Randall Lengeling, M.D.
NPI 1912976861 · Gastroenterology Physician · Dubuque, IA
Randall Lengeling, M.D. is a Gastroenterology Physician provider in Dubuque, IA (NPI 1912976861).
Provider details
- NPI number
- 1912976861
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 21418 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
12 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 12 | $5 |
Typical Medicare-allowed amounts for these services range $5–$5 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 556 | 245 |
| Sucralfate | 128 | 63 |
| Pantoprazole Sodium | 98 | 43 |
| Sulfasalazine | 18 | — |
| Mesalamine | 16 | — |
| Azathioprine | 13 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-03-14
- Last updated
- 2021-04-06
- Certified
- 2021-04-06
Frequently asked questions
- What is Randall Lengeling's NPI number?
- Randall Lengeling's National Provider Identifier (NPI) is 1912976861, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Randall Lengeling's specialty?
- Randall Lengeling is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Randall Lengeling located?
- Randall Lengeling's practice location on file with NPPES is 1515 Delhi St, Dubuque, IA 52001-6320.
- What is Randall Lengeling's phone number?
- The practice phone number listed in the NPPES registry for Randall Lengeling is (563) 557-9111.
- Is Randall Lengeling's NPI active?
- Yes — Randall Lengeling's NPI (1912976861) is active in the NPPES registry as of the last update on 2021-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.