Brian Lahmann, M.D.
NPI 1346381837 · Surgery Physician · New Lenox, IL
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Lahmann, M.D. is a Surgery Physician provider in New Lenox, IL (NPI 1346381837).
Provider details
- NPI number
- 1346381837
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036111197 (IL)
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
19 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
908 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 590 | $126 |
| Single Contrast X-Ray of Upper Digestive Tract74240 | 133 | $117 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 56 | $24 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 34 | $168 |
| Other Procedure on Stomach43999 | 31 | $128 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 90 | 29 |
| Semaglutidebrand: Ozempic | 44 | 12 |
| Topiramate | 34 | — |
| Famotidine | 34 | 14 |
| Tirzepatidebrand: Mounjaro | 33 | — |
| Ondansetronbrand: Ondansetron Odt | 32 | 17 |
| Sucralfate | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$618 across 7 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
- 2007-02-09
- Last updated
- 2022-01-21
- Certified
- 2022-01-21
Frequently asked questions
- What is Brian Lahmann's NPI number?
- Brian Lahmann's National Provider Identifier (NPI) is 1346381837, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Lahmann's specialty?
- Brian Lahmann is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Lahmann located?
- Brian Lahmann's practice location on file with NPPES is 1890 Silver Cross Blvd, New Lenox, IL 60451-9524.
- What is Brian Lahmann's phone number?
- The practice phone number listed in the NPPES registry for Brian Lahmann is (815) 717-8744.
- Does Brian Lahmann accept Medicare?
- Brian Lahmann is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Lahmann's NPI active?
- Yes — Brian Lahmann's NPI (1346381837) is active in the NPPES registry as of the last update on 2022-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.