Omar Nadhem, M.D.
NPI 1598022725 · Gastroenterology Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Omar Nadhem, M.D. is a Gastroenterology Physician provider in Phoenix, AZ (NPI 1598022725).
Provider details
- NPI number
- 1598022725
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 0116030678 (VA)
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
14 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
847 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 144 | $162 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 108 | $235 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 97 | $125 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 77 | $94 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 72 | $126 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 505 | 176 |
| Omeprazole | 249 | 77 |
| Linaclotidebrand: Linzess | 232 | 58 |
| Famotidine | 190 | 56 |
| Esomeprazole Magnesium | 105 | 21 |
| Dicyclomine Hcl | 56 | 36 |
| Amitriptyline Hcl | 47 | 15 |
| Furosemide |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-04-12
- Last updated
- 2021-07-29
- Certified
- 2021-07-29
Frequently asked questions
- What is Omar Nadhem's NPI number?
- Omar Nadhem's National Provider Identifier (NPI) is 1598022725, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Omar Nadhem's specialty?
- Omar Nadhem is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Omar Nadhem located?
- Omar Nadhem's practice location on file with NPPES is 2901 North Central Avenue, Phoenix, AZ 85012.
- What is Omar Nadhem's phone number?
- The practice phone number listed in the NPPES registry for Omar Nadhem is (918) 502-1900.
- Does Omar Nadhem accept Medicare?
- Omar Nadhem is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Omar Nadhem's NPI active?
- Yes — Omar Nadhem's NPI (1598022725) is active in the NPPES registry as of the last update on 2021-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.