Zahirul Haque, MD
NPI 1578536546 · Internal Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zahirul Haque, MD is a Internal Medicine Physician provider in Saint Louis, MO (NPI 1578536546).
Provider details
- NPI number
- 1578536546
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2001008540 (MO)
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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,800 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 1,477 | $75 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 1,193 | $113 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 431 | $102 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 252 | $165 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 112 | $47 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 54 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 114 | 58 |
| Gabapentin | 96 | 48 |
| Atorvastatin Calcium | 87 | 43 |
| Pantoprazole Sodium | 76 | 44 |
| Furosemide | 75 | 35 |
| Lisinopril | 69 | 31 |
| Levothyroxine Sodium | 47 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (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 (1)
- 1201 S Grand BlvdSaint Louis, MO 63104-1016Phone: (314) 617-2000
Registry dates
- Enumerated
- 2006-02-09
- Last updated
- 2025-04-01
- Certified
- 2025-04-01
Frequently asked questions
- What is Zahirul Haque's NPI number?
- Zahirul Haque's National Provider Identifier (NPI) is 1578536546, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zahirul Haque's specialty?
- Zahirul Haque is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Zahirul Haque located?
- Zahirul Haque's practice location on file with NPPES is 4 Clayton Court Dr, Saint Louis, MO 63131-2524.
- What is Zahirul Haque's phone number?
- The practice phone number listed in the NPPES registry for Zahirul Haque is (314) 368-3422.
- Does Zahirul Haque accept Medicare?
- Zahirul Haque is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zahirul Haque's NPI active?
- Yes — Zahirul Haque's NPI (1578536546) is active in the NPPES registry as of the last update on 2025-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.