19 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 157 | $127 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 155 | $19 |
| Advance Care Planning, First 30 Minutes99497 | 147 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 101 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 464 | 128 |
| Amlodipine Besylate | 259 | 61 |
| Losartan Potassium | 251 | 64 |
| Lisinopril | 231 | 55 |
| Tamsulosin Hcl | 224 | 54 |
| Pantoprazole Sodium | 211 | 53 |
| Meloxicam | 187 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$923 across 51 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-26
- Last updated
- 2012-05-22
Frequently asked questions
- What is Lyle Onstad's NPI number?
- Lyle Onstad's National Provider Identifier (NPI) is 1639105968, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lyle Onstad's specialty?
- Lyle Onstad is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Lyle Onstad located?
- Lyle Onstad's practice location on file with NPPES is 401 15th Avenue South, Suite 201, Great Falls, MT 59405-4396.
- What is Lyle Onstad's phone number?
- The practice phone number listed in the NPPES registry for Lyle Onstad is (406) 727-2121.
- Does Lyle Onstad accept Medicare?
- Lyle Onstad is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lyle Onstad's NPI active?
- Yes — Lyle Onstad's NPI (1639105968) is active in the NPPES registry as of the last update on 2012-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.