Douglas Adler, MD
NPI 1255313367 · Gastroenterology Physician · Glenview, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Adler, MD is a Gastroenterology Physician provider in Glenview, IL (NPI 1255313367).
Provider details
- NPI number
- 1255313367
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036060472 (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
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
526 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 | 173 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 66 | $94 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 65 | $191 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 59 | $106 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 52 | $161 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 170 | 56 |
| Omeprazole | 122 | 37 |
| Famotidine | 57 | 20 |
| Mesalamine | 36 | — |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 30 | 29 |
| Sodium Chloride/Nahco3/Kcl/Pegbrand: Peg 3350-Electrolyte | 26 | 26 |
| Sod Sulf/Pot Chloride/Mag Sulfbrand: Sutab |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,339 across 57 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
- 2005-11-15
- Last updated
- 2017-04-24
Frequently asked questions
- What is Douglas Adler's NPI number?
- Douglas Adler's National Provider Identifier (NPI) is 1255313367, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Adler's specialty?
- Douglas Adler is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Adler located?
- Douglas Adler's practice location on file with NPPES is 2501 Compass Rd, Glenview, IL 60026-8000.
- What is Douglas Adler's phone number?
- The practice phone number listed in the NPPES registry for Douglas Adler is (847) 677-1170.
- Does Douglas Adler accept Medicare?
- Douglas Adler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Adler's NPI active?
- Yes — Douglas Adler's NPI (1255313367) is active in the NPPES registry as of the last update on 2017-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.