Horng-Chyi Lai, MD
NPI 1528385598 · Rheumatology Physician · Gillette, WY
Provider details
- NPI number
- 1528385598
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MED-PHYS-LIC41445 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
7 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,056 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) |
|---|---|---|
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 546 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 525 | $126 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 511 | $126 |
| Administration of Chemotherapy Into Vein, Each Additional Hour96415 | 375 | $27 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 274 | $61 |
| Insertion of Needle Into Vein for Collection of Blood Sample |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$83,034 across 235 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
Additional practice locations (6)
- 100 Brookshire BlvdBldg 2 Unit 1Billings, MT 59102-6751Phone: (406) 702-1327Fax: (406) 206-0105
- 100 Brookshire Blvd Bldg 2Billings, MT 59102-6751Phone: (406) 272-0100Fax: (406) 206-0105
- 1400 29th St S Ste 220Great Falls, MT 59405-5315Phone: (406) 350-4600Fax: (406) 794-0555
- 1400 29th St S Ste 218Great Falls, MT 59405-5315Phone: (406) 384-7002Fax: (406) 794-0555
- 2600 Winne Ave Ste D1Helena, MT 59601-4900Phone: (406) 534-0004Fax: (406) 391-7087
- 2600 Winne Ave Ste DHelena, MT 59601-4900Phone: (406) 206-6015Fax: (406) 389-8940
Registry dates
- Enumerated
- 2010-04-29
- Last updated
- 2025-03-19
- Certified
- 2025-03-19
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.